Reliability of measures obtained during single and repeated countermovement jumps.

  title={Reliability of measures obtained during single and repeated countermovement jumps.},
  author={Stuart J. Cormack and Robert Usher Newton and Michael R. McGuigan and Tim L. A. Doyle},
  journal={International journal of sports physiology and performance},
  volume={3 2},
PURPOSE To establish the reliability of various measures obtained during single and repeated countermovement jump (CMJ) performance in an elite athlete population. METHODS Two studies, each involving 15 elite Australian Rules Football (ARF) players were conducted where subjects performed two days, separated by one week, of AM and PM trials of either a single (CMJ1) or 5 repeated CMJ (CMJ5). Each trial was conducted on a portable force-plate. The intraday, interday, and overall typical error… 

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