The Claim
The physiological strength reserve of the back extensors, defined as maximal torque relative to upper body weight, is approximately 100% in both men and women, meaning back muscles can generate force equal to roughly twice their upper body weight.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Back muscles in men and women can produce a force equal to about twice their upper body weight, based on the ratio of maximum torque they generate to their upper body weight.
See the scientific wording
The physiological strength reserve of the back extensors—defined as maximal torque relative to upper body weight—is approximately 100% in both men and women, meaning back muscles can generate force equal to roughly twice their upper body weight.
The back muscles are large and positioned far from the spine's pivot point, allowing them to produce enough force to lift twice the weight of the upper body.
What the research says
1 studyThe study found that both men and women have back muscles strong enough to lift about twice their upper body weight — like being able to lift two of yourself — and this strength is about the same for both genders.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.