Chronic Effects of Different Rest Intervals Between Sets on Dynamic and Isometric Muscle Strength and Muscle Activity in Trained Older Women.
Am J Phys Med Rehabil
; 96(9): 627-633, 2017 Sep.
Article
en En
| MEDLINE
| ID: mdl-28145919
ABSTRACT
OBJECTIVE:
This study investigated the chronic effects of different rest intervals (RIs) between sets on dynamic and isometric muscle strength and muscle activity.DESIGN:
We used a repeated-measures design (pretraining and posttraining) with independent groups (different RI). Twenty-one resistance-trained older women (66.4 ± 4.4 years) were randomly assigned to either a 1-minute RI group (G-1 min; n = 10) or 3-minute RI group (G-3 min; n = 11). Both groups completed 3 supervised sessions per week during 8 weeks. In each session, participants performed 3 sets of 15 repetitions of leg press exercise, with a load that elicited muscle failure in the third set. Fifteen maximum repetitions, maximal voluntary contraction, peak rate of force development, and integrated electromyography activity of the vastus lateralis and vastus medialis muscles were assessed pretraining and posttraining.RESULTS:
There was a significant increase in load of 15 maximum repetitions posttraining for G-3 min only (3.6%; P < 0.05). However, posttraining results showed no significant differences between G-1 min and G-3 min groups for all dependent variables (P > 0.05).CONCLUSIONS:
The findings suggest that different RIs between sets did not influence dynamic and isometric muscle strength and muscle activity in resistance-trained older women.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Descanso
/
Factores de Tiempo
/
Fuerza Muscular
/
Entrenamiento de Fuerza
/
Contracción Isométrica
Tipo de estudio:
Clinical_trials
Límite:
Aged
/
Female
/
Humans
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Middle aged
Idioma:
En
Revista:
Am J Phys Med Rehabil
Asunto de la revista:
MEDICINA FISICA
/
REABILITACAO
Año:
2017
Tipo del documento:
Article
País de afiliación:
Brasil