Validation of an accelerometer for measuring sport performance.
Weightlifting technique is a well-studied subject with regard to standard biomechanical analysis that includes barbell velocity as well as barbell trajectory, but kinematic data such as barbell acceleration have not often been reported. Real-time or near-real-time feedback can be more helpful to coaches and athletes than delayed feedback. The purpose of this study was to validate measures obtained by a commercially available accelerometer in comparison with kinematic data derived from video. The hypothesis was that there would be a high positive relationship between accelerometer data and acceleration measures derived from video records of a barbell high-pull movement. Accelerometer values and kinematic data from high-speed video were obtained from 7 volunteers performing 2 trials each of a barbell high-pull. The results showed that the accelerometer measures were highly correlated with derived acceleration data from video (r = 0.94-0.99). On the basis of these results, the device was considered to be validated; thus, the unit may be a useful tool to measure acceleration during real-time training sessions rather than only reserved for collecting data in a laboratory setting. This device can be a valuable tool to provide instant feedback to coaches and athletes to assess individual barbell acceleration performance.
Sato
Kimitake
K
Department of Sport and Exercise Science, University of Northern Colorado, Greeley, Colorado, USA. jpnsatok@hotmail.com
Smith
Sarah L
SL
Sands
William A
WA
D000054:Acceleration; D000328:Adult; D054874:Athletic Performance / Q000502:physiology*; D001696:Biomechanical Phenomena; D004867:Equipment Design; D004869:Equipment Safety; D005080:Exercise Test / Q000295:instrumentation*; D006801:Humans; D018953:Kinesiology, Applied / Q000295:instrumentation; D008297:Male; D055070:Resistance Training / Q000295:instrumentation* / Q000379:methods; D012680:Sensitivity and Specificity; D014741:Video Recording; D014891:Weight Lifting / Q000502:physiology*; D055815:Young Adult