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- Title
Effects of Loaded Squat Exercise with and without Application of Superimposed EMS on Physical Performance.
- Authors
Wirtz, Nicolas; Zinner, Christoph; Doermann, Ulrike; Kleinoeder, Heinz; Mester, Joachim
- Abstract
The aim of the present study was to investigate the effects of a multiple set squat exercise training intervention with superimposed electromyostimulation (EMS) on strength and power, sprint and jump performance. Twenty athletes from different disciplines participated and were divided into two groups: strength training (S) or strength training with superimposed EMS (S+E). Both groups completed the same training program twice a week over a six week period consisting of four sets of the 10 repetition maximum of back squats. Additionally, the S+E group had EMS superimposed to the squat exercise with simultaneous stimulation of leg and trunk muscles. EMS intensity was adjusted to 70% of individual pain threshold to ensure dynamic movement. Strength and power of different muscle groups, sprint, and vertical jump performance were assessed one week before (pre), one week after (post) and three weeks (re) following the training period. Both groups showed improvements in leg press strength and power, countermovement and squat jump performance and pendulum sprint (p < 0.05), with no changes for linear sprint. Differences between groups were only evident at the leg curl machine with greater improvements for the S+E group (p < 0.05). Common squat exercise training and squat exercise with superimposed EMS improves maximum strength and power, as well as jumping abilities in athletes from different disciplines. The greater improvements in strength performance of leg curl muscles caused by superimposed EMS with improvements in strength of antagonistic hamstrings in the S+E group are suggesting the potential of EMS to unloaded (antagonistic) muscle groups.
- Subjects
GERMANY; LEG physiology; TORSO physiology; ANALYSIS of variance; ANTHROPOMETRY; ATHLETIC ability; CLINICAL trials; ELECTRIC stimulation; EXERCISE physiology; EXERCISE tests; JUMPING; MUSCLE strength; MUSCLE strength testing; PROBABILITY theory; RESEARCH funding; RUNNING; STATISTICAL sampling; STATISTICS; DATA analysis; EFFECT sizes (Statistics); BODY movement; RANDOMIZED controlled trials; PRE-tests &; post-tests; REPEATED measures design; EXERCISE intensity; DATA analysis software; DESCRIPTIVE statistics; RESISTANCE training; INTRACLASS correlation
- Publication
Journal of Sports Science & Medicine, 2016, Vol 15, Issue 1, p26
- ISSN
1303-2968
- Publication type
Article