Do trainers pay enough attention to posture adjustment when athletes perform strength exercises in a leg press machine?
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Abstract
The aim of this study was to analyse trainers’ appraisal of body posture adjustment -specifically joint alignment and flexion/extension of the legs- in athletes performing a leg press exercise. Ten strength trainers observed 15 video records of 15 athletes with no musculoskeletal problems. Kinematic analysis was based on motion capture data from athletes, combined with data from the semantic differential that trainers used to appraise joint alignment and flexion/extension. Multiple analysis of the two kinds of data showed that trainers’ appraisals did not always coincide with what the kinematic parameters indicated regarding the athletes’ posture adjustment while performing the leg press exercise.
Keywords: Leg press; posture adjustment appraisal; flexion parameters; flexion adjustment appraisal.
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