title: Influence of a 3-month training program on muscular damage and neutrophil function in male university freshman judoists.
abstract: We studied the effects of a high intensity and high frequency 3-month training program on muscle damage and neutrophil function in male judoists. The study included 15 male judoists who started intensive judo training program after a 6-month break. Creatine kinase (CK), neutrophil counts and reactive oxygen species (ROS) production capability as well as phagocytic activity (PA) of neutrophils were measured at 2 stages; entering university (pre-training) and after 3-month training (post-training). At both points, we investigated parameters three times: just before, immediately after and 24 h after a 2-h practice session. Practice-mediated change in CK was lower at post-training than at pre-training. Neutrophil count significantly increased after 2-h practice but recovered 24 h later whereas it showed no subsequent and further increased at 24 h post-practice. Although neutrophil ROS production capability and PA both decreased (breakdown) after practice session, ROS production capability increased and PA decreased (well-adapted) at the post-training. Long-term training strengthened muscular function and improved neutrophil reaction against practice-mediated stress.
authors.affiliation: Department of Social Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan.
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Koga
authors.forename: Takashi
authors.initials: T
authors.lastname: Umeda
authors.forename: Arata
authors.initials: A
authors.lastname: Kojima
authors.forename: Masaru
authors.initials: M
authors.lastname: Tanabe
authors.forename: Yousuke
authors.initials: Y
authors.lastname: Yamamoto
authors.forename: Ippei
authors.initials: I
authors.lastname: Takahashi
authors.forename: Hiroki
authors.initials: H
authors.lastname: Iwasaki
authors.forename: Kaori
authors.initials: K
authors.lastname: Iwane
authors.forename: Masashi
authors.initials: M
authors.lastname: Matsuzaka
authors.forename: Shigeyuki
authors.initials: S
authors.lastname: Nakaji
mesh_terms: D000328:Adult; D015444:Exercise / Q000502:physiology*; D006801:Humans; D007958:Leukocyte Count; D008297:Male; D016139:Martial Arts / Q000502:physiology*; D018482:Muscle, Skeletal / Q000502:physiology*; D009504:Neutrophils / Q000276:immunology*; D010587:Phagocytosis; D010807:Physical Endurance; D017382:Reactive Oxygen Species / Q000276:immunology; D055815:Young Adult
chemical_list: D017382:Reactive Oxygen Species