Title |
Reliability and Validity of a Medicine Ball–Contained Accelerometer for Measuring Upper-Body Neuromuscular Performance
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Published in |
Journal of Strength & Conditioning Research, July 2018
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DOI | 10.1519/jsc.0000000000002470 |
Pubmed ID | |
Authors |
Gregory Roe, William Shaw, Joshua Darrall-Jones, Padraic J Phibbs, Dale Read, Jonathon J Weakley, Kevin Till, Ben Jones |
Abstract |
The aim of the study was to assess the between-day reliability and validity of a medicine ball contained-accelerometer (MBA) for assessing upper-body neuromuscular performance during a throwing task. Ten professional rugby union players partook in the study. Between-day reliability was assessed from the best score attained during 2 sets of 3 throws, on 2 testing occasions separated by 7 days. Validity was assessed against a criterion measure (Optioelectronic system) during 75 throws from a sub group of three participants. The MBA exhibited a small between-day error of 2.2 % (90% CI's; 2.0 to 4.6 %) and an almost perfect relationship with a criterion measure r = 0.91 (90% CI's; 0.87 to 0.94)). However, the mean bias and standard error were moderate (7.9% (90% CI's; 6.6 to 9.2%) and 4.9% (90% CI's; 4.2 to 5.7%) respectively). Practitioners using an MBA to assess neuromuscular performance of the upper-body must take into account the overestimation and error associated with such assessment with respect to a criterion measure. However, as the error associated with between-day testing was small, and testing is easy to implement in applied practice, an MBA may provide a useful tool for monitoring upper-body neuromuscular performance over time. |
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