r/ScienceBasedLifting

Image 1 — Help needed calculating felt weight on Calf Raise Machine
Image 2 — Help needed calculating felt weight on Calf Raise Machine

Help needed calculating felt weight on Calf Raise Machine

Hi.
In my gym there is this Hoist Plate Loaded Standing Calf Raise machine, and I was wondering how much of the loaded weight actually would feel if I was doing calf raises with just a barbell or something.
I tried googling it but it seems like no one really cares about this too much.

I found the manual but there is nothing about this in it and I am way too dumb for this kind of physics, I would'nt even know where to start but if someone here is ready for the challenge I have a picture from the manual and measured some force arm lenghts relative to each other in pixels.

I would really like to know what is the ratio for Y kg (loaded weight) and X kg (actual felt kg)

The link to the manual if the info is not enough:
https://www.hoistfitness.com/products/rpl-5405-standing-calf-raise#parentHorizontalTab2

If someone could spare their knowledge and time to calculate I would be ever greatful. Thanks.

Edit1: I basically feel like you could simplify it to like a lever arm maybe? pivoted at point A and lifted up by the end and the weight is somewhere between.

Also reading the manual I found out that is I am almost at the max loading weight and I dont know what will I do with my life now.

u/DankBoiMan21 — 1 hour ago

Why can't I find nowhere that pendulum Squats target the Rectus Femoris

Depending on body size and the machine it can differ quite a bit but all pendulum Squats target the rec fem to some extent due to the forward lean of the torso at the top. In the most extreme cases it can be quite similar to a leg extension (example: https://www.instagram.com/reel/DKSySfUIH3n). Some hip flexion will of course always happen but it is similar to an RDL where moderate knee flexion will allow the hamstrings to still work.

Why can't I find nothing about this? Am I wrong? And

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u/rosenkohl1603 — 6 hours ago

This may be a little long

Recently, I got into quite a spat in a thread about training 2 sets per exercise to failure is enough to stimulate growth.

I was very much torn down from this position, though, some of my thoughts weren't conveyed well or were simply untrue.

An advanced lifter told me that, and I quote "A person benching 275 for reps, isn't going to grow their chest, only benching 4-6 total sets per week. They'll need significantly higher volume, albeit likely at lower RPEs"

For context, these sources were mentioned: ​​https://www.strongerbyscience.com/volume/

https://www.strongerbyscience.com/wp-content/uploads/2025/06/image24.png

https://www.strongerbyscience.com/wp-content/uploads/2025/06/image87.png

Would you say that this is generally true? An advanced lifter would not grow their chest benching a total of 4-6 sets per week? There is conflicting information on this. I am sure we are all aware of the low volume high intensity trend currently,

But for example, people like Sean Nalewanyj have built his physique doing almost exactly that, 4-6 total sets weekly. ​I find it hard to believe that an advanced lifter would need "significantly higher volume" to progress. Yet, in these same sources, 5-10 is listed as "higher efficiency"

We also do see a trend between high volume and superior muscle hypertrophy, but I do not see any evidence that you couldn't make effective progress doing 4-6 total weekly sets per muscle group as an advanced lifter.

u/KorokKid — 8 days ago
▲ 0 r/ScienceBasedLifting+1 crossposts

Bulking at maintenance/tiny deficit

Wondered if anyone has any experience/thoughts on the ability to bulk or recomp at maintenance or perhaps a very small deficit?

I figured if I trained and recovered well, progressively overloaded and had a diet and lifestyle that’s conducive to optimal hormones and endocrine function then it’s possible?

My worry is that it won’t work and I’ll just be spinning my wheels for months without it working.

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u/bubbamori — 2 days ago

5 day UL routine for torso-dominant lifters

Made this with the help of Claude, substitutions are minimal (i.e. substituted leg press to belt squats, etc.)

Volume descriptors are in the “notes” page. Unconventional, but aligns with my fatigue and performance drop off during the workout.

Would you run this? Any pitfalls? For reference I am enhanced(slightly) 5’10, 85kg, 13% bodyfat, slowly cutting to 10. Was doing PPL for 4 months with similar total volume, made a shit ton of gains, but the recovery of my shoulders and arms was too fast, decided to bias them.

u/prettyanxious01 — 4 days ago

What excercises are best for massive forearms in your opinion?

I've been watching this guy on Youtube that has his entire channel dedicated to growing not only forearms but also hands (yes, hands xD thicker/bigger) - but he uses a lot of specialized equipment.

I don't want to spend a bunch of money, but instead prefer to workout with what I have which is whatever equipment is in the gym + my kettle and jiu jitsu belt (I'll explain in a second)

For anyone interested the guy's name is Roger C, he's training mostly for armwrestling purposes (I think xd) but probably for physique as well.

So for now I do Reverse Curls (3 x week, 2 sets x 15 reps)

I know biceps are mostly marked here, but forearms are the muscle part I feel burning the most during this excercise.

3 x 2 sets of 65 reps of whatever this is called:

https://preview.redd.it/6vrh6gyxlj0h1.png?width=401&format=png&auto=webp&s=ada2da7f798e81c939dbf8b232d6c3bcbe0bacf7

3 x 2 sets of 100 reps of (again) whatever this is called:

https://preview.redd.it/y6elhuo0mj0h1.png?width=414&format=png&auto=webp&s=3e73e55003d6837a153bd2038ddeb9dbe78ea780

They're both done with a 4kg kettle, which is too light for me already. The guy on the pics is Roger C I mentioned, it's not me.

Now a little backstory - I normally prefer to have a healthy amount of workouts which is 3 times per week. This guy claims of working out his forearms every day for 300 days or so.

No matter whether you think he's a natural or not - that's not what I came for, I come here to just discuss natural ways to build forearms (don't want arguments in the comments :/ )

Soo for now I'm questioning 2 things:

- Should I train forearms daily? I'm doing 18 sets per week, seems a lot for a small muscle groups, but on the other hand it might be also a tough muscle group to grow so it might need more stimulants. Idk.

- What exercises (most important question) should I add to my routine and where do I buy cheap equipment (under $20 per 1 piece of equipment). For now I'm planning to buy a small rubber ball for training thumbs/hands, I already have the hand gripper with adjusted weight settings. Anything else?

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u/ferero18 — 2 days ago

Is there any actual compelling studies on bulk/cut vs recomp, or a mix of both?

Curious as to weather there is an actual compelling evidence weather it is better to bulk/cut cycle or just recomp, or even some strange mix like bulking on training days and cutting on rest days, any solid research in this area and any worthwhile differences or are they all mostly the same with only minor differences?

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u/MurkyEconomist8179 — 6 days ago

SLDL on Cable Row

Hi all! Thinking about doing a SLDL on the cable row machine.

Anyone have any experience of this? Can you give me some tips? I would do a normal one, but I’m too lazy, and this looks easier to learn as a beginner movement

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u/Key-Chemistry-3873 — 2 days ago

Really struggling to create an optimal back day.

Ive used the same split for ages and haven’t been able to figure out what to do for back.
So far my back day has been:
- Reverse Pec Deck
- V-Bar (close grip) lat pulldown
- Biker Handle (shoulder width) Cable Row
- (sldl ofc too in leg day)
However i have been really struggling to grow my back.

The first two exercises are exercises i’m not willing to change. I also don’t plan on training upper traps only lower - mid but it seems the only exercises that train this is Y raises which i’m not a fan of.
Due to my structure as well i struggle to use wide lat pulldown bars.

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u/RecoverSuspicious537 — 6 days ago

Applying maximum science to the quadriceps

Husla pad for extra ROM, past failure for maximum scientific intensity, full stack for maximum mechanical tension, seat set extra far back for slight lean, and seatbelt for stability

I did a second set without the husla pad, to make the bro lifters happy

u/Patton370 — 2 days ago

integrating bench powerlifting into a bodybuilding routine?

i’m trying to train for hypertrophy but also improve my bench press 1 rm. i’m thinking of doing a ul rest ppl rest routine with added bench press on leg day
making meaning i can bench press 3 x week. i’m not sure what’s best way to approach my chest training should i drop the hypertrophy exercises like incline presses and flies etc and focus purely on a powerlifting bench routine or will recovery allow me to do both

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u/Dependentday25 — 4 days ago

Thoughts on my split? Does it cover all of the bases?

Putting extra emphasis on flat bench bc I want to hit 275 by the end of the summer. I’d say I’m early intermediate physique wise, with advanced strength(260b @139bw). 1.5 years training, overdeveloped upper compared to lower so my ffmi doesn’t rlly match my look.

Denz's ULPPL:
Like 2 working sets per exercise to failure to close to it.
Adjust to what i can recover from

** UPPER **
Flat Barbell Bench Press
Weighted Pull-Ups
Incline Chest Press
Chest Supported T-Bar Row
Lateral Raise
EZ Bar Curl/Preacher
Overhead Cable Triceps Extension

**LOWER **
Hack Squat
Romanian Deadlift
Leg Press
Seated Leg Curl
Standing Calf Raise
Hanging Leg Raise

**PUSH **
Flat Barbell Bench
Seated Smith Shoulder Press
Weighted Dips
Chest flies
Cable Lateral Raise
Overhead tricep extension
Incline Dumbbell Press (lighter than Upper day)

**PULL **
Weighted Neutral Grip Pull-Ups
Single Arm Lat Pulldown
Chest Supported Row
Reverse Pec Deck
Dumbbell Shrugs
Incline Dumbbell Curl
Hammer Curl

**LEGS**
Hack Squat or Pendulum Squat
Leg press
Seated Leg Curl
Adductor Machine
Standing Calf Raise
Cable Crunch

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u/ffmicel — 2 days ago

Hello everyone!

Some background: 33M, 174cm. Went from 102.7kg to 79.7kg in 10 months. Did Jeff Nippard's PPLF for most of that. Tried to recomp after and crept back up to 81.5kg, so I'm cutting again now.

I've been training for about a year and have a good understanding of the basics at this point. I put together my own ULUL split. I'm keeping sets at 2-3 per exercise intentionally, training with high intensity close to failure each set. Progressively overloading over time.

My gym has limited equipment, so I couldn't add a few well known exercises. I have used the smith machine for squats and bench press till now, but feel I don't feel like using the smith machine anymore.

My primary areas of concern are:

  1. Is the chest volume enough? Like 3 sets of BP, 2 sets of flys, and 2 sets of incline BP enough for me?

  2. Are 4 sets of triceps and biceps accross the week enough?

  3. I did not include any rear delt exercises here. Should I slot it in and how?

  4. Is the leg volume too low?

Would love feedback on exercise selection, balance, and structure.

u/k_jm — 11 days ago

Thoughts on this Torso/Limbs split?

I feel like this split fixes one of the major drawbacks of U/L: arms often lagging behind other muscle groups. Tell me if there’s anything I should change about this

u/Deus_ex_machina3 — 2 days ago

Is This PPL Split Good for a Beginner Transitioning from Freehand Training and Bro Split?

Hey everyone, I wanted some honest feedback on whether my current PPL split is actually good or not for muscle growth.

I’m 22 years old, around 60 kg, and I have a skinny-fat physique although the fat is not that much...

For context:

I was on adaptive or freehand training for around 3 months (mostly bodyweight exercises and conditioning).

Then I spent about 2 months doing a bro split.

Recently, one of my friends shared this PPL routine with me, and since I’m a graphic designer, I tried to write it down properly and make it look a bit clean design it nicely too 😭

Now I’m wondering if this split is actually solid or if I should modify it.

A few things I wanted to ask:

Is doing only two exercises enough for proper bicep growth?

Is doing only two exercises enough for chest growth?

If I’m struggling to hit 12 reps with 5 kg on barbell curls, should I increase the weight anyway or first master 12 clean reps before progressing?

How long did it take you guys to notice visible changes on PPL?

How long should someone generally stick to the same PPL split before changing it?

Would genuinely appreciate honest opinions.

u/Intelligent-Talk-855 — 6 days ago