Effects of a Fatigue Protocol on Vertical, Leg, and Joint Stiffness during Overground Running
Effects of a Fatigue Protocol on Vertical, Leg, and Joint Stiffness during Overground Running
| dc.contributor.advisor | Stickley, Christopher | |
| dc.contributor.author | Munoz, Garrett Jun | |
| dc.contributor.department | Kinesiology and Rehabilitation Science | |
| dc.date.accessioned | 2023-02-23T23:57:10Z | |
| dc.date.available | 2023-02-23T23:57:10Z | |
| dc.date.issued | 2022 | |
| dc.description.degree | M.S. | |
| dc.identifier.uri | https://hdl.handle.net/10125/104656 | |
| dc.subject | Biomechanics | |
| dc.title | Effects of a Fatigue Protocol on Vertical, Leg, and Joint Stiffness during Overground Running | |
| dc.type | Thesis | |
| dcterms.abstract | Running-induced neuromuscular fatigue can alter spring-mass characteristics such as vertical, leg, and joint stiffness. The purpose of the study was to investigate the effects of a treadmill run fatigue protocol on stiffness parameters during overground running. Sixteen healthy cadets (22.4 ± 3.9 yr, 1.76 ± 0.08 m, 72.4 ± 12.3 kg) from a University’s Army Reserve Officer Training Corp were included in the study. Rested and exhausted state overground running biomechanics were collected prior to and immediately after a fatigue protocol that involved an Åstrand Protocol Graded Exercise Test and an exhaustive run at a velocity associated with 80% VO2max. No significant changes were observed for vertical, leg, or joint stiffness group means. While insignificant, knee stiffness displayed increasing trends while hip stiffness displayed decreasing trends. Leg length at initial contact (-1%, p = 0.007) and compressed leg length (-1%, p = 0.013) significantly decreased. Hip excursion (+9%, p = 0.021), change in knee moment (+7%, p = 0.027), and knee moment at the instance when the anterior- posterior ground reaction force was zero (+8%, p = 0.021) significantly increased. While running in a fatigued state, subjects attempted to maintain overall vertical and leg stiffness with joint stiffness modulations. | |
| dcterms.extent | 43 pages | |
| dcterms.language | en | |
| dcterms.publisher | University of Hawai'i at Manoa | |
| dcterms.rights | All UHM dissertations and theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner. | |
| dcterms.type | Text | |
| local.identifier.alturi | http://dissertations.umi.com/hawii:11599 |
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