VO2max对手球运动员7米投掷力学变量、乳酸浓度和投篮精度的影响

Ibtehal Alkhawaldeh
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引用次数: 0

摘要

本研究的目的是确定不同的最大摄氧量对手球运动员7米投掷的力学变量、乳酸浓度和投篮精度的影响。实验方法包括两个实验:一个是在实验室计算最大摄氧量,另一个是测试7米投掷的射击精度。共有36名手球运动员参加了本次研究,他们专门从事7米投球。按照训练年龄、最大摄氧量水平和休息时7米投掷的射击精度分成三组。平均年龄24.1±3.2岁,身高177±23 cm,体重72±4.3 kg。我们使用三台佳能Eos 80D相机,Scout Cortex乳酸设备和Kinovea 0.9.5软件进行性能评估。研究结果表明,多种最大摄氧量对手球运动员7米投的力学指标、乳酸浓度和投篮精度的影响具有统计学意义,且在显著水平上,最大摄氧量越大,其负向影响越大(α = 0.00)。根据这项研究的结果,研究人员建议手球教练努力提高球员的最大摄氧量水平,或者推迟球员达到更高的最大摄氧量水平,以避免血液中乳酸浓度的增加,从而降低球员7米投掷技能的能力。根据这项研究的结果,他们还应该考虑在比赛中使用暂停和换人,以确保球员的最大耗氧量不会达到65%。
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Impact of VO2max on mechanical variables, lactic acid concentration and shooting accuracy of the 7-meter throw among handball players
The aim of this study was to determine the effect of various VO2 max rates on mechanical variables, lactic acid concentration, and shooting accuracy of the 7-meter throw among handball players. The experimental method consisted of two experiments: one for calculating the VO2 max in the laboratory and another for testing the shooting accuracy of the 7-meter throw. A total of 36 handball players who specialized in shooting the 7-meter throw participated in the current study. They were divided into three equal groups in terms of training age, VO2 max level and the shooting accuracy of the 7-meter throw at rest time. Their average age was 24.1±3.2 years, their height was 177±23 cm, and their weight was 72±4.3 kg. We used three Canon Eos 80D cameras, a Scout Cortex lactate device, and Kinovea 0.9.5 software for performance evaluation. The study's results revealed a statistically significant effect of multiple rates of VO2 max on some mechanical variables, lactic acid concentration, and shooting accuracy of the 7-meter throw among handball players, with a negative effect that increases when the rates of VO2 max become greater at the level of significance (α = 0.00). In light of the study's results, the researcher advised handball coaches to work on increasing their players' VO2 max levels or delaying their players' access to higher levels of VO2 max to avoid an increase in the concentration of lactic acid in the blood and, as a result, a decrease in the players' abilities to perform the 7-meter throw skill. According to the results of this study, they should also consider the use of pauses and substitutions during matches to ensure that players do not reach levels of up to 65% of VO2 max.
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