Carbohydrate attenuates perceived exertion during intermittent exercise and recovery

Alan C. Utter, Jie Kang, David C. Nieman, Charles L. Dumke, Steven R. McAnulty, Lisa S. McAnulty

Research output: Contribution to journalArticlepeer-review

Abstract

PURPOSE: The purpose of this study was to examine the effect of carbohydrate supplementation on differentiated and undifferentiated ratings of perceived exertion (RPE) during prolonged intermittent exercise and recovery. METHODS: Twelve male subjects cycled for 2.0 h at 64% Wmax and 73% V̇O2peak with 3-min rest intervals interspersed every 10 min (2.6 h of total exercise time, including rest intervals) with placebo (P) or carbohydrate (C) beverages. RPE was assessed during the last minute of each 10-min exercise interval and then every 30 s during the 3-min recovery period. RESULTS: The pattern of change in RPE over time was significantly different between C and P ingestion (P < 0.05), with attenuated RPE responses found for both overall body (O) and legs (L). A significant main effect was found for recovery RPE-O between C and P ingestion (P < 0.05), with attenuated RPE responses found in the later part of the 2-h run. C relative to P ingestion was associated with higher respiratory exchange ratios and plasma levels of glucose and with lower levels of plasma cortisol. CONCLUSIONS: These data indicate that carbohydrate supplementation attenuates perceived exertion during prolonged intermittent exercise and recovery.

Original languageEnglish
Pages (from-to)880-885
Number of pages6
JournalMedicine and Science in Sports and Exercise
Volume39
Issue number5
DOIs
StatePublished - May 2007

Keywords

  • Fatigue
  • Glucose
  • Rest interval
  • RPE

Fingerprint

Dive into the research topics of 'Carbohydrate attenuates perceived exertion during intermittent exercise and recovery'. Together they form a unique fingerprint.

Cite this