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  • 标题:The laboratory-assessed performance predictors of elite cross-country marathon mountain bikers
  • 本地全文:下载
  • 作者:Everton Crivoi do Carmo ; Renato Barroso ; Danilo Marcelo Leito do Prado
  • 期刊名称:Kinesiology
  • 印刷版ISSN:1331-1441
  • 出版年度:2021
  • 卷号:53
  • 期号:2
  • 页码:262-270
  • DOI:10.26582/k.53.2.9
  • 语种:English
  • 出版社:Faculty of Kinesiology
  • 摘要:The study aimed to investigate the relationship between laboratory-assessed variables and crosscountry marathon mountain biking (XCM-MTB) performance to suggest a more practical approach to monitor performance during the competitive phase. Nine elite athletes performed a battery of tests during the competitive phase of the season, one week before the race. Correlations between the physiological and neuromuscular laboratory-assessed variables and mean race completion time were verified and a multiple regression model was calculated. Cycling economy (r=0.86), power output at the first (POVT1; r=-0.73) and second ventilatory threshold (POVT2; r=-0.94), VO2peak (r=-0.71), peak power output (r=-0.91); peak power (r=-0.80), and mean power (r=-0.85) were very strongly related to race performance. TMG-derivate factors as rectus femoris (r=-0.61) and biceps femoris (r=-0.59) contraction velocity, 30-cm drop jump performance (r=-0.59), mean propulsive power in jump squat at 40% (JS40%; r=-0.65) and 60% (JS60%; r=-0.62) of athlete’s body weight and lower limbs maximal isometric voluntary strength (r=-0.59) were strongly related to race completion time. In an isolated way, the POVT2 explained 87% of race performance. Although both physiological and neuromuscular variables are related to XCM performance, the POVT2 seems to be the main variable during the competitive phase and an easy-to-apply approach should be used to monitor athletes’ performance.
  • 关键词:cycling;sports performance;muscle power;power output
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