Safety bar v straight bar

[Jerome Scherrer]

I want to better understand why loading a safety bar has much less pain in knee flexion but also why can it be loaded with at least 4 plates more then a straight bar, is this due to torque = load x moment arm again and the profile being completely different, or just my biomechanics, I’m 6 foot 5

[Joe]

I want to better understand why loading a safety bar has much less pain in knee flexion but also why can it be loaded with at least 4 plates more then a straight bar, is this due to torque = load x moment arm again and the profile being completely different, or just my biomechanics, I’m 6 foot 5

[Jerome Scherrer]

Hey joe thanks for the reply, So I was injured in Afghanistan and had knee surgery left side.

so before lockdown I always used lower body machines

During lockdown I have been using a safety bar and a back squat

Safely bar I can load with 220kg and complete rep ranges from 6-9
Back squat I struggle to move 140kg with our massive knee pain and I struggle to get 10 reps

I use a 30 degree squat ramp on back squat and only use lifter rebook legacy with safety bar.

I just can’t work it out.

But I think your answer of hip flextion and the difference in the placement of the load on my body must be the noticeable factor

Love the app it’s great!!

[Joe]

Jerome Scherrer wrote:

Hey joe thanks for the reply, So I was injured in Afghanistan and had knee surgery left side.

so before lockdown I always used lower body machines

During lockdown I have been using a safety bar and a back squat

Safely bar I can load with 220kg and complete rep ranges from 6-9
Back squat I struggle to move 140kg with our massive knee pain and I struggle to get 10 reps

I use a 30 degree squat ramp on back squat and only use lifter rebook legacy with safety bar.

I just can’t work it out.

But I think your answer of hip flextion and the difference in the placement of the load on my body must be the noticeable factor

Love the app it’s great!!

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[Author]

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