Integrated Electromyography and Performance Outcomes to Inertial Resistance Exercise

• Autores: Kyoko Saito, John F. Caruso, Dan A. Hernández, Torrey Schweikert, Aaron Porter
• Localización: Journal of strength and conditioning research: the research journal of the NSCA, ISSN 1064-8011, Vol. 20, Nº. 1, 2006, págs. 151-156
• Idioma: inglés
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• Dialnet Métricas: 1 Cita
• Resumen

  • Caruso, J., D. Hernandez, A. Porter, T. Schweikert, K. Saito, M. Cho, N. De Garmo, and N. Nelson. Integrated electromyography and performance outcomes to inertial resistance exercise. J. Strength Cond. Res. 20(1): 151-156. 2006.-Integrated electromyography (IEMG) and performance outcomes from resistance exercise may be influenced by gender, repetition order, and contractile mode. A novel strength training apparatus employing inertial resistance operates unlike standard exercise equipment and may therefore evoke different IEMG and performance outcomes. Subjects performed 3-set, 10-repetition calf press workouts on an inertial device while IEMG and flywheel velocity were recorded. Dependent variables were examined with 2 (men, women) × 2 (first vs. 10th repetition) × 2 (concentric, eccentric) analyses of variance. Performance outcomes showed gender-by-repetition and gender-by-contractile-mode interactions, with men's 10th-repetition and men's concentric data, respectively, causing these effects. Medial gastrocnemius (MG) IEMG showed a gender-by-repetition interaction resulting from men's first-repetition data. Greater 10th-repetition performance despite higher first-repetition MG IEMG may result from heightened triceps surae elastic energy utilization and/or maintained cross-bridges during transitions from lengthening-to-shortening actions. Inertial strength training may improve performance outcomes without additional motor unit recruitment.