Hamstrings
The three muscles on the back of the thigh (biceps femoris, semitendinosus, semimembranosus) responsible for knee flexion and hip extension. They drive running stride power, Sled Pull force, and provide eccentric control during Sandbag Lunges.
Definition
This is a resistance-training movement. Joint positions, range, tempo and load change the task, and several muscles contribute; the movement does not isolate one muscle.
OpenStax anatomical terminology · ACSM resistance-training position stand
Programming
Use a controlled, pain-free range and choose load, repetitions and progression for the individual goal and response. No fixed dose fits everyone, and this exercise does not guarantee injury prevention or HYROX® performance.
OpenStax anatomical terminology · ACSM resistance-training position stand
FAQ
Is there one correct technique or dose?
No. It depends on the task, goal, equipment and individual response.
OpenStax anatomical terminology · ACSM resistance-training position stand
Does one measurement prove an outcome?
No. Acute or field measures require context and do not establish long-term adaptation.
OpenStax anatomical terminology · ACSM resistance-training position stand
Does it guarantee HYROX® performance?
No. Exercise relevance does not guarantee individual race transfer.
OpenStax anatomical terminology · ACSM resistance-training position stand
Your hamstrings don't train themselves - and generic gym programs rarely target them for the endurance HYROX® demands. Repz looks at your race data to find the muscle groups limiting you, then programs station-specific work to strengthen them. Find Your Weak Station →
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