אימונים The Effect of Warm-Up With Whole-Body Vibration vs. Cycle Ergometry on Isokinetic Dyn

[Mike Bikov]

J Strength Cond Res. 2010 Oct 12. [Epub ahead of print]
The Effect of Warm-Up With Whole-Body Vibration vs. Cycle Ergometry on Isokinetic Dynamometry.

Kelly SB, Alvar BA, Black LE, Dodd DJ, Carothers KF, Brown LE.

1Human Performance Laboratory, Arizona State University, Polytechnic, Mesa, Arizona; and 2Human Performance Laboratory, California State University, Fullerton, California.
Abstract

Kelly, SB, Alvar, BA, Black, LE, Dodd, DJ, Carothers, KF, and Brown, LE. The effect of warm-up with whole-body vibration vs. cycle ergometry on isokinetic dynamometry. J Strength Cond Res 24(11): 3146-3149, 2010-The purpose of this study was to compare the effects of warm-up protocols using either whole-body vibration (WBV) or cycle ergometry (CE) on peak torque at 3 different isokinetic speeds and on fatigue in the knee extension exercise. Twenty-seven recreationally trained (age = 23.59 ± 3.87 years) men (n = 14) and women (n = 13) were tested at 3 different isokinetic speeds (60, 180, 300°·s) after either WBV or CE warm-up. The WBV consisted of intermittent bouts of 30 seconds of isometric squats at various degrees of hip and knee flexion for a total of 5 minutes. The CE consisted of 5 minutes of pedaling a cycle ergometer at 65-85% of age-predicted max heart rate. Comparisons between the warm-up conditions were analyzed using repeated measures analysis of variance. For the fatigue comparison, subjects completed 50 continuous concentric knee extensions at 240°·s. Means from the first 3 repetitions were compared to means from the final 3 repetitions to establish a fatigue index. Conditions were compared through an independent T-test. No significant (p > 0.05) differences were discovered between warm-up conditions at any speed or on the fatigue index. Means were virtually identical at 60°·s (WBV = 142.14 ± 43.61 ft lb; CE = 140.64 ± 42.72 ft lb), 180° s (WBV = 93.88 ± 35.18 ft lb; CE = 96.36 ± 31.53 ft lb), and 300°·s (WBV = 78.36 ± 26.04 ft lb; CE = 80.13 ± 26.08), and on fatigue percentage (WBV = 51.14 ± 10.06%; CE = 52.96 ± 9.19%). These data suggest that the more traditional 5-minute cycle ergometer warm-up elicits results comparable to a less common vibration warm-up. The findings of this study are that these modalities are comparable under the tested conditions.

PMID: 20940645 [PubMed - as supplied by publisher]​

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