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Abstract

Braun, W.A. (FACSM), Shippensburg University, Shippensburg PA

Purpose: To study the effects of Nordic ski training on post-exercise blood glucose (BG) clearance. Methods: Twenty-one (male = 10; female =11), competitive college Nordic skiers (age=19.14±1.3 yrs.; body fat %=14.9±6.2) completed two ski training conditions (high intensity: HI; and easy volume: VOL) and one resting control (CON) condition on separate days. At rest on the control day and upon completion of ski training, a 75 g oral glucose tolerance test (OGTT) was administered. BG was measured prior to the OGTT and at 20 min intervals for 80 min of passive rest. Hunger was assessed prior to the OGTT and at 40 and 80 min of rest via visual analog scale. Data were analyzed using a two-way ANOVA with repeated measures and one-way ANOVA (SPSS v. 19). Results: Significant time effects were present for BG. BG area under the curve (AUC) was significantly smaller following HI vs. CON, but not different from VOL (table). VOL AUC tended to be smaller than CON (p = 0.064). CON hunger was lower than VOL and tended to be lower than HI (p=0.064). BG measures (mg.dl-1) mean ± S.E. *Different from CON. All time points differ except the 20 and 40 min measures. Conclusion: Intensity of Nordic ski training appears to positively affect glucose clearance rates during recovery from exercise.

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