Biomechanical Analyses of Bodyweight Unilateral Lower Limb Exercise Tasks - Comparison of Common Squatting and Lunging Movements

摘要

Bodyweight unilateral lower limb exercise tasks (BULLETs) are used in movement assessment and (re)training contexts. Since kinematic characteristics of individual BULLETs are different, it was hypothesized that lower extremity biomechanical loading patterns would differ between BULLETs. Thirty-two participants performed bodyweight forward lunges, backward lunges, split squats, single-leg squats, and double-leg squats. Body segment kinematics and ground reaction forces were used to quantify body-size normalized, lower limb net joint moments. Peak and average hip, knee, ankle, and total support moments differed across BULLETs (p < 0.05). Sex-based differences were observed for peak and average support moment, and peak knee moment (p < 0.05). Characterizing BULLETs based on joint moment magnitudes can be used to improve the sensitivity and specificity of movement assessments and to design movement (re)training programs. Further work is needed to address cause(s) of between-sex differences in joint moment magnitudes given that body size differences were not explanatory.