An Exemplar Frontal Plane Visual Kinematic Stimulus Elicits Sex-Specific Learned Behavior: An Exploratory Report
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Jennifer A. Hogg [2] ; Christopher D. Riehm [3] ; Jed A. Diekfuss [1] ; Janet E. Simon [1] ; Shellie N. Acocello [2] ; Yu Liang [4] ; Dalei Wu [4] ; Gregory D. Myer [1] ; Gary B. Wilkerson [2]
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[1] Ohio University
Ohio University
Township of Athens, Estados Unidos
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[2] Department of Health and Human Performance, The University of Tennessee Chattanooga, Chattanooga, Tennessee
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[3] Emory Sports Performance And Research Center, Flowery Branch, Georgia
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[4] Emory Sports Medicine Center, Atlanta, Georgia
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- Localización: Journal of strength and conditioning research: the research journal of the NSCA, ISSN 1064-8011, Vol. 36, Nº. 3, 2022, págs. 857-861
- Idioma: inglés
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Resumen
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
