title: Immune responses to an upper body tri-set resistance training session.
abstract: The purpose of this study was to evaluate the acute immune responses to an upper body tri-set resistance training (RT) session in RT trained individuals. Eighteen young trained men (22·0 ± 1·8 years) were randomly assigned to an exercise group (EG; n = 9) or control group (CG; n = 9). The EG completed an acute tri-set RT protocol using two combinations of three exercises for the same muscle group with six to eight repetitions at 75% of one repetition maximum (1RM) for each exercise. Blood samples were collected before (Pre), and 15 min (Post) and 24 h (P24h) after the acute RT protocol to determine basal and acute total leucocytes and leucocyte subsets counting, interleukin-6 (IL-6), tumour necrosis factor-α (TNF-α) and cortisol. There were significant increases in total leucocytes, monocytes and neutrophils at Post as compared with Pre (P<0·05). Additionally, total leucocytes and monocytes were reduced even at P24h when compared to Pre (P<0·05). There were no significant changes in plasma concentrations of TNF-α, IL-6 and cortisol throughout the measured moments. As compared to CG, EG demonstrated very large effect sizes for total leucocytes, neutrophils and monocytes 15 min postprotocol and a reduction (trivial and small effect sizes) P24h. These results suggest that the tri-set RT session did not exacerbate the acute inflammatory response and might be a good option for variations in RT methods for trained individuals.
authors.affiliation: Exercise Physiology Laboratory - FISEX, School of Physical Education, University of Campinas (UNICAMP), Campinas, Brazil.
authors.forename: Diego T
authors.initials: DT
authors.lastname: Brunelli
authors.forename: Kaue
authors.initials: K
authors.lastname: Caram
authors.forename: Felipe R D
authors.initials: FR
authors.lastname: Nogueira
authors.forename: Cleiton A
authors.initials: CA
authors.lastname: Libardi
authors.forename: Jonato
authors.initials: J
authors.lastname: Prestes
authors.forename: Cláudia R
authors.initials: CR
authors.lastname: Cavaglieri
mesh_terms: D015415:Biomarkers / Q000097:blood; D001938:Brazil; D006801:Humans; D006854:Hydrocortisone / Q000097:blood; D007107:Immune System / Q000166:cytology / Q000378:metabolism / Q000502:physiology*; D015850:Interleukin-6 / Q000097:blood; D007958:Leukocyte Count; D007962:Leukocytes / Q000276:immunology; D008297:Male; D009000:Monocytes / Q000276:immunology; D009119:Muscle Contraction; D018482:Muscle, Skeletal / Q000502:physiology*; D009504:Neutrophils / Q000276:immunology; D055070:Resistance Training; D013997:Time Factors; D014409:Tumor Necrosis Factor-alpha / Q000097:blood; D034941:Upper Extremity; D055815:Young Adult
chemical_list: D015415:Biomarkers; C508600:IL6 protein, human; D015850:Interleukin-6; D014409:Tumor Necrosis Factor-alpha; D006854:Hydrocortisone
keywords: cytokines; inflammation; leucocytes; men; resistance exercise