Physiological responses during cycle ergometry at a constant perception of effort

K. C. Cochrane, T. J. Housh, H. C. Bergstrom, N. D.M. Jenkins, G. Johnson, R. J. Schmidt, Joel T Cramer

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

13 subjects performed an incremental test to exhaustion, 4,8-min submaximal rides, and a 1-h ride at the rating of perceived exertion (RPE) that corresponded to the physical working capacity at the OMNI threshold (PWCOMNI) to examine: 1) the oxygen consumption (VO2), heart rate (HR), minute ventilation (+VE), respiratory frequency (FR), and power output responses during 1-h work bouts at a constant RPE that corresponded to the PWCOMNI; and 2) the ability of current models to explain the responses for physiological and perceptual parameters during the 1-h work bouts. The RPE that corresponded to the PWCOMNI represented a sustainable exercise intensity (56±5% (VO2Peak) within the moderate-intensity domain. The mean, normalized slope coefficients for the VO2, +VE, and power output vs. time relationships during the 1-h rides were significantly less than zero. The mean, normalized slope coefficient for the FR vs.time relationship during the 1-h rides, however, was not significantly different from zero. Thus, RPE most clearly tracked FR responses during the 1-h rides. It was hypothesized that afferent feedback from respiratory muscles may have mediated the perception of effort during cycle ergometry at a constant RPE in the moderate-intensity domain.

Original languageEnglish (US)
Pages (from-to)466-473
Number of pages8
JournalInternational Journal of Sports Medicine
Volume36
Issue number6
DOIs
StatePublished - Feb 20 2015

Fingerprint

Ergometry
Respiratory Muscles
Aptitude
Oxygen Consumption
Ventilation
Heart Rate

Keywords

  • aerobic evulation
  • exercise intensity
  • feedback models
  • power output
  • RPE

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

Cite this

Cochrane, K. C., Housh, T. J., Bergstrom, H. C., Jenkins, N. D. M., Johnson, G., Schmidt, R. J., & Cramer, J. T. (2015). Physiological responses during cycle ergometry at a constant perception of effort. International Journal of Sports Medicine, 36(6), 466-473. https://doi.org/10.1055/s-0034-1396826

Physiological responses during cycle ergometry at a constant perception of effort. / Cochrane, K. C.; Housh, T. J.; Bergstrom, H. C.; Jenkins, N. D.M.; Johnson, G.; Schmidt, R. J.; Cramer, Joel T.

In: International Journal of Sports Medicine, Vol. 36, No. 6, 20.02.2015, p. 466-473.

Research output: Contribution to journalArticle

Cochrane, KC, Housh, TJ, Bergstrom, HC, Jenkins, NDM, Johnson, G, Schmidt, RJ & Cramer, JT 2015, 'Physiological responses during cycle ergometry at a constant perception of effort', International Journal of Sports Medicine, vol. 36, no. 6, pp. 466-473. https://doi.org/10.1055/s-0034-1396826
Cochrane KC, Housh TJ, Bergstrom HC, Jenkins NDM, Johnson G, Schmidt RJ et al. Physiological responses during cycle ergometry at a constant perception of effort. International Journal of Sports Medicine. 2015 Feb 20;36(6):466-473. https://doi.org/10.1055/s-0034-1396826
Cochrane, K. C. ; Housh, T. J. ; Bergstrom, H. C. ; Jenkins, N. D.M. ; Johnson, G. ; Schmidt, R. J. ; Cramer, Joel T. / Physiological responses during cycle ergometry at a constant perception of effort. In: International Journal of Sports Medicine. 2015 ; Vol. 36, No. 6. pp. 466-473.
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