Leg Extensions Are SAFE For Your Knees

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Learn why leg extensions are safe for your knees!
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Are Leg Extensions Safe After ACL Reconstruction?
• Are Leg Extensions Saf...
Are Leg Extensions Functional?
• Leg Extensions Are Fun...
Programming Leg Extensions After ACL Reconstruction (3 Phases)
• How To Program Leg Ext...
Intro (0:00)
Anatomy (0:12)
Too Much Stress On Your Knees? (0:42)
Is Stress Bad? (2:33)
What If You Have Pain? (4:10)
Summary (4:39)
-----
Disclaimer: The information presented is not intended as medical advice or to be a substitute for medical counseling but intended for entertainment purposes only. If you are experiencing pain, please seek the appropriate healthcare professional.

[@E3Rehab]

Thank you so much for watching! Check out our blog on the topic here: e3rehab.com/blog/legextensions

[@tonyhernandez9632]

Are any of these exercises particularly bad if you've had a medial menisectomy?

[@gnolaum10]

The best explanation and advice I found on the web for leg extensions! Thank you very much!

[@E3Rehab]

Thanks!

[@cesarnoyoutube]

Awesome content and clearly evidence-based research delivered... thank you so much for your work! Keep going...

[@E3Rehab]

Thank you!

[@ParvParashar]

Great video! Leg extensions and upright rows were the two exercises that I wanted to do for a long time but avoided due to unreasonable thinking and irrational fear. You guys are doing incredible work sharing all the phenomenal information with us and providing the evidence for it. I can’t thank you enough for all the amazing stuff you do. I’m not afraid of any movement anymore. It’s just about taking proper and reasonable safety measures and seeing how the movement feels for you as an individual and observing the feedback your body gives you. My knees and shoulders love and are happy with leg extensions and upright rows respectively. 💪👍🙏

[@aroundtheworld6093]

This was amazing.thank you so much❤

[@rajeshchatterjee8446]

Thank you so much for such an informative video.

[@basfinnis]

Great information. Thank you.

[@debsagan8469]

Had a DTKR 6 months ago. This is really important and your vidieo about isometric LE was great too! One on TKR recap would be helpful.

[@gokudbz896]

Your videos really helps me keep going, thanks bro ❤️

[@fernworm511]

Tore my patellar tendon last March, been banging out leg extensions. Long road but getting results!

[@wholarrryo]

usually skipped legs lol but now that I'm grinding deadlifts and squats i have knee pain this video makes so much sense thank you.

[@Balla-ph2rd]

Check out knee over toes guy

[@tinofradiante5831]

Thank you very very much Sir Your content is absolutely incredible

[@Ben.N]

Great content

[@sonderexpeditions]

Thanks for this.

[@RILEYOBRY]

Fabulous content

[@benschamberger8933]

Fantastic video

[@himalshadharmapala5530]

Thanks well explained

[@RXP91]

So when I got into lifting - I religously avoided Leg Extensions due to what I thought were well referenced articles (like Eric Cressey's tnation article on it). I ended up getting quad tendonitis recently and to my surprise leg extensions were the cure! I can't do them at home but do the Spanish Squats and the whole thing about adapation makes sense to me now. Your videos are fantastic - keep doing what you're doing please!

[@supimsatan]

I had knee pain doing leggpresses after some years. Did not do leg extensions prior to it. Since i did knee extension as a warmup before leggpresses, my knees felt really good and my injury faded away in a few weeks.

[@user-nl6xi2vu1v]

How is your quad tendonitis now

[@RXP91]

@@user-nl6xi2vu1v it’s gone completely now.

[@sidneyball4841]

I know this is 2 years old. Having said that, thank you for providing sources. KZbin is inundated with "experts" lol these folks just expect you to take their word. You back it up. Thank you. Also, new Sub cus if your VMO isolation debunk video where you mentioned overall improved leg strength would be of greater benefit than attempted isolation of the vmo. Anyway.. thanks mate!

[@ibrahimmohammed1510]

Keep going ❤️❤️💪

[@FalloutBreakbeat]

Really enjoying your vids and you give me a lot of confidence in your advice. I searched to see if you'd done anything on the VMO and patella tracking, but not yet! If you know a good approach to knee rehab due to weak-ass VMO, please consider sharing in a future video. There are about 1000 exercises online and none that I can find reference research like you do, so I'm unwilling to try them.

[@E3Rehab]

Just do a combination of exercises that emphasize the quads and the VMO will strengthen! It cannot be isolated.

[@makobe584]

​@@E3Rehab Due to squatting with a leg length discrepancy I've developed a VMO imbalance between my left and right leg. The VMO on my longer leg (right) works fine, but the VMO on my shorter leg (left) just won't activate during leg exercises, including squats and leg extensions. On my left leg the other quads take over and my left VMO never gets sore. It's about half the size of my right VMO. What can I do to make it activate normally?

[@lorini11]

Thank you so much

[@pogo55555]

Nice presentation. Liked.

[@corky914]

Thank you.

[@sugar1973us]

Thank you, you just got a like and subscribe! Now I don't have to disassemble and return the adjustable weight bench with leg developer. 😄 I had my worries. All exercises pose risk. I injured myself doing yoga! Form is especially important with every exercise.

[@S7ilgar]

Evening Doc (happy new year 🙂), I'm practicing Reverse Nordic Curl that I know you used successfully for rehab (I watched your video about this exercise). RNC puts maximum stress on knees at 180° which - if I understood properly - has not been assessed in the studies you mentioned. I understand that tissues can adapt but is there a greater risk on this exercise than others? I use a safe tempo (5s descending + 5s ascending) and do 3-4 sets per session, twice a week. However I plan to overload by using resistance bands and extending my arms upwards and I'm wondering about the risks for the knees, especially considering not many people practice this exercise and even less on a long period of time with progressive overload so I guess little feedback about it.

[@user-xr6rw2bz3r]

Great channel.

[@E3Rehab]

Thank you!

[@SKIAMIALMOG]

Dear Friend! Thank you very much for all the great information which truly assist me after my second time ACL injury. I am all for surgery but need two stage ACLR, from the first one that I had 19 years ago, done the hamstring graft with bioabsorbable screw, remain a cyst in the tibia tunnel, already done the first stage with lemaire procedure on the 11/07/2023, one thing the first injury taught me, is that strengthening knee muscle is the most important thing, using extensions machine which isolating the quadricep is a must in my belief! Since my second injury on the 22/03/2023 when I am using the extensions device and trying to load weight I feel the tibia buckling!!! and using the device only up certain angle doesn't stimulates the muscle enough for me. Can you please give some insights? Thanks Ami ALMOG

[@IndigoOrAmigo]

You guys are really good and your video editing is even better. Thank you for using actual scientific literature as refference in videos. Beside that I have a question, if you could help me. Which books would you recommend me to read for physiotherapy, kinesiology, biomechanics etc.

[@E3Rehab]

www.amazon.com/Kinesiology-Musculoskeletal-System-Foundations-Rehabilitation-dp-0323287530/dp/0323287530/ref=dp_ob_title_bk This is a pretty popular book.

[@IndigoOrAmigo]

E3 Rehab thank you very much

[@kikofit4536]

This was so informative and helpful.

[@TimeFlyingBy1884]

Can I please get your opinion on the seated leg curl machine? Are they bad for our knees? Thank you.

[@iamgoat3035]

what causes pain in back of knee? posterior cruciate ligament? i was having pain for months when kneeling down which got progressively worse the more i sat down on my ankles while kneeling. Squats lunges made up the bulk of my with glutehip exercises and stiff deads rounding it out but i was also sometimes working in leg extensions as a pre exhaust to squats and lunges. ARE LEG EXTENSIONS the likely culprit? i never had any pain doing them . long story short it got acute one day that i could barely walk, so i iced it agressively on off for 6 hrs, then again the next morning with one ibuprofen the night before and one in the morning and it was 90 better within about 36 hrs now im stretching my quads after every workout w/o pain and hopefully that prevents it from returning

[@Sh.aqrabawi1]

Hi, I want to buy one machine and not sure what weight can be best for beginners? Thanks

[@jessimabis3866]

I have chondomalacia. Wondering if leg extensions are okay with this issue?

[@williamdzubiak5712]

just got done at the gym about 4 hrs ago an i find walking up the stairs to be very painfull in my left knee cap when i was at the gym i did leg exttension an i beleve i did 2 sets of 250 10 reps an felt fine till now

[@joshuahankins2613]

Are leg extensions to 30-45 degrees a good rehab exercise for pfps. Also heard min squats to 45 degrees is good too for rehab.

[@sheldoncooper8199]

This is a very informative and easy to understand video even. For me a Guy that has English as a 2nd language. Thanks.

[@davidsanders.fineart5551]

The studies used ankle weights for LAQ. The issue is there is no resistance at the starting position for this (knee flexion start). This was made evident with the isometric resistance in the second study. It's the load of the knee joint that's the issue. This video was enlightening, but it didn't really explain long term effects of degeneration at the payellofemoral joint, which id love to hear more about.

[@marcgiot3449]

Will this benefit explosive power and strong legs for playing ice hockey?

[@oraciopozzo8694]

Is it safe for a knee with torn ACL without surgery (20 years ago) ? I mean anterior tibial shift ?

[@Savalan91]

Hi. I have a 2nd degenerate meniscus due to trauma in football. I doing weight training exercises and all of exercises are fine without pain except leg extension. I feel a little pain while i doing this exercise. Should i continue to do it? or should I refuse due to pain?

[@grossblue]

love how detailed your content is. if i had acl reconstruction w patellar graft does it impact this info at all? because i’m dying to do leg extensions, my hips are off so i avoid squats but need quad strength back. all im currently doing is lots of stairs

[@E3Rehab]

check out our ACL videos! I'm also going to post a new leg extension video in a few days.

[@insolentchild6989]

Just don't go heavy

[@dary9839]

I have completed acl , How can i exercise before knee surgery?

[@_clorp]

This helped me so much. I've been avoiding these due to knee problems, focusing mainly on squats, however it was only getting worse. The 90° is where I feel the most pain, so I think I've been over exerting on the squats. Would you agree?

[@aonyx5270]

Problem with squats is if the knee is further forward than the foot, then you have too much load.

[@maxwellthomaswilson2012]

@@aonyx5270 not true at all

[@Kem3s]

@@aonyx5270 bull

[@johnman8554]

Somehow it makes sense squats are worse for knees

[@ozzy6162]

I get knee pain right under my knee cap when doing leg extensions - however it's only in my right knee. For some reason I don't get any knee pain when squatting or doing leg presses (?).

[@VpKing]

I couldn't train legs for 2 years because of an injury , surgery etc ! But im pretty sure leg extension and any other machines were created for muscle rehabilitation

[@adeeshathodthillayam8951]

I started to do seated knee extension after 4 week of acl surgerys ...is it ok

[@tupai62]

How many repetition,set can do?. Is it can do this exercise everyday?, Is it not overworkout?

[@fmard10]

very beneficial thanks can you also talk about squatting below parallel vs shallow squat, for me shallow or regular squat bothers my knee more than squatting below parallel

[@vegetable3665]

Same for me, there are a few studies showing that using lighter weight and just doing full depth squats is indeed less stressful on the knees while offering the same or even faster growth

[@fmard10]

@@vegetable3665 yeah it weirds how most coaches say that if u have bad knee have shallow squats

[@bhanwargaur7262]

Sir after acl operation when we start leg extension..... That is safe for acl surgery

[@divinejusticefeelsgood]

I have patella problems. Still good?

[@bonksmusic1]

I avoided leg extensions for too long after ACL recon but could never regain full flexion or regain muscle mass on my quads.. I started doing more single leg extensions recently and found no increase in pain or swelling..

[@dingdong6005]

How are you doing now? I’m

[@ishankumar6230]

Had quad tendon strains in both legs and went to a physical therapist which greatly reduced the pain and looking at rehab exercises now. My pt made me do body weight leg extensions so I was wondering if weighted leg extensions would help speed up the healing process?

[@wread1982]

It’s safe to use a weight you can easily control and not cheat to get it up

[@hoyhoy6530]

What is your opinion on returning to the same sport activities where you already tore your acl in both knees? Facturing in the amount of joy it gives to peform the sport and the risk of re-injuring.

[@E3Rehab]

If you're even remotely unsure, I'd work with a good physical therapist who you can have that discussion with and will help prepare you to return to sport if that is your goal.

[@MaddRezz]

My right knee doesn’t feel as strong and might “buckle” during this. Not sure why that is

[@bradleyjpaolucci]

So I've had patellar pain for a while and I love being on a muscle building program. Would partial reps mean less gains?

[@E3Rehab]

Not necessarily - pubmed.ncbi.nlm.nih.gov/33977835/

[@gungnir3926]

After you train a chain/group I think a decent guide is that you do not want to feel very lobsodedly sore in any part of it both muscle leguments and bone. This is less true if you are a beginner with built up unbalance. For beginners they should keep the weight down until their weakest link is no longer that but all the links are more equal. But I am only a bro not a certified trainer.

[@briansteiss5762]

Can I find after I do with an idiot tight but no pain

[@henryfernandez2533]

Great video man, I have an important question since I switched to home workouts. Are those benches with the leg extension attachments any less safe than a leg extension in your video or others in the gym? Mines for example is the Golds Gym XR20. Thanks in advance, I need my knees since my job involves alot of walking checking Patients hearts.

[@E3Rehab]

The loading will be different (less at the bottom and more relative at the top) so you might just gradually build up if you're not used to it.

[@henryfernandez2533]

@@E3Rehab Makes sense, Thanks man.

[@honeydiccin6731]

*Jeff Cavaliere is typing*

[@bellagdur9786]

Leg extensions gave me quad tendinites which i never had doing just squats with weights

[@headlinesuganda.282]

keeping fit and exercising is keeping a heathy body plus a steady mind set all the times.

[@talilkr5238]

5:00 wow! your outer quads are 🔥🔥, will leg extension alone be enough to hit the outer quads?

[@E3Rehab]

Anything that hits the quads. I do split squats and leg extensions as my primary quad exercises. You can see some of the split squat variations I do on my personal IG account (dr.surdykapt)

[@talilkr5238]

@@E3Rehab thank you, keep it up 👍

[@seckin_keskin]

it has been 6 moths agi i got acl if i do leg extension full range of motion it is harmfull coz i did not do before

[@Mjzzz11]

Is the comparison of PFJ forces of the leg press and leg extension considering the lb of weight lifted to the amount of stress placed onto the joint?

[@E3Rehab]

They try to match loads/effort in the studies.

[@Mjzzz11]

@@E3Rehab thanks for the reply. Just want to say thank you for all of your amazing videos. You guys are doing great things for the rehab and fitness community and it’s time that the educated professionals take the space on KZbin instead of the fitness gurus.

[@E3Rehab]

@@Mjzzz11 Thank you!

[@ftello5598]

Go tell Jeff Cavalier that leg extensions are safe for your knees lol..

[@samuelf7073]

Honestly just came from that vid made like 10 years ago

[@AmeerAmeer-zg3ju]

No

[@300pzl]

leg extensions are killing your gains.

[@lauramarianella]

I can tell you that I can't do leg extensions neither squats. So much pain due to I have osteoarthritis, I feel more pain with the 1st one.

[@abobek14]

🤣🤣🤣

[@reinerheiner1148]

What if the cartilage of the patella is damaged (as in chondropatia patellae)? Should the painful angle be avoided or should it still be trained to compress the cartilage so it can absorb nutrients when it expands again (and trigger collagen synthesis by applying pressure)?

[@E3Rehab]

Depends if it's tolerable and contributes to your overall goals.

[@reinerheiner1148]

@@E3Rehab The minimum goal would be to keep that catilage from degenerating further (as much as is possible anyways) and to ensure that the knee is as functional as possible

[@S7ilgar]

@@reinerheiner1148 how did it go since then?

[@GurpreetSingh-hd1ny]

You are nice Doc

[@Kmasse8]

Broke my knee three times past 30 years in sports (skiing, judo, football) and just over a year ago it was operated again as I received a tackle while running at full speed. The surgeon that performed the operation is part of FC Barcelona so I trust him fully. He told me to avoid squatting beyond 90 decrees (all the way down). However, leg extensions and leg presses seem to be good for me (ACL and MCL injury, osteoarthritis).

[@briansteiss5762]

I had a full knee replacement about 10 years ago. I do extensions but I get no pain. Is there a certain way to do them?

[@wread1982]

Just make sure your thigh, knee and calves are in line and don’t use a weight you have to cheat with, use a weight you can easily control and go for the burn. By doing one leg at a time you can make sure you leg is in better alignment then doing both at once

[@richiegelman2684]

I am 3 years post ACL reconstruction and all I can say is that the leg extension machine kills my knee, and it's the only machine that does that. Contrary to the two papers presented, I would argue that knee compression is not the issue; the issue is that the motion disturbs knee cap tracking -- at least for me. Writing this message to hopefully reach people before they learn what I did, the hard way.

[@S7ilgar]

Not a professional but I always heard the problem with machines is that they force you in a trajectory that may not be adequate for your morphology. Try doing Leg extension with resistance bands.

[@Kickbackske]

Just got into a disagreement with a guy at the gym about leg extension hoping you can help. I always have the machine positioned on the last pin so the angle of my legs goes slightly passed 90 degrees when I come down on the negative to achieve a full stretch and full range of motion because i still feel tension on the quads. This guy at the gym is saying there is NO quad activation when you go down passed 90 degrees and it is only damaging to your knees?? Cant find anything online about this

[@E3Rehab]

He's wrong.

[@Kickbackske]

@@E3Rehab his argument is you can achieve the exact same thing having the machine set at a 90 degree angle. I'm saying you get more stretch, thus recruiting more muscle fibres

[@johntaylor5288]

15 years ago I fell and ruptured both quadricep (or patella?) tendons. They were surgically repaired the next day. Orthopedic surgeon said he tied them very tight and I could go back to doing whatever activities I was doing prior to the injury after rehab. I've been reluctant to do leg extensions, but I do regularly squat and lunge without any issues. Should I avoid leg extensions?

[@insolentchild6989]

Just go really light to be safe and rep it out until in burns like crazy

[@dongy762]

Thinking of incorporating leg extensions in my patellar tendonitis rehab protocol. Perfect timing on this video, since I got here due to researching about the supposed "leg extension boogeyman" that destroys knees. I thought to myself, how can studies be recommending leg extensions for knee rehab if they're actually knee destroyers!? Thanks guys.

[@E3Rehab]

No problem!

[@MariNate1016]

How long did yours take to go away? I also have it

[@dongy762]

@@MariNate1016 A few months. Tbh I had some extended periods of rest because of work, but doing this with light weight and focusing on the eccentrics helped a lot. Also squatting on a slant board (I used both legs instead of single leg like most guides recommend). Every time it mildly flares up, I just start doing both again and it goes away for a while.

[@dingdong6005]

How are you doing now?

[@thekingswool]

I get a sharp pain at the front of my right knee after doing a few squats. The first three are usually ok and then my knee begins to feel “stiff” and hurt with the fourth, fifth, etc. It also happens during power walks after like 45 minutes. I’ve thought about going to the doctor, but I’m not sure if that would be too trivial a reason to waste their time lol.

[@E3Rehab]

If it's stopping you from doing the things you want to do, it might be helpful to see a physical therapist. We also offer online coaching through our website.

[@wread1982]

Put a band around your knees to make sure they aren’t caving in

[@alokdwivedi3860]

Sir my grandfather and my father both have problem of knee oiling to getting end ... What should I do to avoid this disiege

[@niggaper4937]

Backflip U cant do anything I guess Genetics

[@loulopez554]

Doug Brignole says they're safe.

[@Ace_of_Yoga]

Hey guys, do you guys say the same for Sissy squats?

[@E3Rehab]

I haven't looked to see if there's any research on them, but yes, the same principles would apply.

[@vegetable3665]

@@E3Rehab check out kneesOverToesGuy, he has a lot of emphasis on training the joints and strengthening the hamstrings so they're able to match the incredible power of the quadriceps

[@diogogambini7018]

I’m 20 years old and over the past 3 years had 3 knee surgeries that left me with no medial meniscus on my right knee, and an incomplete medial meniscus (partial meniscectomy) on my left knee. Running, Sports and High Impact activities are pretty much out of the equation for the rest of my life, unless I want to get arthritis in my 30s. With that said, I had to adapt my leg training over the last few years, and that led me to remove some exercises from my routine. The first one was leg extensions. So, to keep it short, I’ll ask the following question... For someone with no meniscus, are leg extensions more prone to lead to cartilage wear over time, when compared to exercises like squats and leg press?

[@E3Rehab]

The leg extension is a non weightbearing exercise so it wouldn't load the menisci or tibiofemoral joint all that much. I would base exercise selection on comfort and your goals rather than speculating about what might be worse in the long run because any exercise progressed appropriately is likely beneficial.

[@nicknelly1]

Yes, they're safe. Keep doing them. You're welcome.

[@fishingninja]

that machine feels like it could snap my knee cap at any second, yet I still use it. Am I doing something wrong?

[@dhucks6929]

are you using a trash compactor?

[@demon6937]

I think I went too heavy because my legs shake a lot when lifting

[@ashleshkrishnak3550]

Can I do leg extensions after I recover from patellar tendonitis?

[@E3Rehab]

We are going to be having a video all about patellar tendon pain coming in a couple months!

[@ashleshkrishnak3550]

@@E3Rehab oh ok thanks so much

[@iwonaholka5493]

Sissy squat are safer/better than leg extension?

[@E3Rehab]

“Safer” and “better” are context dependent.

[@iamalegend802]

I had a meniscus repair 2 years ago. Can leg extension damage it again ? I skipped leg day for a month because i was scared. Thank you

[@E3Rehab]

It would unlikely negatively affect your meniscus repair from 2 years ago but you can always get assessed by a physical therapist in person to discuss it in-depth.

[@iamalegend802]

@@E3Rehab thank you for the respond

[@pesopeso510]

Everybody is different bruh. If it feels uncomfortable go light or move to a different exercise that builds the same muscle. Do the exercises that are comfortable for you to build your leg muscles more and keep revisiting the leg extensions until it feels comfortable. Nobody knows the negative effect this exercise will have on your meniscus better than your body not a KZbinr or even a therapist. Just my opinion.

[@solavs9982]

❤️‍🔥❤️

[@itzelramz]

I have had pain on my lateral meniscus and I don't know where I'm getting it from. I hurt myself while doing bss but I always do them and it had never happened before I find that stretching after my leg days helps a lot.

[@carlorocky]

I have only 40% of my ACL and do these under light load 3x per week. I’ve been doing this for 3 months and have been getting stronger. I understand the importance of strong quads, therefore, I do them. Do you think I might be engaging in an exercise that’s too demanding for my particular situation?

[@E3Rehab]

It's most likely fine.

[@UnboxerofWorlds]

When I do leg extensions, my knees sound like a bag of Christmas ornaments being slammed into concrete.

[@banandababa]

Ouch

[@tylercunningham4311]

My legs always feel better after leg extensions.

[@user-qm9wd3pg1t]

Thanks, i'm gonna do this exercise with dumbbells, they're all i got, some people say this exercise creates shearing stress in the knee, to me it looks more effective than the squat, which place load on the spine, by the way, is it bad to have a weight on the spine ?

[@E3Rehab]

Nope.

[@opal6664]

ابو زهرة انا كمان اشوف ليق اكستنشن يشد عضلة الكوات جدا بس ماهو كويس لصحة ركبتك عل مدى البعيد انا جاتني اصابة بسببه

[@user-qm9wd3pg1t]

@@opal6664 سلامتك مع الاسف اذن لا بديل للسكوات.

[@opal6664]

اقلك كوات مش سكوات

[@opal6664]

ركز ي ابو زهرة

[@NapalmThunderbum]

Like in many scientific disciplines the answer is "well, it depends". Because our bodies vary, the injuries we may have acquired vary, our current level of training varies (including our form) and all these can factor into it. I like this video for explaining this well and using scholarly literature from a professional. It just still makes it difficult to know whether I am properly and safely performing squats, leg extensions, or any other knee flexion exercise without consulting with PT's and MD's. But that is exactly what I am doing soon. Investing a little bit of money into speaking to professionals and getting some diagnostics done on my right knee that has had injuries and inflammatory responses. At the end of the day though I suppose any exercise done with my current capacity is better for my health overall as long as I continue to work on my form.

[@nw3877]

I mean people injure doing basic push ups so it's not exercises

[@Ace_of_Yoga]

Upright rows still risky tho?

[@E3Rehab]

No.

[@Reed325]

Shit hurts my knee Everytime idk what I'm doing wrong

[@Leven727]

Lower the weight and focus more on control, don’t lockout the knees

[@AmeerAmeer-zg3ju]

Thats why jeff said dont do

[@dickjohnson5025]

Used to perform leg extensions religiously up until 12 years ago when I read a study that shows 8x the force is exerted on the knee joint. No thanks. I do squats, leg press, hack squats, front squats and lunges. Haven’t missed extensions.

[@baldersn4474]

Me neither ! Well saud im 51 and it destroyed my knees..

[@dickjohnson5025]

@@baldersn4474 Sorry to hear that. I guess I quit in time to save mine. I used to go mental on those too, heavy weights, using wrist straps and seatbelt to hold my but down. Dumb. Lol

[@baldersn4474]

@@dickjohnson5025 my kness are ok mate buf everytine i done extebsions in low weughts slow reps etc even trued not to lock the knees , thd pain was unbearabkd for days later..Can feel it too dometimes on squats of i gk down to fat but nothkmg like extensions...I akso avoud sested leg press and them awful abductoe machines now as they kill my back...Will start trying to do lunges too...Many thanjs .

[@Schacal6666]

You messed something up there. You probably mean the study that stated that you can load 8x the max amount a standard leg extension machine (225lbs) has without any problem.

[@dickjohnson5025]

@@Schacal6666 Nope. The study is clear. The force exerted on the knee joint itself by the leg extension is 8x. Its a terrible exercise and not a functional strength movement.

[@jaidynayoub5826]

Well u see, I’ve got tendinitis in my knees

[@vegetable3665]

Try doing extensions without any weight for 1000 reps. Sense the tendons don't normally get that kind of blood flow this will allow you to recover from the tendinitis much faster

[@dand4075]

I fear leg extension machines because I had a knee injury from too much running exercises.

[@truthbetold6496]

There is the dark cloud over the weight lifting community that if you do not lift at least 400 pounds on squats and 500 pounds on deadlift you are a kind of Pssy. I injured myself at 29 got tone of prolotherapy and PRP after an idiot chiro made everything worst got cleared to power lift again at 47 and re injured myself even with perfect forms. I am now 51 and switch my training to a full body split and replace squats and deadlifts with leg extension 5 sets of 15-20, even light squats or db squats where putting pressure on the lower back. My legs looks insane compared to my powerlifting days big blocky legs.

[@ahmadkarim1144]

Just wrecked my knee doing leg extension, have not been able to bend it for like 4 days.

[@baldersn4474]

They really arnt ! Im over 50 and my kneee are desteoyed after leg extensions even on low weights !