NDLI: Training and natural immunity: effects of diets rich in fat or carbohydrate

Content Provider	Springer Nature Link
Author	Pedersen, B. K. Helge, J. W. Richter, E. A. Rohde, T. Kiens, B.
Copyright Year	2000
Abstract	The purpose of the study was to investigate whether a carbohydrate-rich versus fat-rich diet influenced the effect of training on the immune system. Ten untrained young men ingested a carbohydrate-rich diet [65 energy percent (E%) carbohydrate] and ten subjects a fat-rich diet (62E% fat) while endurance training was performed 3–4 times a week for 7 weeks. Maximal oxygen uptake increased by 11% in both groups. Blood samples for immune monitoring were collected before and at the end of the study. Blood samples were also collected, in parallel, from 20 age-matched subjects, and data from these subjects were used to eliminate day-to-day variation in the immunological tests. Independently of diet, training increased the percentage of CD3–CD16+ CD56+ natural killer (NK) cells from [mean (SEM)] 14(1)% to 20 (3)% (P=0.05), whereas the NK-cell activity, either unstimulated or stimulated with interleukin (IL)-2 or interferon (IFN)-α, did not change. Furthermore, training did not influence the percentages of CD3+, CD4+, CD8+, CD19+ or CD14+ cells. However, when the two diet groups were compared, it was found that the NK-cell activity had increased in the group on the carbohydrate-rich diet [from 16 (3)% to 27 (2)%] and decreased in the group on the fat-rich diet [from 26 (2)% to 20 (4)%] in response to training. The effect of training on unstimulated NK-cell activity was significantly different between the groups (P=0.007). These data indicate that diet manipulation during training may influence natural immunity, and suggest that ingestion of a fat-rich diet during training is detrimental to the immune system compared to the effect of a carbohydrate-rich diet.
Starting Page	98
Ending Page	102
Page Count	5
File Format	PDF
ISSN	14396319
Journal	European Journal of Applied Physiology
Volume Number	82
Issue Number	1
e-ISSN	14396327
Language	English
Publisher	Springer-Verlag
Publisher Date	2000-05-15
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Physiology (medical) Public Health, Environmental and Occupational Health Sports Science

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