The lactic acid after the match accumulates in the male Judo athletes of the lower percentage of skeletal muscle with over 90 kg

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  • Takashina Terue
    Graduate School of Literature and Social Sciences, Nihon University
  • Kushi Hidehiko
    Graduate School of Literature and Social Sciences, Nihon University
  • Fukada Kihachiro
    Graduate School of Literature and Social Sciences, Nihon University
  • Konno Jun
    College of Humanities and Sciences, Nihon University

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Other Title
  • 骨格筋率の低い90kg以上の男子柔道選手は試合後の乳酸が蓄積する
  • コッカクキンリツ ノ ヒクイ 90kg イジョウ ノ ダンシ ジュウドウ センシュ ワ シアイ ゴ ノ ニュウサン ガ チクセキ スル

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Abstract

<p>[Introduction] It’s reported that body fat percentage increases with increasing weight class, with an especially rapid increase in ≥90 kg classes. Therefore, we divided the participants into 2 groups, and we intended to clarify whether weight class and body composition influenced changes in blood lactate concentration before and after the judo match.</p><p>[Methods] This study included 15 men who were divided into 2 groups: <90 kg and ≥90 kg. Body composition was measured before the match, while heart rate and blood lactate concentration were measured before and 1, 10, and 20 min after the match.</p><p>[Results] Body fat percentage in ≥90 kg was significantly higher than <90 kg, while skeletal muscle percentage and extracellular fluid in <90 kg were significantly higher than ≥90 kg. Blood lactate concentration measured at 1 min after the match were significantly higher in ≥90 kg than in <90 kg. Weight and extracellular fluid was no significant difference. However, there was significant correlation between extracellular fluid and skeletal muscle percentage, and between skeletal muscle percentage and blood lactate measured 1 min after the match.</p><p>[Conclusions] The results of study are as follows: blood lactate concentrations measured just after the match were significantly higher in participants weighing ≥90 kg than in those weighing <90 kg, and a tendency to depend on a skeletal muscle rate for was recognized.</p>

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