Metabolic consequences of resistive force selection during cycle ergometry exercise

Julien S. Baker, Michael R. Graham, Bruce Davies

Research output: Contribution to journalArticle

Abstract

The purpose of this study was to compare power outputs and blood lactate concentrations ([La−]B) following 30 s of maximal cycle ergometry when resistive forces were derived from total-body mass (TBM) or fat-free mass (FFM). Differences (P < 0.05) in peak power output (PPO), pedal velocity (PV) and resistive forces (RF) were observed when the TBM and FFM protocols were compared (953 ± 114 W vs. 1020 ± 134 W; 134 ± 8 rpm vs. 141 ± 7 rpm; 6 ± 1 kg vs. 5 ± 1 kg, respectively). Blood lactate values ([La−]B) increased (P < 0.01) postexercise for both protocols and were significantly greater for TBM (10.6 ± 1.2 mmol.l−1 vs 11.6 ± 1.1 mmol.l−1, P < 0.05). These findings indicate that the FFM resistive force protocol may maximise adenosinotriphosphate-phosphocreatine (ATP-PC) utilisation with smaller contributions from anaerobic glycolysis when compared with TBM. These results may have important implications in the assessment of high intensity exercise performance.
Original languageEnglish
Pages (from-to)1-11
Number of pages11
JournalResearch in Sports Medicine
Volume15
Issue number1
DOIs
Publication statusPublished - 6 Mar 2007
Externally publishedYes

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Ergometry
Fats
Lactic Acid
Phosphocreatine
Glycolysis
Foot

Keywords

  • high intensity exercise
  • blood lactate
  • body composition

Cite this

Baker, Julien S. ; Graham, Michael R. ; Davies, Bruce. / Metabolic consequences of resistive force selection during cycle ergometry exercise. In: Research in Sports Medicine. 2007 ; Vol. 15, No. 1. pp. 1-11.
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Metabolic consequences of resistive force selection during cycle ergometry exercise. / Baker, Julien S.; Graham, Michael R.; Davies, Bruce.

In: Research in Sports Medicine, Vol. 15, No. 1, 06.03.2007, p. 1-11.

Research output: Contribution to journalArticle

TY - JOUR

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AB - The purpose of this study was to compare power outputs and blood lactate concentrations ([La−]B) following 30 s of maximal cycle ergometry when resistive forces were derived from total-body mass (TBM) or fat-free mass (FFM). Differences (P < 0.05) in peak power output (PPO), pedal velocity (PV) and resistive forces (RF) were observed when the TBM and FFM protocols were compared (953 ± 114 W vs. 1020 ± 134 W; 134 ± 8 rpm vs. 141 ± 7 rpm; 6 ± 1 kg vs. 5 ± 1 kg, respectively). Blood lactate values ([La−]B) increased (P < 0.01) postexercise for both protocols and were significantly greater for TBM (10.6 ± 1.2 mmol.l−1 vs 11.6 ± 1.1 mmol.l−1, P < 0.05). These findings indicate that the FFM resistive force protocol may maximise adenosinotriphosphate-phosphocreatine (ATP-PC) utilisation with smaller contributions from anaerobic glycolysis when compared with TBM. These results may have important implications in the assessment of high intensity exercise performance.

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