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2014 | 44 | 1 | 41-52
Tytuł artykułu

Impact of Center-of-Mass Acceleration on the Performance of Ultramarathon Runners

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
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 centerof- 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.
Słowa kluczowe
Wydawca

Rocznik
Tom
44
Numer
1
Strony
41-52
Opis fizyczny
Daty
wydano
2014-12-01
zaakceptowano
2014-12-01
online
2014-12-30
Twórcy
  • Center for General Education, China University of Science and Technology, Taipei, Taiwan
  • Department of Physical Therapy and Assistive Technology, National Yang-Ming University, Taipei, Taiwan
autor
  • Department of Physical Therapy and Assistive Technology, National Yang-Ming University, Taipei, Taiwan
autor
  • Department of Computer Science & Information Management, Soochow University, Taipei, Taiwan
  • Institute of Brain Science, National Yang-Ming University, Taipei, Taiwan
  • Department of Physical Therapy and Assistive Technology, National Yang-Ming University, Taipei, Taiwan, jinjong.chen518@gmail.com
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_hukin-2014-0109
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