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Revisiting ventilatory and cardiovascular predictions of whole-body metabolic rate

Journal Article


Abstract


  • Objective: The influence of variations in exercise mode, thermal state, and load carriage on cardiac and ventilatory predictors of metabolic rate were investigated.

    Methods: Fifteen males were studied at rest and during whole-, upper-, and lower-body exercise (unloaded and loaded) under thermoneutral and hot conditions.

    Results: Ventilatory predictions were superior in thermoneutral (residual mean square error range: 0.04 to 0.17 L·min-1 vs 0.21 to 0.36 L·min-1) and hot conditions (0.03 to 0.07 L·min-1 vs 0.21 to 0.24 L·min-1). Predictions derived from whole- or lower-body exercise, and unloaded or loaded exercise could be interchanged without significant error. Nevertheless, a mode-specific prediction was required for upper-body work, and mild hyperthermia significantly reduced the precision of cardiac predictions.

    Conclusion: Ventilatory predictions were more precise, but errors from heart-rate predictions could be minimized by using thermal-state and exercise mode-specific predictions.

UOW Authors


  •   Notley, Sean (external author)
  •   Fullagar, Hugh (external author)
  •   Lee, Daniel Steven. (external author)
  •   Matsuda-Nakamura, Mayumi (external author)
  •   Peoples, Gregory
  •   Taylor, Nigel A.S.. (external author)

Publication Date


  • 2014

Citation


  • Notley, S. R., Fullagar, H. H.K., Lee, D. S., Matsuda-Nakamura, M., Peoples, G. E. & Taylor, N. A.S. Revisiting ventilatory and cardiovascular predictions of whole-body metabolic rate. Journal of Occupational and Environmental Medicine. 2014; 56 (2): 214-223.

Scopus Eid


  • 2-s2.0-84894089047

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/2558

Number Of Pages


  • 9

Start Page


  • 214

End Page


  • 223

Volume


  • 56

Issue


  • 2

Abstract


  • Objective: The influence of variations in exercise mode, thermal state, and load carriage on cardiac and ventilatory predictors of metabolic rate were investigated.

    Methods: Fifteen males were studied at rest and during whole-, upper-, and lower-body exercise (unloaded and loaded) under thermoneutral and hot conditions.

    Results: Ventilatory predictions were superior in thermoneutral (residual mean square error range: 0.04 to 0.17 L·min-1 vs 0.21 to 0.36 L·min-1) and hot conditions (0.03 to 0.07 L·min-1 vs 0.21 to 0.24 L·min-1). Predictions derived from whole- or lower-body exercise, and unloaded or loaded exercise could be interchanged without significant error. Nevertheless, a mode-specific prediction was required for upper-body work, and mild hyperthermia significantly reduced the precision of cardiac predictions.

    Conclusion: Ventilatory predictions were more precise, but errors from heart-rate predictions could be minimized by using thermal-state and exercise mode-specific predictions.

UOW Authors


  •   Notley, Sean (external author)
  •   Fullagar, Hugh (external author)
  •   Lee, Daniel Steven. (external author)
  •   Matsuda-Nakamura, Mayumi (external author)
  •   Peoples, Gregory
  •   Taylor, Nigel A.S.. (external author)

Publication Date


  • 2014

Citation


  • Notley, S. R., Fullagar, H. H.K., Lee, D. S., Matsuda-Nakamura, M., Peoples, G. E. & Taylor, N. A.S. Revisiting ventilatory and cardiovascular predictions of whole-body metabolic rate. Journal of Occupational and Environmental Medicine. 2014; 56 (2): 214-223.

Scopus Eid


  • 2-s2.0-84894089047

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/2558

Number Of Pages


  • 9

Start Page


  • 214

End Page


  • 223

Volume


  • 56

Issue


  • 2