Accelerometer Load as a Measure of Activity Profile in Different Standards of Netball Match Play

作者：Cormack Stuart J^*; Smith Renee L; Mooney Mitchell M; Young Warren B; O'Brien Brendan J

来源：International Journal of Sports Physiology and Performance, 2014, 9(2): 283-291.

DOI：10.1123/IJSPP.2012-0216

• microtechnology
• time motion
• team sport

Purpose: To determine differences in load/min (AU) between standards of netball match play. Methods: Load/min (AU) representing accumulated accelerations measured by triaxial accelerometers was recorded during matches of 2 higher- and 2 lower-standard teams (N = 32 players). Differences in load/min (AU) were compared within and between standards for playing position and periods of play. Differences were considered meaningful if there was >75% likelihood of exceeding a small (0.2) effect size. Results: Mean (+/-SD) full-match load/min (AU) for the higher and lower standards were 9.96 +/- 2.50 and 6.88 +/- 1.88, respectively (100% likely lower). The higher standard had greater (mean 97% likely) load/min (AU) values in each position. The difference between 1st and 2nd halves' load/min (AU) was unclear at the higher standard, while lower-grade centers had a lower (-7.7% +/- 10.8%, 81% likely) load/min (AU) in the 2nd half and in all quarters compared with the 1st. There was little intrastandard variation in individual vector contributions to load/min (AU); however, higher-standard players accumulated a greater proportion of the total in the vertical plane (mean 93% likely). Conclusions: Higher-standard players produced greater load/min (AU) than their lower-standard counterparts in all positions. Playing standard influenced the pattern of load/min (AU) accumulation across a match, and individual vector analysis suggests that different-standard players have dissimilar movement characteristics. Load/min (AU) appears to be a useful method for assessing activity profile in netball.

• 出版日期2014-3