RM-Loading Caution (Hamstring Curl & Stiff-Leg Deadlift)
Sources and review status
Review pending — this text hasn’t been signed off by a reviewer yet.
Historical reference: its only source is the original reference manual, and some of it may be out of date. Not used for AI answers until re-sourced.
See this lesson’s sources0% read · 1 min left
Some exercises require care in using RM (repetition-maximum) loading because of possible injury — for example the hamstring curl and stiff-leg deadlift.
Detail
Some exercises require care in using RM loading due to possible injury (e.g., hamstring curl, stiff-leg deadlift exercises). The development of a particular feature of muscular performance (absolute strength, etc.) is directly related to the load used, but for these exercises the near-maximal RM loads needed to push that feature carry elevated injury risk.
Related technique cautions: people often avoid stiff-legged deadlifts because they perform the hip-extension movement incorrectly, using too much lower-back movement (and rotation). The stiff-legged deadlift is nonetheless better than good mornings. For the incline leg curl, beware of knee hyperextension; the seated leg curl is a good substitute for the prone leg curl for those with lower-back problems.
Key facts
- Use care with RM loading on the hamstring curl and stiff-leg deadlift due to injury risk.
- Stiff-leg deadlift errors usually come from excess lower-back movement/rotation.
- Stiff-legged deadlift is preferred over good mornings.
- Incline leg curl: beware knee hyperextension.
- Seated leg curl substitutes for prone leg curl for those with lower-back problems.
Connections
- Repetition Maximum (RM) — the RM loading concept.
- Stiff-Legged Deadlift / Leg Curl (Hamstring Curl) — the cautioned exercises.
- Hamstrings — the muscle group loaded.
- Proper Form as Injury Prevention — proper form as injury prevention.
- Spotting Requirements — spotting heavy/failure sets.
Sources
Exercise guides
Topics like this depend on your health and history. A qualified coach or clinician can apply it to you safely.
Educational content only — not medical advice. Always consult a qualified professional for individualized guidance, especially around injury, pregnancy, or medical conditions.