Effects of weight reduction on neutrophil phagocytic activity and oxidative burst activity in female judoists

Suzuki, Masahiro; Nakaji, Shigeyuki; Umeda, Takashi; Shimoyama, Tadashi; Mochida, Noriko; Kojima, Akira; Mashiko, Toshiyuki; Sugawara, Kazuo

doi:10.1002/bio.727

Cited by 45 publications

(42 citation statements)

References 22 publications

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“…the neutrophil ROS production capability, PA and SOA, have demonstrated a variety of results after acute/single bout exercise. ROS production has been reported to increase (1,(8)(9)(10)(11), decrease (1,10,(12)(13)(14)(15)(16) and remain unchanged (13,(17)(18)(19). PA significantly decreased after intense exercise (1,10,11,16,(19)(20)(21) or increased, or did not change with exercise (1,10,12,15,22).…”

Section: Introductionmentioning

confidence: 91%

The effects of a two‐hour judo training session on the neutrophil immune functions in university judoists

et al. 2008

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The present study examined the effects of judo training on neutrophil and related functions. We measured and studied changes in the neutrophil and its related functions in 22 male university judoists immediately before (Pre values) and immediately after (Post values) a 2 h training session: reactive oxygen species (ROS) production capability, phagocytic activities (PA) and serum opsonic activity (SOA). Neutrophil count in whole blood, myogenic enzymes (creatine kinase, lactate dehydrogenase, aspartate aminotransferase and alanine aminotransferase), immunoglobulins (IgG, IgA and IgM) and complements (C3 and C4) in serum were also measured. The Post values of the neutrophil count, myogenic enzymes and IgG increased significantly compared with the Pre values. ROS production capability and SOA also significantly increased following training, although PA showed a slight decrease (but not statistically significant). Taking the findings of our previous studies into consideration, three major neutrophil or related functions, namely ROS production capability, PA and SOA, might compensate for each other to maintain the overall integrity of the neutrophil immune function, in that ROS and SOA increased to compensate for the slight decrease in PA, or PA slightly decreased to compensate for the increase in ROA and SOA after exercise.

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Section: Introductionmentioning

confidence: 91%

The effects of a two‐hour judo training session on the neutrophil immune functions in university judoists

et al. 2008

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“…the neutrophil ROS production capability, phagocytic activity (PA) and serum opsonic activity (SOA), have demonstrated a variety of results after acute/single bout exercise. ROS production has been reported to increase (8)(9)(10)(11)(12), decrease (3,10,11,(13)(14)(15) and show no change (13,14,(17)(18)(19). PA significantly decreased after intense exercise (3,(10)(11)(12)(19)(20)(21) or increased or did not change with exercise (10,11,13,16,22).…”

Section: Introductionmentioning

confidence: 91%

Effects of a bout of traditional and original sumo training on neutrophil immune function in amateur university sumo wrestlers

Umeda¹,

Saito²,

Matsuzaka³

et al. 2008

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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.

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“…However, instead of broadening the discussion with contrasting evidence, Dr Davis has chosen to criticise our choice of reference. To strengthen our argument, we wish to highlight a further seven studies which show impairment of selected parameters of immune function following RWL [20][21][22][23][24][25][26]. Furthermore, an increased incidence of upper respiratory tract infection due to RWL was reported in at least two studies [24,25], and confirmed by data from our own group which is currently under review.…”

Section: Dear Editormentioning

confidence: 55%

Authors’ Reply to Davis: “It is Time to Ban Rapid Weight Loss from Combat Sports”

Artioli

Saunders

Iglesias³

et al. 2017

Sports Med

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Effects of weight reduction on neutrophil phagocytic activity and oxidative burst activity in female judoists

Cited by 45 publications

References 22 publications

The effects of a two‐hour judo training session on the neutrophil immune functions in university judoists

The effects of a two‐hour judo training session on the neutrophil immune functions in university judoists

Effects of a bout of traditional and original sumo training on neutrophil immune function in amateur university sumo wrestlers

Authors’ Reply to Davis: “It is Time to Ban Rapid Weight Loss from Combat Sports”

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