Kinematics and Kinetics of 2 Styles of Partial Forward Lunge
in Journal of Sport RehabilitationClick name to view affiliation
Objective:
To evaluate the anterior shift of the body’s center of gravity (CG) and the associated inertial forces produced by 2 styles of a partial forward lunge.
Setting:
Gait-analysis laboratory of a research institution.
Participants:
10 healthy volunteers.
Intervention:
3 trials of each lunge.
Main Outcome Measures:
Kinematic data were collected, and inertial reaction forces were resolved into net compressive and shear forces using an inverse dynamic model.
Results:
Significantly (P < .001) greater anterior translation of the CG was found with an arms-in-front v arms-across-chest lunge style. No significant differences were found between the average peak inertial compressive and shear forces of the 2 styles (427 ± 184 N v 426 ± 187 N, −536 ± 113 N v −538 ± 127 N).
Conclusion:
Anterior translation of the CG was larger with the arms-forward partial-lunge position, creating increased balance demands. Both styles produced clinically safe (posteriorly directed) inertial shear forces, with greater anterior CG shift with the arms-forward style.
Wilson and Masterson are with the Dept of Health, Physical Education and Recreation, Missouri State University, Springfield, MO 65897. Gibson is with the Dept of Physical Therapy, University of Missouri–Columbia, Columbia, MO 65211.
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