RELATIONSHIP BETWEEN RUNNING ECONOMY AND TENDON LENGTH

跑步经济性与肌腱长度之间的关系

• 批准号: 7603244
• 负责人: GARY R HUNTER
• 金额: $ 0.19万
• 依托单位: UNIVERSITY OF ALABAMA AT BIRMINGHAM
• 依托单位国家: 美国
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-03-01 至 2008-02-29
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7603244
• 关键词: Accounting; Aerobic; Affect; African American; Age; Athletic; Biomechanics; Body Composition; Caucasians; Caucasoid Race; Computer Retrieval of Information on Scientific Projects Database; Female; Funding; Grant; Institution; Length; Life; Locomotion; Mediating; Muscle Fibers; Numbers; Performance; Phase; Physical activity; Purpose; Recruitment Activity; Research; Research Personnel; Resources; Running; Sex Characteristics; Source; Sports; Stretching; Tendon structure; Time; United States National Institutes of Health; Walkers; Walking; Weight Gain; male

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. The ability to run efficiently is important for performance in a number of sports. Previous research suggests that the ability to walk efficiently increases the ease of walking and thus, increases free-living participation and the likelihood of gain weight. It is therefore important to study factors that influence efficiency of locomotion. Longer gastrocnemius tendon lengths have recently been found to be related to walking efficiency. This would theoretically occur because a longer tendon will be stretched more during the early support phase of locomotion and as a result, develop more force during the propulsive phase. However, a number of other factors such as muscle fiber type, strength, and power as well as locomotion biomechanics, aerobic capacity (V02max) and body composition may impact walking and running efficiency. Therefore, the purpose of this study is to evaluate the walking and running efficiency and gastrocnemius and patellar tendon lengths of African American and Caucasian male runners. In order to account for other potential confounders when evaluating the tendon-locomotion efficiency locomotion biomechanics, aerobic capacity, body composition, muscle fiber type, strength, and power will be evaluated. Because gender difference in running performance and running economy are known to be large between males and females, fifteen African-American and fifteen Caucasian male middle distance runners will be matched for best 10 kilometer time, age, and body composition will be recruited in order to insure a more homogenous distribution of these two variables. We hypothesize that gastrocnemius and patellar tendon lengths will be independently related to both walking and running efficiency even after adjusting for potential confounders. We also hypothesize that African Americans will be more efficient walkers and runners and will have longer gastrocnemius and patellar tendons than Caucasians. Finally, we hypothesize that after adjusting for tendon length the differences in tendon length mediate differences in locomotion efficiency. The results of this study will be important in understanding differences in running efficiency and in turn developing a better understanding of factors that may affect athletic performance, ease of being physically active, participation in free-living physical activity and finally propensity for weight gain.

该副本是利用众多研究子项目之一 由NIH/NCRR资助的中心赠款提供的资源。子弹和 调查员（PI）可能已经从其他NIH来源获得了主要资金， 因此可以在其他清晰的条目中代表。列出的机构是 对于中心，这不一定是调查员的机构。 有效跑步的能力对于许多运动中的表现很重要。先前的研究表明，行走的能力有效地提高了步行的便利性，从而增加了自由生活的参与和体重增加的可能性。因此，研究影响运动效率的因素很重要。最近发现胃肌腱长度较长与步行效率有关。从理论上讲，这是因为在运动的早期支撑阶段将更长的肌腱拉伸，因此，在推进阶段会产生更多的力。但是，许多其他因素，例如肌肉纤维类型，力量和功率以及运动生物力学，有氧运动能力（V02MAX）和身体成分可能会影响步行和跑步效率。因此，这项研究的目的是评估非裔美国人和高加索男性跑步者的步行和跑步效率以及甲壳虫和pat肌肌腱的长度。为了评估肌腱 - 局部效率运动生物力学，有氧运动能力，身体成分，肌肉纤维类型，强度和力量时，将评估其他潜在的混杂因素。由于众所周知，男性和女性之间的性别差异很大，因此将招募15名非裔美国人和15名高加索男性中间距离跑步者，将在最佳的10公里时间，年龄，身体成分中匹配，以确保这两种变量的分布更加本质。我们假设，即使在调整了潜在的混杂因素后，胃肌和pat肌肌腱长度也将与步行和跑步效率独立相关。我们还假设非洲裔美国人将是更有效的步行者和跑步者，并且比高加索人更长的腹膜肌和pat肌肌腱。最后，我们假设在调整肌腱长度后，肌腱长度的差异介导运动效率的差异。这项研究的结果对于理解跑步效率的差异将很重要，进而对可能影响运动表现，易于体育锻炼，参加自由生活的体育活动以及最终体重增加的因素有更好的理解。