التفاصيل البيبلوغرافية
| العنوان: |
Impact of Center-of-Mass Acceleration on the Performance of Ultramarathon Runners. |
| المؤلفون: |
Shun-Ping Lin, Wen-Hsu Sung, Fon-Chu Kuo, Kuo, Terry B. J., Jin-Jong Chen |
| المصدر: |
Journal of Human Kinetics; 2014, Vol. 44, p41-52, 12p, 1 Color Photograph, 4 Charts, 1 Graph |
| مصطلحات موضوعية: |
CENTER of mass, PHYSIOLOGICAL effects of acceleration, ULTRAMARATHON running, RUNNING speed, ACCELEROMETERS, PHYSIOLOGY |
| مستخلص: |
Ultramarathon races are rapidly gaining popularity in several countries, raising interest for the improvement of training programs. The aim of this study was to use a triaxial accelerometer to compare the three-dimensional center-of- mass accelerations of two groups of ultramarathon runners with distinct performances during different running speeds and distances. Ten runners who participated in the 12-h Taipei International Ultramarathon Race underwent laboratory treadmill testing one month later. They were divided into an elite group (EG; n = 5) and a sub-elite group (SG; n = 5). The triaxial center-of-mass acceleration recorded during a level-surface progressive intensity running protocol (3, 6, 8, 9, 10, and 12 km/h; 5 min each) was used for correlation analyses with running distance during the ultramarathon. The EG showed negative correlations between mediolateral (ML) acceleration (r = −0.83 to −0.93, p < 0.05), and between anterior–posterior (AP) acceleration and running distance (r = −0.8953 to −0.9653, p < 0.05), but not for vertical control of the center of mass. This study suggests that runners reduce stride length to minimize mediolateral sway and the effects of braking on the trunk; moreover, cadence must be increased to reduce braking effects and enhance impetus. Consequently, the competition level of ultramarathons can be elevated. [ABSTRACT FROM AUTHOR] |
|
Copyright of Journal of Human Kinetics is the property of Termedia Publishing House and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Full Text Finder