Acute Effects of Whole Body Vibrations on Balance and Flexibility Among College Age Males and Females (n-16)

Abstract Example: To be turned in with presentation to Dr. Pankey

Acute Effects of Whole Body Vibrations on Lower Back Static Strength. Robert B. Pankey, Jessica Jolly, John W. Ransone, & Tim W. Henrich, Texas State University, San Marcos, TX, OR University of the Incarnate Word, San Antonio, TX

Purpose: The purpose of this investigation was to determine whether light to moderate vibration (stochastic resonance), has an acute affect on maximal lower back static strength (lbs.) among male and female (n=14) college subjects. The Soloflex Corporation claims that performing stretching, callisthenic and weight lifting routines on their Whole Body Vibration Platform (WBVP) may magnify the conditioning effects and help promote faster muscle growth. Methods: Subjects performed a series of recommended flexibility exercises while positioned on the WBVP on alternate days with three trials at differing vibration intensities (0Hz-0g, 29Hz-.3g, 45Hz-.8g). Subjects performed a total of 14 recommended flexibility exercises, at 15 seconds per exercise, prior to having static lower back strength evaluated on a Lordex Spinal Rehabilitation System (LSRS). Mean lower back static strength from five differing back and hip angles were evaluated on six male and eight female college students who volunteered to participate in three randomized conditions. A repeated measures ANOVA (p<0.05) was used to determine whether vibrations from the WBVP elicited an acute effect on static lower back strength. Results: There were no significant differences on acute lower back static strength between experimental conditions of 0g's (139.67+11.99), 0.3g's (131.35+9.23) and 0.8g's (138+10.89), F2,26=0.99, p>.05. Conclusions: These results indicate that performance of flexibility exercises on the WBVP at differing vibration magnitudes did not have an acute effect on lower back static strength, as measured by the LSRS in this experiment. Non-significant findings in this investigation does not support advertised claims that strength will improve while performing flexibility exercises on a Soloflex WBVP system for 10 minutes a day.

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Hypothesis: Light to moderate vibration (stochastic resonance) with the Soloflex Lower Body Vibration system (WBVP) while performing flexibility exercises will have an acute affect on maximal lower back static strength (lbs.) among male and female (n=14) college students.

Descriptive Statistics:

n=14	Trial A	Trial B	Trial C
MEAN (lb)	139.67	131.35	138.27
ST ERR	11.99	9.23	10.9

Results: There were no significant differences on acute lower back static strength between experimental conditions of 0g's (139.67+11.99), 0.3g's (131.35+9.23) and 0.8g's (138+10.89), F2,26=0.99, p>.05. Conclusions: These results indicate that performance of flexibility exercises on the Soloflex WBVP at differing vibration magnitudes did not have an acute effect on lower back static strength, as measured by the LSRS in this experiment. Non-significant findings in this investigation does not support advertised claims that strength will improve while performing flexibility exercises on a WBVP system for 10 minutes a day.