Effect of adding single-joint exercises to a multi-joint exercise resistance-training program on strength and hypertrophy in untrained subjects
| Autor: | Paulo Gentil, Saulo Martorelli, Martim Bottaro, Maria C. Pereira, André Martorelli, Rafael Cunha, Saulo Rodrigo, Sampaio Soares |
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| Rok vydání: | 2013 |
| Předmět: |
Gynecology
medicine.medical_specialty Nutrition and Dietetics Multi joint Physiology Upper body business.industry Endocrinology Diabetes and Metabolism Resistance training Resistance Training General Medicine Hypertrophy Bench press Muscle hypertrophy Physiology (medical) Isokinetic dynamometer Physical therapy medicine Humans Muscle Strength Elbow flexion business Muscle Skeletal Exercise Training period |
| Zdroj: | Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme. 38(3) |
| ISSN: | 1715-5320 |
| Popis: | The aim of this study was to examine the effect of adding single-joint (SJ) exercises to a multi-joint (MJ) exercise resistance-training program on upper body muscle size and strength. Twenty-nine untrained young men participated in a 10-week training session. They were randomly divided in 2 groups: the MJ group performed only MJ exercises (lat pulldown and bench press); the MJ+SJ group performed the same MJ exercises plus SJ exercises (lat pulldown, bench press, elbow flexion, and elbow extension). Before and after the training period, the muscle thickness (MT) of the elbow flexors was measured with ultrasound, and peak torque (PT) was measured with an isokinetic dynamometer. There was a significant (p < 0.05) increase in MT (6.5% for MJ and 7.04% for MJ+SJ) and PT (10.40% for MJ and 12.85% for MJ+SJ) in both groups, but there were no between-group differences. Therefore, this study showed that the inclusion of SJ exercises in a MJ exercise training program resulted in no additional benefits in terms of muscle size or strength gains in untrained young men. Resume : Cette etude se propose d'analyser l'effet de l'ajout d'exercices monoarticulaires (« SJ ») aun programme d'exercices polyarticulaires contre resistance sur la grosseur et la force des muscles du haut du corps. Vingt-neuf jeunes hommes non entraines participent aun programme d'entrainement d'une duree de 10 semaines. Deux groupes sont formes de facon aleatoire; l'un effectue seulement des exercices polyarticulaires (« MJ »: tirage-poitrine et developpe couche) et l'autre (MJ+SJ) effectue les memes exercices auxquels il ajoute des exercices monoarticulaires (flexion et extension du coude). Avant et apres la periode d'entrainement, on evalue l'epaisseur des muscles flechisseurs du coude (« MT ») par echographie et le moment de force de pointe (« PT ») au moyen d'un dynamometre isocinetique. D'apres les observations, les deux groupes presentent des augmentations significatives (p < 0,05) de MT (6,5% chez MJ et 7,04% chez MJ+SJ) et de PT (10,40% chez MJ et 12,85% chez MJ+SJ), et ce, sans differences significatives entre les groupes. En consequence, l'ajout d'exercices monoarticulaires aun programme d'entrainement polyarticulaire n'apporte aucun gain de volume musculaire et de force musculaire chez de jeunes personnes non entrainees. (Traduit par la redaction) Mots-cles : hypertrophie musculaire, exercice isole, volume d'entrainement, choix d'exercices, efficacite de l'entrainement. |
| Databáze: | OpenAIRE |
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