Effect or bracelets on sports performance

NewsBot · Apr 9, 2014

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The Effect of a Negative Ion Holographic Bracelet on Maximal Aerobic Performance
Sells, Patrick D; Cavicchio, Hannah; Everhart, Brittney; Grass, Brandon; lambert, Jonathan; Robinson, Kevin
Journal of Strength & Conditioning Research: POST ACCEPTANCE, 7 April 2014

The purpose of this study was to investigate the effect of performance jewelry imbedded with both a hologram and negative ions on maximal oxygen uptake (VO2max), VO2 at ventilatory threshold (VO2VT), or heart rate at ventilatory threshold (HRVT) measured via metabolic gas exchange. Eight males and 10 females (age = 26.5 +/-7.18 years) volunteered to participate in this study. Silicone bracelets with both hologram technology and negative ions were utilized as the 'programmed' device. An identical silicone bracelet which did not contain the negative ion or hologram technology was utilized as the 'non-programmed' device. A third condition in which the participants did not wear a band served as a control trial. The type of band worn during testing sessions was blinded from the participants and researchers. The order of testing was randomized. Subjects underwent three Maximal Graded Exercise Tests separated by one week. A repeated measures ANOVA was used to test for mean differences across the three trials. The mean VO2max when wearing the programmed band (52.32 +/- 4.79 ml[middle dot]kg-1[middle dot]min-1), when wearing the non-programmed band (51.47 +/- 5.89), and without a band (53.32 +/- 7.63 ml[middle dot]kg-1[middle dot]min-1) were found to be of no significant difference (p = 0.494). Assessment of the subjects HRVT under the three conditions (programmed, non-programmed, no band) yielded no significant difference (p = 0.633). The HRVT were 136.06 +/- 16.33, 135.00 +/- 19.48, and 130.41 +/- 24.39 respectively. The VO2VT for the programmed band (30.04 +/- 6.91 ml[middle dot]kg-1[middle dot]min-1), non-programmed (30.77 +/- 8.125 ml[middle dot]kg-1[middle dot]min-1), and no band (27.27 +/- 8.66 ml[middle dot]kg-1[middle dot]min-1) were not significantly different (p = 0.221). The results of this study provide data that holographic and negative ion technology wristbands may have no effect on VO2max, VO2 at ventilatory threshold, or heart rate at ventilatory threshold, and thus may have no positive effect on exercise endurance.
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Admin2 · Apr 9, 2014

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