Reproducibility of maximal versus submaximal efforts in an isometric lumbar extension task.

@article{Robinson1991ReproducibilityOM,
  title={Reproducibility of maximal versus submaximal efforts in an isometric lumbar extension task.},
  author={Michael Edward Robinson and M Mac Millan and PATRICK O'CONNOR and Angela K Fuller and Jeffrey E. Cassisi},
  journal={Journal of spinal disorders},
  year={1991},
  volume={4 4},
  pages={444-8}
}
The purpose of this study was to investigate the differences in test-retest reliability between maximal and submaximal efforts in an isometric lumbar extension task and to test the hypothesis that submaximal efforts would be less consistent than maximal efforts. Twenty subjects were asked to produce maximum voluntary contractions at seven different positions in a lumbar extension machine. Each subject was tested twice in a maximal-effort condition and twice in a 50% effort condition. The order… CONTINUE READING

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