title: Effects of a bout of traditional and original sumo training on neutrophil immune function in amateur university sumo wrestlers.
abstract: In order to examine in detail the influence on the neutrophil immune function in sumo wrestlers of performing traditional and original training we examined changes in the neutrophil immune function in 17 male amateur university sumo wrestlers (aged 20.2 +/- 1.5 years), before ('Pre') and after the training ('Post') for 2.5 h under fasting conditions. Assays included blood leukocyte and neutrophil counts, serum concentration of immunoglobulins, complements, myogenic enzymes and neutrophil oxidative burst activity (OBA) and phagocytic activity (PA). Myogenic enzymes, neutrophil counts, the ratio of neutrophil counts:leukocyte counts significantly increased and immunoglobulins and complements decreased in Post compared with Pre. There was a positive correlation between the change of neutrophil counts before and after the training and the change of creatine kinase (r = 0.667, p < 0.01). The Post OBA significantly increased and PA significantly decreased compared with Pre. It was concluded that sumo training causes muscular damage and an increase in the neutrophil count as a response. In this time, although OBA increased, PA decreased after training. Compensation between PA and reactive oxygen species production may exist to maintain the overall integrity of the neutrophil immune function.
authors.affiliation: Department of Social Medicine, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan. tume@cc.hirosaki-u.ac.jp
authors.forename: Takashi
authors.initials: T
authors.lastname: Umeda
authors.forename: Kazuo
authors.initials: K
authors.lastname: Saito
authors.forename: Masashi
authors.initials: M
authors.lastname: Matsuzaka
authors.forename: Shigeyuki
authors.initials: S
authors.lastname: Nakaji
authors.forename: Manabu
authors.initials: M
authors.lastname: Totsuka
authors.forename: Toshiki
authors.initials: T
authors.lastname: Okumura
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Tsukamoto
authors.forename: Makoto
authors.initials: M
authors.lastname: Yaegaki
authors.forename: Umi
authors.initials: U
authors.lastname: Kudoh
authors.forename: Ippei
authors.initials: I
authors.lastname: Takahashi
mesh_terms: D000328:Adult; D006801:Humans; D007109:Immunity / Q000502:physiology*; D008297:Male; D016139:Martial Arts; D018482:Muscle, Skeletal / Q000293:injuries; D009504:Neutrophils / Q000276:immunology*; D010587:Phagocytosis / Q000276:immunology; D017382:Reactive Oxygen Species / Q000276:immunology; D016897:Respiratory Burst / Q000276:immunology; D014495:Universities; D014952:Wrestling / Q000145:classification / Q000502:physiology*
chemical_list: D017382:Reactive Oxygen Species