PMID- 11915784 OWN - NLM STAT- MEDLINE DCOM- 20020910 LR - 20191105 IS - 1526-484X (Print) IS - 1526-484X (Linking) VI - 11 IP - 4 DP - 2001 Dec TI - Pre-exercise carbohydrate status and immune responses to prolonged cycling: II. Effect on plasma cytokine concentration. PG - 503-12 AB - Ingesting carbohydrate (CHO) beverages during heavy exercise is associated with smaller changes in the plasma concentrations of several cytokines. The influence of dietary CHO availability on these responses has not been determined. Therefore, the present study investigated the influence of pre-exercise CHO status on plasma interleukin (IL)-6, IL-10, and IL-1 receptor antagonist (IL-1ra) responses to prolonged cycling. Seven trained male cyclists performed a glycogen-lowering bout of cycling and were randomly assigned to follow a diet ensuring either greater than 70% (HIGH) or less than 10% (LOW) of daily energy intake from CHO for the next 3 days. On day 4 subjects performed an exercise test that comprised cycling for 1 hour at 60% Wmax immediately followed by a time-trial (TT) ensuring an energy expenditure equivalent to cycling for 30 min at 80% Wmax. Subjects repeated the protocol after 7 days, this time following the second diet. The order of the trials was counterbalanced. At 1 and 2 hours post-TT, plasma concentrations of IL-6 and IL-10 were 2-fold greater on the LOW trial than on the HIGH trial, and peak plasma concentrations of IL-1ra were 9-fold greater on the LOW trial than on the HIGH trial. These findings suggest that pre-exercise CHO status can influence the plasma cytokine response to prolonged cycling. FAU - Bishop, N C AU - Bishop NC AD - Department of Physical Education, Sports Science and Recreation Management at Loughborough University, UK. FAU - Walsh, N P AU - Walsh NP FAU - Haines, D L AU - Haines DL FAU - Richards, E E AU - Richards EE FAU - Gleeson, M AU - Gleeson M LA - eng PT - Clinical Trial PT - Journal Article PT - Randomized Controlled Trial PL - United States TA - Int J Sport Nutr Exerc Metab JT - International journal of sport nutrition and exercise metabolism JID - 100939812 RN - 0 (Blood Glucose) RN - 0 (Dietary Carbohydrates) RN - 0 (Interleukin-6) RN - 0 (Receptors, Interleukin-1) RN - 130068-27-8 (Interleukin-10) RN - 9005-79-2 (Glycogen) RN - WI4X0X7BPJ (Hydrocortisone) SB - IM MH - Adult MH - Beverages MH - Bicycling/*physiology MH - Blood Glucose/analysis/immunology MH - Dietary Carbohydrates/*administration & dosage MH - Glycogen/metabolism MH - Humans MH - Hydrocortisone/blood/immunology MH - Interleukin-10/*blood/immunology MH - Interleukin-6/*blood/immunology MH - Kinetics MH - Male MH - Nutritional Status MH - Receptors, Interleukin-1/*antagonists & inhibitors/immunology EDAT- 2002/03/28 10:00 MHDA- 2002/09/11 10:01 CRDT- 2002/03/28 10:00 PHST- 2002/03/28 10:00 [pubmed] PHST- 2002/09/11 10:01 [medline] PHST- 2002/03/28 10:00 [entrez] AID - 10.1123/ijsnem.11.4.503 [doi] PST - ppublish SO - Int J Sport Nutr Exerc Metab. 2001 Dec;11(4):503-12. doi: 10.1123/ijsnem.11.4.503.