Carbohydrate supplementation and immune responses after acute exhaustive resistance exercise.
This investigation sought to study changes in leukocyte subsets after an acute bout of resistance exercise (ARE) and to determine whether ingestion of carbohydrate (CHO) could attenuate those immune responses. Nine male track-and-field athletes (21.1 +/- 1.4 yr, 177.2 +/- 5.5 cm, 80.9 +/- 9.7 kg, 8.7% +/- 3.8% fat) and 10 male ice hockey athletes (21.0 +/- 2.2 yr, 174.3 +/- 6.2 cm, 79.6 +/-11.1 kg, 13.9% +/- 3.73% fat) participated in 2 different ARE protocols. Both experiments employed a counterbalanced double-blind research design, wherein participants consumed either a CHO (1 g/kg body weight) or placebo beverage before, during, and after a weight-lifting session. Serum cortisol decreased (p < .05) at 90 min into recovery compared with immediately postexercise. Plasma lactate, total leukocyte, neutrophil, and monocyte concentrations increased (p < .05) from baseline to immediately postexercise. Lymphocytes decreased significantly (p < .05) from baseline to 90 min postexercise. Lymphocytes were lower (p < .05) for the CHO condition than for placebo. The findings of this study indicate the following: ARE appears to evoke changes in immune cells similar to those previously reported during endurance exercise, and CHO ingestion attenuates lymphocytosis after ARE.
Dept. of Natural Sciences, Castleton State College, Castleton, VT 05735, USA.
Lara A
LA
Carlson
Samuel
S
Headley
Jason
J
DeBruin
Alex T
AT
Tuckow
Alexander J
AJ
Koch
Robert W
RW
Kenefick
D000328:Adult; D001628:Beverages; D018592:Cross-Over Studies; D004040:Dietary Carbohydrates / Q000008:administration & dosage*; D004311:Double-Blind Method; D006801:Humans; D006854:Hydrocortisone / Q000097:blood; D007958:Leukocyte Count; D018655:Lymphocyte Count; D008218:Lymphocytosis / Q000276:immunology; D008297:Male; D010101:Oxygen Consumption / Q000502:physiology; D010807:Physical Endurance / Q000276:immunology* / Q000502:physiology*; D005082:Physical Exertion / Q000502:physiology*; D014891:Weight Lifting / Q000502:physiology
D004040:Dietary Carbohydrates; D006854:Hydrocortisone