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.

该子项目是利用该技术的众多研究子项目之一 资源由 NIH/NCRR 资助的中心拨款提供。子项目及 研究者 (PI) 可能已从 NIH 的另一个来源获得主要资金， 因此可以在其他 CRISP 条目中表示。列出的机构是 中心，不一定是研究者的机构。 高效跑步的能力对于许多运动的表现非常重要。先前的研究表明，有效行走的能力会增加行走的轻松度，从而增加自由生活的参与度和体重增加的可能性。因此，研究影响运动效率的因素非常重要。最近发现较长的腓肠肌腱长度与步行效率有关。理论上会发生这种情况，因为较长的肌腱在运动的早期支撑阶段会被拉伸得更多，因此在推进阶段会产生更大的力量。然而，许多其他因素，如肌纤维类型、强度和功率以及运动生物力学、有氧能力 (VO2max) 和身体成分可能会影响步行和跑步效率。因此，本研究的目的是评估非裔美国和白人男性跑步者的步行和跑步效率以及腓肠肌和髌腱长度。为了在评估肌腱运动效率时考虑其他潜在的混杂因素，将评估运动生物力学、有氧能力、身体成分、肌纤维类型、力量和功率。由于已知男性和女性在跑步表现和跑步经济性方面存在很大的性别差异，因此将招募 15 名非裔美国人和 15 名白人男性中长跑运动员，以匹配最佳 10 公里时间、年龄和身体成分，以便确保这两个变量的分布更加均匀。我们假设，即使在调整了潜在的混杂因素之后，腓肠肌和髌腱长度也将与步行和跑步效率独立相关。我们还假设非裔美国人步行和跑步的效率更高，并且比白人拥有更长的腓肠肌和髌腱。最后，我们假设在调整肌腱长度后，肌腱长度的差异会调节运动效率的差异。这项研究的结果对于理解跑步效率的差异非常重要，进而更好地理解可能影响运动表现、身体活动的难易程度、参与自由活动的身体活动以及最终体重增加倾向的因素。