PMID: 28515835May 19, 2017Paper

The Effect of Acute Hyperglycemia on Muscular Strength, Power and Endurance

International Journal of Exercise Science
Franklin Lime-MaEvan E Schick

Abstract

The purpose of this study was to elucidate the impact of acute hyperglycemia on skeletal muscle strength, power, and endurance. Ten male collegiate athletes (age 21.5 ± 1.5 years, height 186 ± 2.03 cm, body mass 108.8 ± 7.6 kg) participated in 2 testing sessions, separated by 7 days and randomized for either high glucose (HG) or control (C) treatment conditions. HG consumed a high glucose drink (2 g glucose/kg body weight) while controls consumed an isocaloric nutrition bar (40% protein, 30% fat, and 30% carbohydrate). Blood glucose (BC) levels for HG and C were tested at 0 (basal) and 30, 60, 90, and 120 minutes (mins) post consumption. At 30 mins post consumption, HG and C muscular strength was assessed by a 1RM bench press (BP) test followed by lower body power at 60 mins via vertical jump test. Muscular endurance was examined with a 3-set-to-failure BP test at 90 mins. HG exhibited significantly greater BC values (p<0.05) at the 30, 60, 90, and 120 minute time points. HG glucose area under the curve was significantly greater (p<0.05) than C and was positively correlated with %body fat, a finding that trended towards significance, r = 0.587, n= 10, p = 0.074. There were no between group differences in maximal strength, power...Continue Reading

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