PERFORMANCE AND STRESS CHARACTERISTICS OF NCAA DIVISION 1 MEN'S VOLLEYBALL PLAYE

这个子项目是许多研究子项目中利用 资源由NIH/NCRR资助的中心拨款提供。子项目和 调查员(PI)可能从NIH的另一个来源获得了主要资金， 并因此可以在其他清晰的条目中表示。列出的机构是 该中心不一定是调查人员的机构。 随着一年多的训练、练习和比赛的需要，大多数高校运动队的典型情况是，各种运动或运动成绩测试的变化是疲劳、应激或成绩减退和提高的重要指标。这些测试可以帮助确定：1)是否达到了训练目标，2)是否需要改变短期运动处方或练习时间表需求(可能包括更多的休息和恢复时间)，以及3)是否需要改变长期训练周期。本研究的目的是全面了解NCAA甲级男排在9个月的时间里的表现和压力特征。加州大学欧文分校男子校际排球队的成员将被招募参加这项研究。将在季前赛(12月中旬)、季中赛(3月初)、季后赛(5月下旬)和暑假后(8月下旬)检查与排球运动成绩特别相关的运动能力。将在选定的时间采集禁食、运动前和运动后的血液样本，以检查完整的血细胞计数(CBC)、代谢(例如乳酸)、激素(例如皮质醇、生长激素、IGF-1)、免疫(例如细胞因子/趋化因子)、黏附分子和热休克蛋白指标，这些指标反映了这9个月期间发生的生理需求和压力，并对实际比赛做出了回应。将在选定的时间进行膝关节的DEXA测量和MRI评估，以分别评估身体成分和关节健康的变化。这将是迄今为止关于排球训练和比赛中生理和免疫反应的最彻底的研究，并将为这些学生运动员的身体发育和纵向变化提供独特的见解。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. With the demands of training, practice and competition over a year, typical of most collegiate athletic teams, the changes in various tests of athletic or sport performance are an important indicator of fatigue, stress or performance decrements and improvements. These tests can help to determine: 1) if training goals are being met, 2) if there is a need to change short-term exercise prescriptions or practice schedule demands (possibly incorporating more time for rest and recovery), and 3) if there is a need to alter long-term training cycles. The purpose of this study is to comprehensively identify performance and stress characteristics, over a 9-month period, of a NCAA Division 1 men's volleyball team. Members of the UC Irvine men's intercollegiate volleyball team will be recruited for this study. Measures of exercise ability particularly relevant to volleyball performance will be examined at pre-season (mid-December), mid-season (early March), post-season (late-May), and following summer break (late-August). Fasting, pre-exercise and post-exercise blood samples will be obtained at selected times to examine complete blood count (CBC), metabolic (e.g. lactate), hormonal (e.g. cortisol, growth hormone, IGF-1), immune (e.g. cytokines/chemokines), adhesion molecule, and heat shock protein indicators of the physiological demands and stress that occurs across this 9-month period, and in response to actual competition. DEXA measurements, and MRI assessments of the knees, will be conducted at selected times to evaluate changes in body composition and joint health, respectively. This will be the most thorough study to date on the physiological and immune response to volleyball training and competition, and will provide unique insights into the physical development and longitudinal changes in these student athletes.