Cited by 233Exercise and Physiological ResponsesMuscle metabolism and nutritionSports Performance and Training

Influence of mode and carbohydrate on the cytokine response to heavy exertion

NIEMAN, DAVID C., NEHLSEN-CANNARELLA, SANDRA L., FAGOAGA, OMAR R., HENSON, DRU A., UTTER, ALAN, DAVIS, J. MARK, WILLIAMS, FRANKLIN, BUTTERWORTH, DIANE E.·1998·Medicine & Science in Sports & Exercise

Abstract

OBJECTIVE AND METHODS: This randomized, double-blind, placebo-controlled study was designed to determine the influence of exercise mode and 6% carbohydrate (C) versus placebo (P) beverage ingestion, on blood cell counts, plasma glucose, hormone, and inflammatory cytokine responses (five total samples over 9 h) to 2.5 h of high-intensity running and cycling (approximately 75% VO2max) by 10 triathletes who acted as their own controls. Statistical significance was set at P < or = 0.05. RESULTS: C relative to P ingestion (but not exercise mode) was associated with higher plasma levels of glucose and insulin, lower plasma cortisol and growth hormone, and diminished perturbation in blood immune cell counts. The pattern of change over time for interleukin (IL)-6 was significantly different between C and P conditions (P = 0.021) and between running and cycling modes (P < 0.001), with the lowest postexercise values seen in the C-cycling sessions (10.7 +/- 1.8 pg x mL(-1)) and the highest in the P-running sessions (51.6 +/- 14.2 pg x mL(-1)). The pattern of change over time between C and P conditions (but not modes) was significantly different for IL-1 receptor antagonist (P = 0.003), with values once again lowest for the C-cycling sessions (1.5 h postexercise, 301 +/- 114 pg x mL(-1)) and highest for the P-running sessions (1171 +/- 439 pg x mL(-1)). CONCLUSION: These data indicate that carbohydrate versus placebo ingestion (4 mL x kg(-1) carbohydrate or placebo every 15 min of the 2.5-h exercise bout) is associated with higher plasma glucose levels, an attenuated cortisol response, and a diminished pro- and anti-inflammatory cytokine response.

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Crossref · 10.1097/00005768-199805000-00005

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Authors
NIEMAN, D. C., NEHLSEN-CANNARELLA, S. L., FAGOAGA, O. R., HENSON, D. A., UTTER, A., DAVIS, J. M., WILLIAMS, F., & BUTTERWORTH, D. E.
Affiliations
Loma Linda University Medical Center (US)
Venue
Medicine & Science in Sports & Exercise
Published
1998-05
Volume
30
Issue
5
Pages
671-678
ISSN
0195-9131 (ISSN-L)
OpenAlex
W1988501271
Cited by
233
References
24
Citations by year
2026: 3 · 2025: 2 · 2024: 1 · 2023: 7 · 2022: 5 · 2021: 5 · 2020: 4 · 2019: 9 · 2018: 6 · 2017: 6 · 2016: 11 · 2015: 10 · 2014: 10 · 2013: 11 · 2012: 10
FWCI
16.25
Type
journal article
Language
en
Open access
closed
Locations
  • Medicine & Science in Sports & Exercise (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
Keywords
carbohydrate intake, exercise mode, high-intensity running, cycling, heavy exercise, inflammatory cytokines, interleukin-6, interleukin-1 receptor antagonist, cortisol, insulin, plasma glucose, immune cell counts, triathletes, exercise immunology
MeSH terms
Adult, Beverages, Bicycling, Blood Glucose, Carbohydrates, Double-Blind Method, Female, Humans, Hydrocortisone, Male, Middle Aged, Physical Endurance, Running, Cytokines

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