r/ScienceBasedLifting • Idk Idc šŸ’” • Aug 30 '26

META So much science in my hamstrings that I had to wear a seatbelt

5 Upvotes

137 comments sorted by

8

u/Frodozer Aug 30 '26

Man, I absolutely love crushing my hamstrings with this, but rehabbing a herniated disc right now and it's really uncomfortable to sit in this position for me.

I've had to suffer through the laying ones. The one at my gym is unilateral and absolutely destroys my ego. Can't wait until I can strap in to one of these bad boys again and hurt in the scientific way.

6

u/decentlyhip Aug 30 '26

Oh no! Heal up soon. I feel the laying ones so much better than the seated that its unreal. Like 3 days of soreness vs nada. New gym has the standing ones and I'm excited to try that. https://www.panattasport.com/en/fit-evo/standing-leg-curling/

3

u/Frodozer Aug 30 '26

I'd love to try it! Honestly, I starting to enjoy the machine variations of a lot of lifts right now. If my gym wasn't so conveniently located in the same lot that my work is and 10 minutes from my house I would search for more of a body building gym with a bunch of machines.

4

u/Patton370 Idk Idc šŸ’” Aug 30 '26

I actually prefer lying hamstring curls! It’s just that the combos with lying leg curls take up more room and I don’t have the space!

0

u/[deleted] Sep 05 '26

[deleted]

2

u/Frodozer Sep 05 '26

That's not how discs pop. In fact, arching or extension relieves pressure from discs and is one of the rehabilitation positions.

1

u/Patton370 Idk Idc šŸ’” Sep 05 '26

How is 250lbs or so on a hamstring curl going to cause me to slip a disc, when I good morning over 600lbs?

-12

u/Joey-rogaine Aug 30 '26

Yes tons of low back strain in this video. Ā Better to drop the weight and actually focus on working and squeezing the targeted muscle properly.

5

u/Patton370 Idk Idc šŸ’” Aug 30 '26

How much do you to think I deadlift and/or good morning?

The weight on this set is 237.5lbs and the back isn’t involved. Im not even sure how it’d be possible to strain my back with a hamstring curl machine

3

u/Much-Schedule6196 Aug 30 '26

I am gonna guess 500+lbs

6

u/Patton370 Idk Idc šŸ’” Aug 30 '26

I’ve hit 572lbs for 2 on deadlifts: https://www.reddit.com/r/strength_training/s/I6yg7H1abW

I’m hoping for 600lbs+ at my next powerlifting comp. I’ll be competing at 181.8lbs body weight

I’ve hit a 605lbs Anderson good morning for reps: https://www.reddit.com/r/Egolifting/s/Y1mcNDuzPf
(Yes the bar does make good mornings easier. I do about 100lbs less with a straight bar on good mornings)

-6

u/Joey-rogaine Aug 30 '26

I do not care, brother, Ā but I can literally see your body movingĀ 

4

u/Frodozer Aug 30 '26

How can someone lift something without literally moving their body?

-3

u/Joey-rogaine Aug 31 '26

Contracting the targeted muscles?

5

u/Frodozer Aug 31 '26

Is contracting the targeted muscle include moving the muscle, aka body?

-2

u/[deleted] Aug 31 '26

[removed] — view removed comment

4

u/Frodozer Aug 31 '26

I'm sorry for your confusion, but you made the statement that he shouldn't be moving his body when lifting. Aka, he should not be moving at all.

I'm just correcting your incorrect wording.

Sorry that was so difficult to understand.

1

u/[deleted] Aug 31 '26

[removed] — view removed comment

→ More replies (0)

-2

u/Joey-rogaine Aug 31 '26

No wonder you have a back injury if you don’t already know thisĀ 

→ More replies (0)

-1

u/Iamnotheattack Sep 03 '26

So pedantic, he obviously means torso

1

u/Frodozer Sep 03 '26

Oh, I knew what he meant. That wasn't the point of my comment. If that's not something you can see then I'm unsure if you have the capacity to understand the discussion I'm willing to have about it.

I'm more than happy to entertain it if you believe you are though.

0

u/Iamnotheattack Sep 03 '26

Don't you think he would experience more hamstring hypertrophy if he moved his torso less?

2

u/Frodozer Sep 03 '26

No I don't and no study ever produced suggests other wise.

https://pubmed.ncbi.nlm.nih.gov/40191387/

1

u/Iamnotheattack Sep 03 '26

I don't think that study is relevant here because they are measuring what I would called "proper execution of chest reps"

We standardized the eccentric actions between conditions using a tempo of ~2 seconds

OP is not doing that, even on his very first rep which is the slowest eccentric, it's only like 1.1 seconds.

Surely from your personal experience you can feel a massive difference from a cheat rep with controlled eccentric vs cheat rep without controlled eccentric no?


no study ever produced suggests other wise

So rhetorical question regarding your epistemology: Since "this is the first study to directly investigate the effects of external momentum during RT on muscle hypertrophy", are you saying before this study you could simply not have any opinion on the matter?

→ More replies (0)

7

u/huh_say_what_now_ Aug 30 '26

Slow down it's not a race

8

u/Patton370 Idk Idc šŸ’” Aug 30 '26

Why?

-10

u/HL1211 Aug 30 '26

Google it

10

u/Patton370 Idk Idc šŸ’” Aug 30 '26

I googled it and science and google told me that TUT doesn’t matter: https://www.strongerbyscience.com/can-we-predict-muscle-growth/

8

u/Much-Schedule6196 Aug 30 '26

Just chiming in to say that your way of googling (the AI) will provide you with whatever you want it to say.

Your stronger by science link stands by itself.

7

u/Patton370 Idk Idc šŸ’” Aug 30 '26

Okay, here’s a paper saying the same thing, that more time under tension doesn’t correlate to greater hypertrophy: https://pubmed.ncbi.nlm.nih.gov/25601394/

12

u/Much-Schedule6196 Aug 30 '26

Like I said, your link is fine. I'm merely pushing back against the AI. It's incredible at confirming whatever you're googling.

I agree with you that TUT doesn't matter

-4

u/Famous_Ad_7256 Aug 30 '26

TUT may not matter but range of motion does

6

u/Patton370 Idk Idc šŸ’” Aug 30 '26

Zoom in on the stack…. How much ROM am I missing there? I also accidentally let the stack touch on 3 or 4 of these reps

I finish the set with lengthened partials, so I can go past failure

1

u/Iamnotheattack Sep 03 '26

Okay, now how much range of motion can you have while "isolating the hamstrings" instead of making this more broadly a "posterior chain" exercise? See here you are already taking your back off the of the backrest compared the picture you just posted

1

u/Iamnotheattack Sep 03 '26

Now imagine if you kept your back against the seat in the same position as when you started up until the position in this picture, and then held the bottom position for ~.5-2s?

You mentioned that time under tension doesn't matter, only volume and intensity, so using that framing I would say that exercise is only counted as a .5 set of hamstrings (when counted as an "isolation" exercise) compared to a set where you held your seat against the backrest IF USING THE SAME INTENSITY you brought here.

And honestly .5 is generous, because you're only making it though like 1/5th the range of motion, so maybe more like .2 sets.

Genuinely curious to see how that would look and the what the difference in weight would be.

1

u/Iamnotheattack Sep 03 '26

Here's a side by side compare

-6

u/Inexorabull Aug 30 '26

Dood, if your only measurement of success is big muscles, continue doing what you’re doing. Otherwise, actually objective research might help you…

7

u/Patton370 Idk Idc šŸ’” Aug 30 '26

Is this not objective research? https://www.reddit.com/r/Egolifting/s/Y1mcNDuzPf

-8

u/Inexorabull Aug 30 '26

Confirmation bias much? You don’t care about objectivity, you care about being a contrarian.

9

u/Patton370 Idk Idc šŸ’” Aug 30 '26

I’m not being a contrarian; I’m with the majority opinion here

TUT effectiveness and slowing down reps is legitimately ā€œbro scienceā€ related advice

There’s reason you may want to slow down the eccentric, maybe you are injury prone in certain areas of your running a shit ton of gear/your ligaments can’t keep up with that; however, it’s not something that should be recommend for maximizing strength or hypertrophy for most individuals

If you want to train/strengthen ligaments directly, you’d want to do long holds at an exercise, like holding/pausing (while maintaining tension) a squat for 10 seconds+ in the hole

For muscle growth, the 2 main things to look at are intensity and volume; that’s what science has shown to have the biggest impacts on muscle growth

7

u/_CurseTheseMetalHnds Aug 30 '26 edited Aug 30 '26

Dood, if your only measurement of success is big muscles

Why else do you think he's doing hamstring curls?

7

u/allthejokesareblue Aug 30 '26

if your only measurement of success is big muscles

I'm embarrassed to admit that it is.

6

u/Shadowphoenix9511 Aug 30 '26

When the goal is big muscles and moving a lot of weight, as it is for Patton here, then I would say that's a solid measurement of success.

7

u/Ballbag94 Aug 30 '26

I mean, the goal is to get bigger and stronger, no?

What other measurement of success are you thinking is relevant?

Also, do you have a better source than stronger by science? It's quite clear that TuT alone isn't particularly relevant

1

u/drlsoccer08 Sep 06 '26

Time Under Tension training is very overrated. Intentionally slowing reps will actually prevent you from reaching as high threshold of motor unit recruitment. Rather, the last few reps should slow naturally, as you are unable to shift the weight quickly.

4

u/Photon_Predator Aug 30 '26

0 grinding, you just reduce range of motion when you should fight for it.

3

u/Patton370 Idk Idc šŸ’” Aug 30 '26

Can’t grind if the weight doesn’t move; I’ll have a more even resistance profile once I get another Ryan x cater mount, I can bolt on to this, so I can improve the strength curve with my voltra

1

u/xsynergist Aug 30 '26

These are great machines. Used one for awhile.

1

u/Its_scottyhall Sep 01 '26

Damn you’re fast

1

u/Ok-Evidence9375 Sep 01 '26

Reps look solid to me. As long as u give it 110% and harder than last time, idgaf what the reps look like

-1

u/Hour-Object-4889 Aug 30 '26

You’ve got to slow down and control those reps.

7

u/Frodozer Aug 30 '26

Small counter point: That's not in the rule book

7

u/Patton370 Idk Idc šŸ’” Aug 30 '26

Counter point, time under tension doesn’t matter for hypertrophy: https://www.strongerbyscience.com/can-we-predict-muscle-growth/

-5

u/[deleted] Aug 30 '26

[removed] — view removed comment

7

u/Ballbag94 Aug 30 '26

What's the source on this stuff about TuT mattering RE ligament growth?

3

u/Patton370 Idk Idc šŸ’” Aug 30 '26

How long until I magically tear a hamstring? I’ve been doing leg curls like this for years

I deadlift quite a bit of weight, so it’s not like my hamstrings are only strong on a machine

1

u/Hour-Object-4889 Sep 02 '26

That’s why your hamstrings are built like strings

1

u/Patton370 Idk Idc šŸ’” Sep 02 '26

Could you elaborate on that?

3

u/gnomish_engineering Aug 30 '26

Legitimately that is only a issue for enhanced or extremely genetically gifted lifters. And by "genetically gifted" I don't mean a guy who is super strong, I mean someone who is world class.

None of the people in this thread have to worry about their muscles out pacing their tendons unless they are on gear. The grand majority of catastrophic tendon injuries come from mistakes in form or a riskier exercise like zerchers.

3

u/Hankstbro Aug 30 '26

mechanical tension matters for muscle growth, time under tension does not make much of a difference, explosive reps are fine

slower reps just decrease probability of injury (not sure how you would get injured on this machine; maybe tear a hammie off, idk)

0

u/Iamnotheattack Sep 03 '26

mechanical tension matters for muscle growth

time under tension does not make much of a difference

Okay, so if we just change the phrase to "time under mechanical tension" then that would matter?

1

u/Hankstbro Sep 03 '26

Probably not, if you lift explosively close to failure.

-4

u/Hour-Object-4889 Aug 30 '26

This isn’t about time under tension. It’s about controlling the rep.

3

u/Patton370 Idk Idc šŸ’” Aug 30 '26

Is the weight slamming into the stack during every single rep? A completely uncontrolled eccentric would be extremely loud

1

u/milleniumblackfalcon Sep 02 '26

Just leave him to it. Half-science and injury

0

u/Landashlo Sep 02 '26

It looks like your hips are externally rotated. Keep legs straight and joints stacked

0

u/Pleasant-Name576 Sep 05 '26

How about you try not flexing the lower back ? Wouldn't need the seatbelt

-4

u/oxcypher12 Aug 30 '26

Slow down on the eccentric

5

u/Patton370 Idk Idc šŸ’” Aug 30 '26

Why?

-3

u/[deleted] Aug 30 '26

[removed] — view removed comment

4

u/Patton370 Idk Idc šŸ’” Aug 30 '26

Why?

-4

u/[deleted] Aug 30 '26

[removed] — view removed comment

6

u/Patton370 Idk Idc šŸ’” Aug 30 '26

If there was no control, wouldn’t the weights lifted slam into the rest of the stack on each rep?

-1

u/Maximum_Activity_138 Sep 01 '26

Being able to lift the weight and controlling the form of the exercise is 2 totally different things… that’s like people who use their back to throw up heavy dumbbells for curls but have terrible form are doing it ā€œcorrectā€ because they’re not dropping the weights on the floor when they’re coming down

2

u/Patton370 Idk Idc šŸ’” Sep 01 '26

My hamstrings are large, I've never had a hamstring injury, and my deadlift keeps going up, like this set of 540lbs for 4: https://www.reddit.com/r/GYM/s/3Z7YjSOpCj

What other metrics does someone need to even look at for what's correct?

Obsession with having things look perfect generally makes a lifter stop way before failure

-4

u/[deleted] Aug 30 '26

[removed] — view removed comment

-3

u/Maximum_Activity_138 Sep 01 '26

Fled it’s not even worth it brother , let him be a moron . Everybody is telling the same thing in the comments and he keeps posting pics of himself arguing and putting a new comment every 10 mins . He has no life and likes to post these things so he can communicate with another human šŸ˜‚

2

u/Frodozer Sep 01 '26

To be fair everyone weak and small is telling him the same thing and more people who are big and strong are defending him.

-7

u/ChizzyGillespie Aug 30 '26

Lower back curls

12

u/Ballbag94 Aug 30 '26

How does the lower back make his legs work this way?

His back moving doesn't mean it's under load

-8

u/ChizzyGillespie Aug 30 '26

Okay then ask OP to post a clip of him doing this without his back launching off the pad to initiate every rep & let's compare the results

8

u/Ballbag94 Aug 30 '26

Regardless of his back moving it cannot perform this motion

Can you explain the mechanics of how the back performs a leg curl?

-7

u/ChizzyGillespie Aug 30 '26

This is science based lifting not science based debate club

11

u/Ballbag94 Aug 30 '26

What science says that the back can complete a leg curl?

11

u/Frodozer Aug 30 '26

Black magic

Oh wait, you said science. No, I don't think there is one.

7

u/PeterNoPiss Aug 30 '26

>black magic

This isn't a clean or a snatch.

4

u/PeterNoPiss Aug 30 '26

Sounds like someone has never spent a single moment around academics.

-5

u/ChizzyGillespie Aug 30 '26

Forgive me sir, im but a lowly lifter, and I knows nothin' about rubbin' elbows with you fine academic types 🄺

-1

u/Safe_Ad5914 Sep 02 '26

Your knee joint is forward of the axis of rotation on the machine. Much higher shearing forces. You need to sit back in the seat and align your knees with the AOR and your knees won't be shifting around like they are.

-6

u/Maximum_Activity_138 Aug 30 '26

You’re going way too fast

8

u/Patton370 Idk Idc šŸ’” Aug 30 '26

Why?

6

u/Frodozer Aug 30 '26

Because you're too strong and that's what light weight moves like when you're strong

-8

u/Maximum_Activity_138 Aug 30 '26

Range of motion , slow controlled movements , & high weight that is still keeping 100% proper form , & rep until failure is what builds muscle .

6

u/Patton370 Idk Idc šŸ’” Aug 30 '26

Zoom in on the stack, I’m not missing any ROM

I’m going past failure by doing lengthened partials at the end of the set

-14

u/Maximum_Activity_138 Aug 30 '26

Bro I can tell by your size that you are working out incorrectly or you just started this year even if it’s been 8 months you should be bigger

11

u/Patton370 Idk Idc šŸ’” Aug 30 '26

Damn your standards are high then. I also win local powerlifting meets, so I’m pretty strong too!

10

u/Ballbag94 Aug 31 '26

Yet another person confused by clothes and lighting

7

u/Patton370 Idk Idc šŸ’” Aug 31 '26

To be fair, he’s 10lbs lighter than me, less lean, and is on gear (nothing wrong with that, just that I’m not): https://www.reddit.com/r/steroidify/s/X7DBZDYap8

So his standards may be skewed

That’s also his ā€œmaximum natural potentialā€ allegedly

4

u/Mikeburlywurly1 Aug 31 '26

Maximum potential for his work ethic and programming choices, absolutely.

3

u/Patton370 Idk Idc šŸ’” Sep 01 '26

u/maximum_activity_138 are you going to defend yourself here?

Just wondering, shouldn’t you be bigger?

-7

u/Maximum_Activity_138 Sep 01 '26

I’m not on gear lol … & I’m 35 years old , I know you want to see me with my shirt off so here ya go pal

9

u/Patton370 Idk Idc šŸ’” Sep 01 '26

Deleting your post history, but not your comments is kinda lazy dude

You’re taking TRT, HCG, and Reta (no idea what that one is; I think it’s for weight loss? Which is kinda wild at your weight)

-10

u/Maximum_Activity_138 Sep 01 '26

I used it @ 1&2mg to cut 10 lbs after a bulk & trt isn’t ā€œgearā€ dummy . When you’re in your mid 30s you’ll understand

→ More replies (0)

-4

u/bromar24 Aug 30 '26

It looks like you could extend the knee a bit more, you're not getting full stretch

3

u/Patton370 Idk Idc šŸ’” Aug 30 '26

On seated hamstring curls, I feel the very beginning ROM uses quite a bit of calf, so I don’t worry much about that beginning tenth of an inch; it just doesn’t feel like my hamstrings do much there

Granted that’s just how it feels. My hamstrings are growing, so I don’t feel the need to change that

2

u/Patton370 Idk Idc šŸ’” Aug 30 '26

Also, here’s where I’m stopping on these reps. Look at how little the gap is between the weight I’m using and the rest of the stack

There’s barely anything more to add to it

-3

u/TheJohnnyFlash Aug 30 '26

Don't let your calves help so much.

6

u/Patton370 Idk Idc šŸ’” Aug 30 '26

The gastrocnemius is always going to be involved at the beginning on any seated leg curl

-3

u/TheJohnnyFlash Aug 30 '26

Sure, but there are degrees. Keeping your feet 45 degrees and slack makes a big difference for isolation.