Changes in lymphocyte subpopulations after prolonged exercise.
In order to assess the changes in the cellular immune system, 27 healthy male subjects were selected who participate in leisure-time sports and in whom measurements of the lymphocyte subsets in venous blood were carried out before and after a standardized endurance exercise test (EI, 60 minutes in length, intensity: 63% of maximum performance). The percentages of the following parameters were measured: total T-lymphocytes, B-lymphocytes and O-lymphocytes as well as T4-lymphocytes (helper T-lymphocytes, CD4+) and T8-lymphocytes (cytotoxic/suppressor T-lymphocytes, CD8+). In a subgroup consisting of 8 subjects, the parameters indicated above were measured again 24 hours following E. In order to check the reproducibility of the findings, the endurance exercise test was repeated 21/2 weeks later (EII).
Ricken
K H
KH
Department of Sports and Performance Medicine, University of Saarland, Saarbrücken, FRG.
Rieder
T
T
Hauck
G
G
Kindermann
W
W
D000328:Adult; D001402:B-Lymphocytes / Q000276:immunology; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D006801:Humans; D007111:Immunity, Cellular / Q000276:immunology*; D007958:Leukocyte Count; D008214:Lymphocytes / Q000276:immunology*; D008297:Male; D015166:Monitoring, Immunologic; D013601:T-Lymphocytes / Q000276:immunology; D006377:T-Lymphocytes, Helper-Inducer / Q000276:immunology; D050378:T-Lymphocytes, Regulatory / Q000276:immunology