Effects of ingesting low glycemic index carbohydrate food for the sahur meal on subjective, metabolic and physiological responses, and endurance performance in Ramadan fasted men

Weileen Png, Kalpana Bhaskaran, Andrew J. Sinclair, Abdul Rashid Aziz

Research output: Contribution to journalArticleResearchpeer-review

6 Citations (Scopus)

Abstract

Purpose: To investigate the effect of low glycemic index (LGI) carbohydrate meal on subjective, metabolic and physiological responses, and endurance performance in the Ramadan fasted state. Methods: During Ramadan, 12 Muslim men, in a randomized and crossover design, ingested for the sahur meal (i.e. last meal before commencement of the day's fast), either LGI (glycemic index = 37) or mixed (CON; ∼57) meal of equivalent macro-nutrient. At ∼12 h post-prandial, subjects completed a 60 min continuous run. Results: There were no significant differences between the two meals for ratings in perceived satiety, fullness, appetite and mood states. During steady-state exercise, there were no significant differences in metabolic and physiological measures. In the time-trial, distance ran was significantly lower in LGI versus CON meal trial, but with a corresponding lower perceived exertion in the LGI trial. Conclusion: Compared to CON, ingesting LGI as the sahur meal did not provide any metabolic, physiological or performance benefits during endurance run performed 12 h post-prandial in Ramadan fasted state.

Original languageEnglish
Pages (from-to)629-636
Number of pages8
JournalInternational Journal of Food Sciences and Nutrition
Volume65
Issue number5
DOIs
Publication statusPublished - 1 Jan 2014
Externally publishedYes

Keywords

  • Blood glucose concentration
  • Exercise
  • Perceived exertion
  • Religious fast
  • Satiety

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