Ive always had a fast walking speed and found it incredibly tiring to walk at the pace of other people.

@themonkeyman2547

3 ай бұрын

My knees start feeling funny if I walk too slow

@notcorrect

3 ай бұрын

People always complain that I walk too fast. If I try to walk at their pace I feel sluggish, awkward and its exhausting. They always think I'm exaggerating..

@petebyrdie4799

3 ай бұрын

@themonkeyman2547 My hip joints ache. I've slowed down a bit because of parkinsons but I still walk faster than most, and find myself thinking, 'How do you people ever get anywhere?'

@petebyrdie4799

3 ай бұрын

@notcorrect Exactly! I'm pleased The Action Lab supports my claim that walking more slowly than your natural pace is difficult.

@prumchhangsreng979

3 ай бұрын

Im a fast walker as well but i feel like u are being over dramatic about it. I just found the movement of slow walking to be awkward, that’s all Edited: oh i see u have Parkinson as well. I just thought u were the average fast walker.

There’s actually a big trend in the hiking community for lighter shoes; it’s commonly shared that each pound on your feet uses the same energy as 3 pounds carried. So 10lb of moonwalkers burns the energy of carrying 30lb. I’d rather just walk faster lol

@austinpullan8725

3 ай бұрын

With nothing else changing, it seems like the most efficient way to do it if nothing else changes, is to strap the battery and control portion to a waist strap so it isn’t on your feet.

@threestans9096

3 ай бұрын

ive never heard this, ive been hiking since i was 7. people cut their toothbrush in half to save grams in their pack, but never have I heard such a relationship from foot to pack. How many people are using shoes that weigh that much? Plus the equation itself doesnt pan out in my eyes. you saying me walking around with one pound shoes is the same as a backpack of 30lbs? So if i take my shoes off and carry a 30lb backpack it will feel like im walking with shoes on? Not even over 30miles a day, i dont see that making sense. Ive worn 5lb weights around the house and they dint feel like 150lbs. And yes I understand its cumulative calories burned.

@ugh55

3 ай бұрын

@@threestans9096 What is easier, walking around with 20lb backpack or walking around with two 10 lb weights in your hands. You are constantly moving/lifting your hands/feet whereas the backpack stays in place. It takes more energy to lift something over and over than it is to lift it once.

@jmunt

3 ай бұрын

@@threestans9096 you misread my comment. I said 3:1 not 30:1. I equated 10lb moonwalkers to 30lb on the back. Lookup ultralight hiking shoes, they are gaining popularity for this reason, they are often 1-2lb lighter than traditional hiking boots

@jmunt

3 ай бұрын

@@threestans9096 I also said “trend”. You said you were hiking since you were 7. That explains why you haven’t heard it, this is a new “trend”, not old conventional wisdom that anyone was doing when you were 7. I only know about it because I very recently became interested in hiking and did a lot of research about it, and everywhere I looked I saw articles talking about how inefficient traditional hiking boots are and how important lighter trail shoes are (weather permitting).

Please don't advertise BetterHelp who sell your data to advertisers and let anyone in their "professional" roster without verification

@JunkieRemix

5 күн бұрын

Yeah, I’ve heard a lot of bad stories of the so called “therapists” not even doing what they’re supposed to do and sometimes even giving up. One person had to go through like 5 or 6 different people to find a decent therapist that actually helped

When I was still hiking, sometimes multi-day hikes (longest one was eight days crossing the Sierra Nevada) we put a lot of thought into optimizing the gear we had to carry with us. One of the best lessons I learned was that for every lb of weight of your boots you would do as much work as carrying 5lb in your backpack. I never questioned the accuracy of the numbers, or why it should work out like that, but seeing this video, and the bio-mechanics explanation, it became obvious: the weight in your backpack hardly goes up and down at all when you are walking. I guess that is just a long-winded way of saying: how much could you increase the efficiency of these moonwalkers by putting the battery and the control electronics in a pack that could be carried in a hip pack leaving only wheels, motors and some sensors to be carried on the feet?

@robertparkinson2102

3 ай бұрын

The weight in your pack should also be as high as possible as your hips accelerate slightly more (forward and back & up and down) with each step than your head.

@stevethorpe

3 ай бұрын

​​@@robertparkinson2102True. I wrote "hip pack" as it just seemed more convenient considering it would have to be connected by wires to the shoes, and would still give a large bio-mechanical advantage. Not sure why I'm still following up on this though, as I'm firmly in the "This is a goofy idea that will never catch on." camp 😄

@richardcates8605

2 ай бұрын

Barefoot hiking ( or aqua shoes at most) for the win

The moonwalkers are solving a problem that nobody has and they make you look ridiculous doing it. I think this is the final nail in the coffin for them.

@AmnesiacSai

3 ай бұрын

they're noisy too and you have to charge your fucking shoes I'd rather just roller blade

@lasskinn474

3 ай бұрын

@@AmnesiacSai yeah detachable blade rollerblades are so much better than this.

@YounesLayachi

3 ай бұрын

Walking is a solved nonproblem for humans by definition, and certainly it's not a tech gadget that will make it any better. Special shoes or walking sticks maybe, but not this thing ! Bouncy shoes mostly compensate for the rock hard surfaces we've created everywhere we go. Also, it seems some people will do ANYTHING just to not have to walk. After cars and the abomination of those horizontal two wheel "hover" things , now electric wheeled shoes. They avoid walking as if it's a bad thing.

@airplanes_aren.t_real

3 ай бұрын

​@@lasskinn474they would probably make more money with a detachable roller blade that has hooks/holster on the side of the shoe for the wheels

@ShubhamBhushanCC

3 ай бұрын

Silicon Valley in a nutshell

As exercise scientist, I would say that more important than the total energy is the specific strain applied to certain muscles such as the hip flexors to elevate the foot! Depending on the person and the gait pattern, these shoes can be really cool or really strenuous

@HowDareYouu

3 ай бұрын

exercise scientist?? u mean trainer where do you guys come with all these job names. ''Architect of science of exercising user experience of movement physics''

@captainkirk7676

3 ай бұрын

​@HowDareYouu cooks now call themselves food scientist. Is the growing trend to add scientist or engineer to everything.

@ccelik97

3 ай бұрын

@@HowDareYouu Maybe like: _"Rindfleischetiketterungsüberwachungsaufgabenübertragungsgesets"_ *("beef law")* ? !\s

@TheSpongiform

3 ай бұрын

What are the qualifications of an exercise scientist?

@matthewjefferys1855

3 ай бұрын

​@@HowDareYouu A personal trainer does a course for a fortnight, an exercise scientist studies a Bachelor and/or Masters/PhD. Ask any adult about it, it's a common thing to study.

I'm excited for these kinds of shoes not because of everyday walking, but a solution to locomotion in VR. The idea is that the shoes bring you back to the center of the playspace while walking forward like a "reverse treadmill"

@itsd0nk

3 ай бұрын

Sounds like a great way to add even more motion sickness to the situation.

@reverendtoast4173

3 ай бұрын

@@itsd0nk sounds like a problem for people getting motion sick, sucks to be them

@UsDiYoNa

2 ай бұрын

@@itsd0nksounds like a great way to inevitably end up on your face or head butting the wall when the power goes out, or the battery dies, or the connection glitches, etc.

@spookykitty2327

2 ай бұрын

@@UsDiYoNa I'd love to be able to trip in VR. So immersive

@lancetschirhart7676

Ай бұрын

There’s rarely motion sickness in vr. This is a criticism from like ten years ago before the refresh rate was increased. Give it a try, you’ll see what I mean. @@itsd0nk

As someone who tends to walk really fast, I would love to have these. The idea of outpacing someone else that's running while just walking is hilarious to me.

@Supremax67

3 ай бұрын

OR, you need to use the washroom real bad!

Have you ever tried an upward incline using the moonwalk electric shoes?

@ehrichweiss

3 ай бұрын

I was thinking about that as well. I was thinking that downhill could just be a roller-skate mode or even regenerative braking mode but uphill is a different game entirely.

@brendanberry7403

3 ай бұрын

Almost sounded like they had a ratcheting system for just that so they wouldn’t roll backwards. How well they grip is another story.

@unvergebeneid

3 ай бұрын

E-bikes are a godsend especially on inclines. So depending on how these are implemented, that might actually be their killer feature idk.

@PrivateSi

3 ай бұрын

Or a downward incline with those kid's shoes with the wheel built in. Simples.

@paranoidandroid7459

3 ай бұрын

Or tried to get back up after falling

It sounds like the most efficient way to use these things would be to speed walk with them. You'd probably use less energy than running but achieve that speed!

@YounesLayachi

3 ай бұрын

Roller blades are effective because there's less need to lift the foot , they are pretty light and they greatly increase the distance of each "step" plus enable more aggressive pushing instead of mostly falling forwards. Although I haven't tried wearing them or ice skating blades for longer than a couple hours, aside from the funny missing foot feeling it doesn't seem to fatigue the legs much.

@Amor_fati.Memento_Mori

3 ай бұрын

But can't you just bring a booster board?

@_Just_Another_Guy

3 ай бұрын

​@@YounesLayachi Stairs.

@pinbi7

3 ай бұрын

@@_Just_Another_Guy i used to in-line skate , stairs are a non issue

@MsTatakai

3 ай бұрын

The only problem i see with In-line skates which i like a lot to use, is entering in a buildinng with them ON... if not all buidings don't let you go in with them ON and usually you shouldn't to not get into problems... and with these moonwalker they can't say "hey you can't walk in here!" like the other roller shoes which were pretty cool back in the day... ¯\_(ツ)_/¯ just saying tho

Thank God for people like you who focus and diligent about learning, improving and finding out how useful and good a product is or probably everything in life.

I like the concept, and the working product looks promising. As improvements i would say for sure make them lighter, maybe add a couple of different drive modes. Or keep them at current weight, but increase the speed gain to offset the curve. Added functionality could include a normal mode that works as it currently does, but a bit faster, like 150% gain, and a speed mode that boosts a skating motion by 100%, autodetect gait change or manually or by Bluetooth. Maybe a user menu to adjust how much boost you get per mode. Perhaps a coast function. There's so much room to make this a good product

Sponsored by Betterhelp - sharing your medical history so you don't have to !

@RAIS0KU

11 күн бұрын

I simply don't understand how KZreadrs still accept sponsorship from them. The bare minimum before accepting a sponsorship is to research them.

Why can't they just work as electric rollerskates ?

@randomcharacter6501

3 ай бұрын

Over designed

@DrewsReviews07

3 ай бұрын

Right like you only should have to step to get over an obstacle

@conor7154

3 ай бұрын

Probably way less efficient

@kalaasmna9116

3 ай бұрын

Because they dont want to create something that already existed

@dareokoski8158

3 ай бұрын

​@conor7154 electric roller skates do exist

But... skates exist...

@mr.pizzamarlon

4 күн бұрын

This is how Apple works. They make the world believes their innovative in creating things for the first time.

I'd be curious to see how you factor in wear and tear on various leg joints. Walking at twice your normal walking speed would seem to create more wear, but using the moonwalker shoes, you're actually taking less steps and this would seem to decrease wear on joints and other internal bio-mechanisms. If this can be proven through further calculations then the moonwalkers can be shown to increase energy consumption (not a bad thing necessarily, especially for folks wanting more of a workout or weight loss walking experience) and far less wear on a person's body! Also please do a video of walking with these on a moving walkway at the airport! How fast can you go???

It's not just the energy needed to lift them, but the added inertial to your legs that makes it harder to accelerate them and to slow them down as you move them forward and back. Additionally, you used five pound ankle weights as reference, but these moonwalkers sit under your foot, creating a larger moment of inertia. That makes the moonwalkers expend more energy than the five pound ankle weights.

@tatianaes3354

3 ай бұрын

I guess THE TRUE purpose of those shoes is for you to burn your calories faster while also walking faster. So it is a physical exercise for fitness. Not bad, because otherwise Americans will become even fatter.

@dwaneanderson8039

3 ай бұрын

But biomechanics makes this far more complicated than it seems. Walking is far more efficient than simple physics calculations suggest. You don't have to use much energy to swing your foot forward because your leg acts as a pendulum and swings forward naturally. You also don't use that much energy to lift your feet because you can lift them by shifting your weight to the other foot.

@SuperPhunThyme9

3 ай бұрын

hills make the difference ill bet.....especially the grueling downhills. those get me twice as fast as uphills.....all that strain on your hamstrings every single step

@user-oq3ix4xo6j

3 ай бұрын

didn't he calculate the added inertia? he did that using 1/2 mv^2 formulae

1:20 looks like he thought you were just going to walk away 😂

@tienatho2149

3 ай бұрын

I think he crossed the red line so the instructor just tell him to go back

We just love watching you explain these things, no matter how simple or complex they are.

im glad someone is here asking all the important questions

I love this channel, these examinations of different protects from an engineering perspective is really fascinating. I know you have a doctorate and could teacher but I think you reach way more people this way.

Great video! I like it more when you get a bit more technical than usual 👍

There is another layer of biomechanics that adds even further to the complexity though. The difference in stress from stronger slower motions and that of faster less strenuous motions, which depending on the person can make the shoes more or less optimal at the preferred walking speed.

I think they could achieve the same effect passively using ratcheting wheels to allow your motion to glide forward but, then the ratchets would catch when you put any reverse force on them. the forward motion already created by walking would provide the glide forward. Kinda like roller skates that would only allow the wheels to roll in one direction and maybe add drag adjustments to adjust the speed of the glide forward like a rod and reel.

@Jimbaloidatron

3 ай бұрын

I searched the comments for this; I figured I wouldn't be the first! They need a smooth enough surface anyhow.

@dm5rkt

3 ай бұрын

There exists such things already. They are used by cross country skiers for training on tarmac surfaces in the summer. Called rollerskis. They have ratcheting rear wheels. It is possible to go very fast just striding along without even using poles. Much faster than these electric shoes. Up or downhill too. Only downside is they have no brakes, but experienced skiers can brake by putting the skis into a V shape.

Move all possible components to the hip, like battery and controllers. Also make the back wheel grippy so the drop of the foot will slow down from friction instead of leg power

Bipedal walking takes very little energy because legs are pendulums. A lot of the energy that you calculated in accelerating your foot forward and decelerating your foot before putting it down is automatic. Most of the energy is going to be in lifting the foot and keeping it lifted for the duration of the pendulum swing.

You forget to factor in less friction (wheels) which can reduce the foot drag resistance force and some gravity while walking.

Hold on I think you missed something important. In your graph you slide along the X axis, but shouldn't you move along the Y axis also? If it takes you 250 Joules to walk a meter, and now the shoes let you walk 2 meters with that same motion, then you are really using 125 Joules per meter. Both axis are dependent on how many meters you move, and the shoes change that so both axis should change.

Hey @theactionlab Is this walking slower using more energy count for stairs too? I've always felt walking slowly up stairs to be way more tiring than just going up fast.

I think it's incredible that they created something that augments your walking speed while making it easy to learn. This product may not be a homerun, but the expertise they learned could be valuable. They may be able to create shoes that cancel out your movement, which could be useful in VR.

@blazingfury057

3 ай бұрын

The probelm with that is they would then be catering to a fickle market where theres a push to skip past. Apple, Sony, Xreal, Google, ect have already started working on AR glasses (I have the pre-rebrand Xreal company Nreal air personally) and are wanting to push for a true MR world. This is also why digital realestate that takes real geograohic space is also already a market. Imagine having a digital scratch card ad ar gas pumps, or to have Jesus adds above churches. Distasteful and gross as it sounds (and is) this is the future tech companies want where because your car will naturally give you a video game styled arrow on where you're driving on maps or give you trivia about the history of an area or when its safe to cross the street. In a world where you dont have a reason to leave the mixed reality many people will simply choose not to. Gaming has mostly dropped of VR for simialr reasons. We know that the limitations facing VR currently are far too expensive for an end user to realistically pay for a good experince causing the products available for the equipment you bought not to be very good. Sure I now have shoes to keep me in place, but they cost $200 with my $400 headset coming from my $500-3000 computer. Even if we just say its bundled with a powerful headset for $650 (way below standard loss for game consoles but for the argument) what company is going to make games that are both interactive and expansive enough for this mechanic to be of value at sucha high asking price. Perosnally i would enjoy it, but i also enjoy the sega32x and CD which are simialr in concept but also did not perform well for reasons that could easily be key word translated. Mr-next gen VR- currently being replaced gen The shoes- console add on

One small thing that i do sometimes when I'm walking, i try to position my feet on places that have a natural height difference, so my feet gets into an angle that kinda propells me forward just by me putting my weight on that feet, of course that mostly works on straight and downhill paths, but i wonder if that Moonwalker could have a similar use case for just rolling downhill and you just stand still and it moves without you taking a single step.

I've used these for around 6 months, and can definitely confirm they're best for time saving, not energy saving. I use them to make short connections in an airport terminal, and to navigate quickly at indoor conventions and events. If I know I'll be short on time and have the extra stamina, they're worth having in cases like those. Otherwise normal walking easily wins on efficiency.

Hope you enjoyed Las Vegas James!

Not that I'd actually use them but to make them more efficient they should consider a roller-skate mode which lets the wheels turn freely so that if you have a downhill portion you don't have to use nearly as much energy and as a matter of fact if it were steep enough you could add regenerative braking so you could descend safely and charge your batteries in the process.

@RalseiGaming

3 ай бұрын

I have tried them and please don’t get them they feel super cheap are really loud in person plus the wheel seem to destroy themselves

@Runoratsu

3 ай бұрын

Yeah, rollerskating in general is more energy efficient than walking, so it makes no sense for me those things wouldn’t let you do that.

@RalseiGaming

3 ай бұрын

@@Runoratsu I 100% agree with this plus these “shoes” are also 1200$ plus you can get second hand roller-skates that work great for way less and they are easier to handle

@Runoratsu

3 ай бұрын

@@RalseiGaming Just as an added data point: the fastest rollerskate marathon is under one hour, while the fastest “traditional” marathon time is just over two hours. And that is despite rollerskate marathoning being a lot less popular, so it’s likely the skating athlete setting the record isn’t as genetically favored and unbelievably trained as the other one; a quicker time would probably be possible. Since both will perform at 100% of their available energy, it stands to reason skating twice as fast must be _at least_ as efficient.

@stedel542

2 ай бұрын

What if you need to go uphill?

i wish that all the product be analyzed by someone like you who can give us nothing more than the truth thank you

Informative , interesting! Made me think about an angle I had not considered

It seems to me that the solution would be to put the weight of the batteries on a belt, as the inefficiency comes from carrying the weight on your feet. I do like the idea of using something like this for exercise. I’m curious how it would target muscles differently by taking deep steps while being propelled forward.

You could put the battery packs in a backpack and have much lighter shoes. Plus: you could use even more power to drive them, without increasing the weight. Accelerating the backpack is not an issue, as the forward movement is about a constant velocity.

@dennisquinn8558

3 ай бұрын

Exactly. Why are heavy batteries being constantly lifted and dropped by the feet? Why aren't they at the waist or higher?

@KILLRXNOEVIRUS

3 ай бұрын

​@@dennisquinn8558Yeah, the stupidity is baffling.

@johanalejandrocazadordepin7225

3 ай бұрын

​​@@dennisquinn8558 wiring

@Toalen

3 ай бұрын

it's not stupid, it's meant to be easy to wear. it already looks ridiculous enough, you don't want to add a dangling wire and a backpack or whatever to wear just to walk

@dennisquinn8558

3 ай бұрын

@@Toalen Believe it or not, when wires protrude from a shoulder-pack or back-belt-pack to the back of these shoe attachments, not everyone may be as concerned as you - when it means the wearer achieves a faster walking speed with no additional effort. Those who are concerned simply won't buy it.

There's also the issue that you're fighting against the acceleration of the shoes themselves when you push forward, which probably adds a bit to your energy expenditure as well.

I liked the explanation and graphs to visualize it easier. Thx you I learned something new. And I think I wouldn't wear the shoes until there is a benefit of at least 15-30% energy saving. Maybe if the shoes get better with the weight it could be used in manufacture buildings, so operators could fast arrive in different places. Especially when you move fast it is less consuming energy then if you move slower.

I don't necessarily see that as a bad thing. Often I want to get somewhere and am happy to spend effort doing so but don't want to jog. If this speeds me up and helps exercise my leg muscles without forcing me to jog (which I find unpleasant and more likely to make me sweat in my upper body because of the arm motions) that's a decent tradeoff. So I'd totally use them if I got a free pair. Not worth spending money for me though.

@kikixchannel

3 ай бұрын

Right. If they are used as a vehicle to get you to your destination faster rather than conserve energy, that's a 'value added' that doesn't really care about slightly less efficiency.

You could use them as an excercise device by having the wheels turn the opposite way from where you're walking. Then you have the 5 lb weights and it takes more steps to get where youre going

Ive always loved the people movers at the airport, where you can walk at normal speed but your actually cruising by pretty fast.

1:48 the preferred walking speed is, in my experience, one of the greatest factors for making friends

I’m not so sure it’s possible to feel “cool” while using those things 😂

Doctor - walk more Action lab - walk less

@user-eo2wl4ku5v

3 ай бұрын

walk less---(no) walk slowly consciously but the same distance (yes)

This seems like it would be a really cool way to make an instant treadmill, by counteracting your foreward momentum and keeping you in place. It could also see some really cool uses in the vr industry this way.

When I was in High School I had a math teacher who was extremely short and tiny. She was in the 4'??" range. One day my friends were noticing as we walked down the hall with her to a meeting that her legs and feet were moving at a pace about 2x the speed of ours, and she was leading the pace. It's true we all have a natural moving pace. I don't know if she re-trained herself to walk faster but we were all quite impressed with how she seemed to move like lightening. Scaled up, we couldn't keep up with her pace of leg movement for long. We really are all different.

They are like the airport conveyor belts!

@MADMAXX-7

3 ай бұрын

Using Moonwalkers ON airport conveyor belts. "Ludicrous speed!"

Fun video, but there's a big mistake with the way you're doing the graph analysis. When you increase the speed, you move the point to the left as a result, but you leave the vertical component without a change, this is wrong because if the total calorie expenditure is the same, and the speed increases, joules/meter would decrease. If you wanted to just move it horizontally, then the correct graph to do that on would be the joules/Min vs meters/Min. If the Y axis has joules/Meter, then increasing your speed has to decrease the joules/Meter. This makes the moonwalkers way more efficient than what this analysis shows.

My preferred walking speed changes when i am suffering from a joint flare up. When my ankles and elbows aren't inflamed, i walk a lot smoother and faster. Shin splints affect my speed too. I would not like the added weight of these shoes - when that changes, i would be interested.

I still love these & would use them! However! I would like them to turn it into an actual shoe as a fully put together piece instead of strapping it around my shoe. They could use cup joints that wrap around dimpled spheres that allow for it to use basic coils & air pressure (not much but it helps the total repulsive force of the coil to coil through a "wireless like" charging moment) to help a shock like system that still has attractive forces to move the spheres. Using an axle motor in the center with a 2 sodium ion pack and wrap around ankle + top sodium ion pack of batteries would be better to reduce the total weight cost of the design as well. The cup socket just needs to go over the sphere with a basic flexible brush like material to help it seal & be held in place. 4 spheres are easy enough because the coils and magnets of the sphere just need to be placed in a wiffle ball bat like sphere while being sintered together easily & cheaply. As a proof of concept its pretty nice, but the wheels will fail, replaceable components are annoying if not easily done and bought, and the battery size is annoying since its all place low and not a part of the foot. This hurts bio-mechanics, the weight is being re-accelerated twice, after placing the foot down there is a moment of re-acceleration because the relative view of one side of the body to the other and the transfer of force "shock wave" through the body needs to happen. Boiled down it means it should actually use a little more than twice the total energy because of one side trying to twist. Think of a sudden lack of grip on ice on one side of your body, the total number of muscle groups used quickly to try and balance, then you end up over correcting while trying to not fall. Its similar, but not the same. This time the lifting of the foot is twice as hard and requires more muscle groups to stay balanced, on top of trying to slow down as well. We use a forward to out (diagonal) approach of roller blades for a reason, the wheels become something that no longer roll. They most likely are using the same basic programming that those old segways & 2 wheeled fire bombs from china use to balanced and sense tilting movement to slow down and accelerate. which means there are no regenerative breaking moments, they have to use high polling rates which decrease efficiencies, and they aren't taking advantage of movement changes of our natural gaits to take advantage of the rotations of the wheels. I.E. the dimpled spheres increase the ability to rub internally to help break during stopping, but with a little bit of air trapped in to increase the smoothness of that. You can also unscrew, pop them out, slide something, whatever version you want and easily replace the wheels and clean out the cup. Same thing with reapplying tread on the wheels, change the magnets and coils, even further add axles to the wheels if you wanted to hold them in place in the cup while allowing for rotation and suspension if wanted. A central main big boy axial flux motor that uses a cvt like direct to those axles or a version of a roller direct contact means they have torque vectoring and a larger more efficient torque curve that uses less electricity and increases regenerative breaking potential all while being something that could be taken off by pushing a button and unlatching/sliding it off as a full piece to the shoe. Much easier to manufacture, easier to replace and bad or simply wore out until needed to be replaced parts, cheaper now while having it be more consistent for the weight around the foot making it outright nicer to wear overall and getting different styles to choose from. basically, great concept but it needs to be reworked so it takes less energy and make better power overall while also being easier to maintain and used. Still, like I wrote earlier, I would use them from the start though. Air Gear manga coming to life!

Video idea: hydrophobic suit in a pool (it would be interesting and cool)

We should probably also take into account the extra work certain muscles are doing to lift those heavy shoes, that otherwise wouldn’t get as much exercise during normal walking. It could be argued you might feel less tired after extended use of the shoes simply from building the specific muscles required to lift them over time.

@EffectualPoet

3 ай бұрын

He did...Did you even watch the video?

@brando3342

3 ай бұрын

@@EffectualPoet No, he addressed a separate point. Not this one specifically. He addressed the fact that holding dead weight with an engaged muscle expends energy, which is not the same point I am making.

The vertical axis of the graph is already in joule/METER/kg. When you double the speed to account for the assistance of the shoes, you should halve the energy/meter/kg because the the speed doubles but energy divided by time stays the same.

“If you’ve ever been out walking with friends” Ah, no wonder I didn’t understand it

I love it when actual math and research is done to irrefutably prove that something is utterly useless. Thank you!

Given that around 40% of adults are obese in the US, they should be thinking of ways to make people burn more calories rather than less. Maybe make them 20lbs each, and get rid of the motors?

Also you may need to consider that the additional height changes your center of balance which might increase energy needed to walk. Overall these seem silly to me, but who knows, maybe if they get super light and smaller wheels (lower to ground).

It would be interesting if they built in a roller skate/neutral function to allow rolling when it is preferred.

Another thing I think is worth considering here is based on personal preference. Do you prefer to move faster with less resistance or slower with more? Take bike gears for example. Some people prefer to rotate the pedals more on a lower gear where people like myself prefer the opposite. We might both be traveling at the same speed but the difference lies in how we prefer to use our muscles to get there. For people like myself I feel like these shoes would be great because they wouldn't feel as cumbersome to us. I'd much prefer to move the extra weight than have to move faster.

Would be interesting to see the same analysis for total energy required to walk a fixed distance. I tend to feel like it requires more energy to travel the same distance faster. Like I'll be more tired if I run a mile in 8 mins compared to walking it in 15.

I think it looks cool which justifies it. Maybe if they leaned into it and added responsive led with each step. And what would it do if you counter the foots movement? Would you fall? Could it keep you stationary or even go backwards? Might look cool.

6:14 "But wait a minute - the way i calculated the amount of energy [...] was based on just Newtonian equations of movement!" I have to admit I'm a bit disappointed here; I was really looking forward to seeing you calculate the relativistic contributions of 2x walking speed

These are the hard hitting stories I’m sitting at the helm of YT waiting for

This a a great debate about the physics and the opinions that come together in play

Awesome video dude!

Lucky you got to test them in a place that doesn't have upturned sidewalk slabs. Try this in the Boston area, and pretty soon you're going to trip on a sidewalk slab that your normal gait would walk right over. Also, I have a suspicion that not everybody's walking energy expenditure curve is the same shape apart from being displaced. I think mine has a much sharper upturn above optimal walking speed, and has some secondary valleys at speeds below optimal walking speed (possibly developed because of getting stuck behind slower walkers who insist on walking in parallel with each other; but if they are walking at a pace that doesn't match one of those secondary valleys, then I still end up having to waste energy).

Wonder if there's a way to use a spring to tension the wheels and the act of picking up your foot lifts a plunger that depresses when you step to keep the spring tensioned. Seems like a more weight/energy efficient way to do it. Could use a small batter and a brake to stop wheels when not walking. Wish I had the equipment to test it haha I'm so curious.

Whenever I see you in your videos, my mind always connects you with the guy who says "... but steel is heavier than feathers".

Is there a ratcheting function built into the wheels? Just wondering because it sounds like it's either ratcheting on your forward step or the gears on those things are going to be stripped really fast unless you're lifting your feet up and not shuffling them.

Now I get it! "Moonwalk shoes" because these shoes would only be efficient in lower gravity! Most of the energy walking goes towards fighting gravity instead of propelling you forward, but in low gravity you spend time bouncing back to get enough traction for the next step, obligating you to take longer slower strides. Moonwalk shoes, in low gravity, would provide you with extra weight on your feet giving you more traction and compensating for a longer slower stride with rotational motion, although, wheels with larger surface area may be needed.

This content is SO good. It’s so well researched, informed, and interesting! We really appreciate the work you put in, thank you!

The energy expendature makes total sense. It's the same thing with any muscle movement. Slower requires more effort because your muscles stay contracted for longer. That's why nobody on earth can do a pushup where the concentric and eccentric take one-two minutes each.

Great video. I'm curious if arm swing, heart rate, etc. are taken into account in the ankle weight assumptions. I would've liked to see an experiment to prove the paper analysis: walking at double the speed for 15 minutes and seeing if the outputs we're solving for (e.g. sweating, not really energy efficiency) are actually changed. Naively, I feel like walking at double normal speed vs walking normal speed with the boots for an extended period of time, you'd sweat more in the former. Would love to be proved wrong.

Now I want to know about energy consumption and replenishment rates of the body, as that would seem to be relevant to muscle fatigue, heart fatigue, sweat/cooling, and duration of walking. From what I know, I think it's best to walk at the optimal speed and then take breaks instead of slowing down

There's a device called the Free Aim VR shoes that seems to be this same concept in reverse. Instead of using motorized shoes to propel you they negate your forward motion to give you an infinite playspace in VR. Weight is the major hurdle for both, but I think Free Aim's application is a lot smarter than something you can achieve better with roller skates. The hardware looks nice, though.

Kinda cool you went to CES, hope to see more of your take on it

side note on preferred walking speeds: I don't think it's fair to say everyone just intuitively and naturally settles on their own most *energy* efficient walking speed. Anecdotally, most people I know (including myself until a few years ago) don't ever walk leisurely if we can avoid it. We tend to be in a hurry most of the time when walking, and think of it as a sort of chore or work-out that is inherently supposed to be tiring to do. In other words, there's an expectation that we must get where we're going as quickly as possible, and that we will probably have noticeably higher heart and respiration rates when we get there than we did when we left the house. As a result, almost nobody I know walks with intent to save their own energy; everyone's more concerned with saving time. I first really noticed this while walking around places on vacation with my mom: I kept having to ask her to slow down, even though she was the one breathing hard and I wasn't even breaking a sweat. She has much shorter legs than me but weighs about the same; if both our walking speeds were set based purely on energy efficiency, it should have been her asking me to slow down; the only reason it was the other way around is because I work from home and she works in a hospital.

I think it's a cool concept. I always wanted to make shoes with springs on the soles I have the intuition they would be more efficient than these shoes. Like those prosthetic legs used to run that are just a long curved metal spring. Maybe we could wear a pair of such prosthetics per leg and let our legs ride on them. EDIT: It's a whole thing called Powerbocking

They could help you in the sense that different muscles would be used. If you just walk faster then you will be putting all that extra force through your normal "pushing" muscle, however with the moonwalker different muscles would be used to generate that additional energy you calculated (ie your lifting up muscle) therefore the energy would be spread across more muscles so each muscle would get less tired (especially once your body had got used to the moonwalkers). This is kinda the same reason why people use walking poles to go up hill or cyclist are clipped into their pedals. Its all distributing that energy across more muscles

From the cost vs. speed relation, the optimum is c. 70 m/min. However, if you want to go faster, it'd be reasonable to do the cost comparison starting from a fast pace. The slope is increasing slightly at higher speed, so that could make the shoes more efficient, and you would be walking at running speed. There's a likely big jump in the cost offset when you change from walking to running, which would also make the shoes more efficient.

Not sure of this was already considered, but would there also be some additional energy needed to fight against the leading foot being propelled forward on the working shoe. In my mind while the leading foot is rolling forward under the shoes power while your body will be leaning in to counter this the foot being swung forward is doing so at a greater speed and against the accelerating lead foot. This whole thing gives me a headache.

the shoes might be useful in situations where u have to carry something that might spill or flip over. You can cover the distance with less steps, so there will be less room for mistakes.

now i understand a lot about why i get tired, i normally walk faster than most people around me,so ,me slowing down to walk along friends was making me more tired

If you reduce the weight by your normal shoe weight it changes the equation slightly. If they could re-make it to match the weight of a regular shoe then it would be negligable, and adds further distance to the same amount of force. But the odd thing is, that they could get a similar effect by making regular skates with minimal rolling distance.

After a quick google, I found a company that makes something like this except its significantly lighter and has infinite distance on a single 'charge'. Its a clip-on roller skate. Not electric, just wheels on bearings. I cannot see any situation where I'd want to use the moonwalker electric shoes over something like these clip-on roller skates.

ActionLabguy: 6:57 Newton: No way he called my physics basic

I hike 4 miles a day to/from work, at what I call my "roadmarch pace" after years in the Army. 15 minute miles adjusted for terrain. I just turn off the brain, lean into it, and let my boots take me where I want to go. Now in my 50's, the bones and muscles aren't quite as limber as they used to be, but I do it to save money and keep myself fit and I enjoy being in the woods every day for 30 minutes before dealing with people all day. Those shoes might be great in a place like California, but where I live in Colorado, snow and ice would make them a menace. The exoskeleton rigs in testing for the military seem to be far more efficient and safe as they take the load off the bones/muscles of the entire leg and back while keeping the tread and stability offered by good boots.

The major flaw that I see with this idea is that I hike in the woods a lot more than I walk on smooth pavement. Sometimes I have to walk through mud or climb over a fallen tree, but I don’t think these would ever work in a forest environment. Even if you’re someone who only walks around in cities it would still be impractical. One pebble and you’re done for, and they’re extremely loud to walk in so you end up looking and sounding like a clown. It just seems like a dystopian idea created by people who have never actually covered any real distance on their own feet.

That's excatly what I feel just watching videos of them. I like more the ones that work without foot movement, that you have a remote for (LTT/ShortCircuit made a video of them a month ago) RollWalk eRW3 They had some problems and learning curve, but seems still a better idea.

2:00 - That preferred walking rate thing being about how each individual has a specific natural walking speed that their body has found burns the least amount of energy, does not account for how this walking pace changes depending on the environment. People naturally walk faster in faster-paced environments, like in the city, or in a mall (depending on the vibes), and they walk slower when on a beach or some leisurely location/environment. Maybe those are just examples of deviation away from their optimal pace, though, I suppose. It's what they're relative to. Doesn't feel like a deviation from their preference though, it's just how fast they naturally go... they're not forcing themselves to slow down, or to speed up. So yea, the optimal energy expenditure thing doesn't cover this. Seemingly. So, the optimal energy walking pace being a thing, is true, but their walking pace preference being only due to that, is not accurate to say. Probably.

Energy consumption is one thing, but we generally aren't limited by energy when walking in the real world. The energy from a day of waking can be replenished with just a few snacks through the day, much less weight than the 10 pounds of shoes. Instead it's joint and muscle strain. I worked in a job in exploration where we spent 10 hours a day walking through dense bush and through steep hills/valleys. Our legs would be tired at the end, but the limiting factor to how far we could push ourselves wasn't the number of calories burned, it was our legs aching. The biggest thing is wearing lighter footwear, even minor changes to shoe weight can leave you done after just a few hours. I had to wear steel toes instead of my usual hiking books one day to use a rock saw on a sample and it was the most tired I've ever been. And that's still lighter than these.

Nice invention, I'm thinking how useful and comfortable it is. like climb stairs, or if it's comfortable enough to use for a long time. Can you use it in irregular terrain?

Someplace where you do a lot of walking, like security or warehouse. Even better if you have to take them off when you need to run and they autonomously find their way back to the starting point.

When walking normally the maintained momentum helps but slow down and the momentum gives little gains consuming more energy

Could you please do a video comparing regular rollerblading to natural walking?

I question the calculations for the energy used to walk 2x as fast as the normal walking speed. At 7mph instead of 3mph, I'm no longer walking but jogging or running which would use a different amount of energy than running. Not sure if that would be more or less energy used.

I wear steel toe boots for arch support, water resistance, and nonslip soles. Those weigh at least that much and with a few months' time, my legs became conditioned and the weight becomes effortless. I twisted an ankle very badly several years ago, so the boots also stabilize that. Since then, I can't take off running without injuring myself, so I walk fast for a few steps to gain momentum to throw my boots at running speed. Running isn't a problem, but taking off is. In my case, those shoes might be even less efficient for me.

1:20 dude thought you were about to walk off with the shoes and he started chasing you trying to play it off...😭😂😭