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Effect of food intake on exercise fatigue in trained and untrained subjects

, : Effect of food intake on exercise fatigue in trained and untrained subjects. European Journal of Applied Physiology & Occupational Physiology 54(3): 297-300

The effects of carbohydrate and fat intake on exercise-induced fatigue was investigated in 30 untrained - (.ovrhdot.VO2max of 40.6 .+-. 2.7 ml .cntdot. kg-1 .cntdot. min-1) and 24 trained subjects (.ovrhdot.VO2max of 52.3 .+-. 2.7 ml .cntdot. kg-1 .cntdot. min-1) performing a 34 km march with a 25 kg backpack. Marching time was 81/2 h and 61/3 h in the untrained and trained-subjects respectively. The subjects were divided into 3 dietary groups. One group had free access to sugar cubes, the second group was offered almonds and the third one served as a control. Triglyceride levels decreased by 65 mg .cntdot. dl-1 in untrained, and by 115 mg .cntdot. dl-1 in trained subjects, while blood glucose remained at normal levels. In the untrained subjects, ingestion of almonds delayed the subjective sensation of exhaustion, while 50% of the controls and the sugar consuming subjects complained of exhaustion. The data suggest that ingestion of food containing fat delays exercise induced exhaustion or fatigue to a greater extent than does carbohydrate ingestion.

Accession: 005239823

PMID: 4065113

DOI: 10.1007/bf00426148

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