Resumen de An Exemplar Frontal Plane Visual Kinematic Stimulus Elicits Sex-Specific Learned Behavior: An Exploratory Report
Jennifer A. Hogg, Christopher D. Riehm, Jed A. Diekfuss, Janet E. Simon, Shellie N. Acocello, Yu Liang, Dalei Wu, Gregory D. Myer, Gary B. Wilkerson
The purpose of this exploratory study was to determine if a visually delivered kinematic stimulus designed to promote injury-resistant biomechanics would induce sex-specific motor learning effects. Six female subjects and 6 male subjects participated in 2 consecutive day sessions in which they mimicked an avatar performing 5 sets of 8 repetitions of exemplar frontal plane mechanics during single-leg squats. Acute (~10 minutes) and delayed (~24 hours) transfer testing under single-task (single-leg balance) and dual-task conditions (single-leg balance plus cognitive task) were referenced to baseline measurements. Center of pressure (CoP) mean velocity (Vel), SD, and detrended fluctuation analysis (DFA) in the anterior posterior (AP) and medial-lateral (ML) directions were quantified, with dual-task costs defined as the percentage difference from single-task to dual-task. Separate 2 x 3 repeated-measures analysis of variance was conducted for each dual-task cost variable. Main effects and interactions with large effect sizes considered as >= 0.14 were further explored with pairwise post hoc comparisons. Sex by time interactions were observed for medial-lateral standard deviation cos
