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Carbohydrate ingestion during prolonged high-intensity intermittent exercise: impact on affect and perceived exertion.
Scand J Med Sci Sports. 2007 Oct; 17(5):605-10.SJ

Abstract

This study was designed to determine the effects of ingesting a carbohydrate (CHO) solution on affective states and rating of perceived exertion (RPE) during prolonged intermittent high-intensity exercise. Seventeen male soccer players completed a prolonged intermittent high-intensity exercise protocol for 90 min on two occasions, separated by at least 7 days. Participants consumed either a 6.4% CHO (0.6 g/kg body mass (BM)/h) or an artificially sweetened placebo (PLA) solution immediately before (8 mL/kg BM) and every 15 min (3 mL/kg BM) during exercise in a double-blind, counterbalanced design. Pleasure-displeasure, perceived activation, RPE and plasma glucose concentration was assessed. The results showed that compared with the CHO trial, perceived activation were lower in the placebo trial during the last 30 min of exercise and this was accompanied by lowered plasma glucose concentrations. In the CHO trial, RPE was maintained in the last 30 min of exercise but carried on increasing in the PLA trial. Therefore, CHO ingestion during prolonged high-intensity exercise appears to elicit an enhanced perceived activation profile that may impact upon task persistence and performance. This finding is in addition to the physiological and metabolic benefits of the exogenous energy supply.

Authors+Show Affiliations

Carnegie Research Institute, Leeds Metropolitan University, Leeds, UK. s.backhouse@leedsmet.ac.ukNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17316376

Citation

Backhouse, S H., et al. "Carbohydrate Ingestion During Prolonged High-intensity Intermittent Exercise: Impact On Affect and Perceived Exertion." Scandinavian Journal of Medicine & Science in Sports, vol. 17, no. 5, 2007, pp. 605-10.
Backhouse SH, Ali A, Biddle SJ, et al. Carbohydrate ingestion during prolonged high-intensity intermittent exercise: impact on affect and perceived exertion. Scand J Med Sci Sports. 2007;17(5):605-10.
Backhouse, S. H., Ali, A., Biddle, S. J., & Williams, C. (2007). Carbohydrate ingestion during prolonged high-intensity intermittent exercise: impact on affect and perceived exertion. Scandinavian Journal of Medicine & Science in Sports, 17(5), 605-10.
Backhouse SH, et al. Carbohydrate Ingestion During Prolonged High-intensity Intermittent Exercise: Impact On Affect and Perceived Exertion. Scand J Med Sci Sports. 2007;17(5):605-10. PubMed PMID: 17316376.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Carbohydrate ingestion during prolonged high-intensity intermittent exercise: impact on affect and perceived exertion. AU - Backhouse,S H, AU - Ali,A, AU - Biddle,S J H, AU - Williams,C, Y1 - 2007/02/19/ PY - 2007/2/24/pubmed PY - 2008/1/9/medline PY - 2007/2/24/entrez SP - 605 EP - 10 JF - Scandinavian journal of medicine & science in sports JO - Scand J Med Sci Sports VL - 17 IS - 5 N2 - This study was designed to determine the effects of ingesting a carbohydrate (CHO) solution on affective states and rating of perceived exertion (RPE) during prolonged intermittent high-intensity exercise. Seventeen male soccer players completed a prolonged intermittent high-intensity exercise protocol for 90 min on two occasions, separated by at least 7 days. Participants consumed either a 6.4% CHO (0.6 g/kg body mass (BM)/h) or an artificially sweetened placebo (PLA) solution immediately before (8 mL/kg BM) and every 15 min (3 mL/kg BM) during exercise in a double-blind, counterbalanced design. Pleasure-displeasure, perceived activation, RPE and plasma glucose concentration was assessed. The results showed that compared with the CHO trial, perceived activation were lower in the placebo trial during the last 30 min of exercise and this was accompanied by lowered plasma glucose concentrations. In the CHO trial, RPE was maintained in the last 30 min of exercise but carried on increasing in the PLA trial. Therefore, CHO ingestion during prolonged high-intensity exercise appears to elicit an enhanced perceived activation profile that may impact upon task persistence and performance. This finding is in addition to the physiological and metabolic benefits of the exogenous energy supply. SN - 0905-7188 UR - https://www.unboundmedicine.com/medline/citation/17316376/Carbohydrate_ingestion_during_prolonged_high_intensity_intermittent_exercise:_impact_on_affect_and_perceived_exertion_ L2 - https://doi.org/10.1111/j.1600-0838.2006.00613.x DB - PRIME DP - Unbound Medicine ER -