Verdan, PJR, Marzilli, TS, Barna, GI, Roquemore, AN, Fenter, BA, Blujus, B, and Gosselin, KP. Effect of the Power Balance® band on static balance, hamstring flexibility, and arm strength in adults. J Strength Cond Res 26(8): 2113–2118, 2012—The purpose of this study was to determine the effect of Power Balance® bands on strength, flexibility, and balance. Strength and flexibility were measured using the MicroFit system. Strength was measured via a bicep curl and flexibility via the sit-and-reach method. Balance was measured by the BIODEX System SD. There were 4 different conditions for the balance test: eyes open on a firm surface (EOFS), eyes closed on a firm surface (ECFS), eyes open on a foam surface (EOFoS), and eyes closed on a foam surface (ECFoS). There were 24 subjects in the study (10 men and 14 women). A counterbalance, double-blind, placebo, controlled within-subject design was used. Each of the subjects participated in 3 treatment sessions, consisting of Power Balance®, placebo band, and no band. An alpha level of p ≤ 0.05 was set a priori. There were no significant differences in strength, flexibility, or balance with regard to the treatments used. There was a significant difference between the conditions in the balance test (p = 0.000): EOFS (0.51), ECFS (0.68), EOFoS (0.99), and ECFoS (2.18); however, these were independent of the treatment conditions. The results indicate that the Power Balance® bands did not have an effect on strength, flexibility, or balance.
Department of Health and Kinesiology, The University of Texas at Tyler, Tyler, Texas
Address correspondence to Dr. Thomas S. Marzilli, firstname.lastname@example.org.