Efficacy of strength and conditioning training on dance injury, physical fitness and dance performance in Chinese pre-professional dancers

Purpose: To examine the effects of a strength and conditioning training intervention on dance injury, physical fitness and dance performance in Chinese pre-professional dancers. Study design: A prospective non-randomized controlled trial. Methods: A total of 89 full-time pre-professional dancers participated. Sixty-seven dancers volunteered for a 12-week strength and conditioning training intervention (2-session/week, 40-60-min/session), and 22 dancers acted as controls. All members of the intervention group carried out seven physical fitness tests pre- and post-intervention and a dance performance test using a ratified 10-item performance proficiency tool. Information on injury was self-reported by the dancers using a weekly remote dance injury monitoring tool. An inclusive definition of injury was used to record all injuries, even if they didn’t cause a cessation of training. Multivariate analysis of variance was employed to assess differences in physical fitness and dance performance pre and post-intervention. Injury data were initially analyzed for differences between the intervention and control groups; the intervention groups’ injury data were further analyzed by comparing to their own data collected during the previous year at the same period. Results: The intervention group demonstrated significant increases in physical fitness (p0.05). The intervention group also demonstrated lower weekly injury prevalence (28% vs 15%, p研究目的：探讨力量与体能训练干预对中国职业预备舞者的舞蹈损伤、身体素质及舞蹈表现的影响。 研究设计：前瞻性非随机对照试验。 研究方法：本研究共纳入89名全职职业预备舞者。其中67名舞者自愿参与为期12周的力量与体能训练干预（每周2次，每次40~60分钟），剩余22名舞者作为对照组。干预组所有受试者均在干预前后完成7项身体素质测试，并采用经认证的10项舞蹈表现熟练度评定工具完成舞蹈表现测试。舞者通过每周远程舞蹈损伤监测工具自行报告损伤相关信息，本研究采用包容性损伤定义以记录所有损伤，即便损伤未导致训练中断。本研究采用多变量方差分析，评估干预前后受试者的身体素质与舞蹈表现差异；损伤数据首先用于对比干预组与对照组的损伤差异，随后进一步将干预组的损伤数据与其前一年同期收集的自身数据进行对比分析。 研究结果：干预组身体素质显著提升（p0.05）。干预组的周损伤患病率亦更低（28% vs 15%，p