Leg Stiffness and Vertical Stiffness of Habitual Forefoot and Rearfoot Strikers during Running
Foot strike patterns influence the running efficiency and may be an injury risk. However, differences in the leg stiffness between runners with habitual forefoot (hFFS) and habitual rearfoot (hRFS) strike patterns remain unclear. This study aimed at determining the differences in the stiffness, asso...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Applied Bionics and Biomechanics |
| Online Access: | http://dx.doi.org/10.1155/2020/8866340 |
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| author | Lulu Yin Xiaoyue Hu Zhangqi Lai Kun Liu Lin Wang |
| author_facet | Lulu Yin Xiaoyue Hu Zhangqi Lai Kun Liu Lin Wang |
| author_sort | Lulu Yin |
| collection | DOAJ |
| description | Foot strike patterns influence the running efficiency and may be an injury risk. However, differences in the leg stiffness between runners with habitual forefoot (hFFS) and habitual rearfoot (hRFS) strike patterns remain unclear. This study aimed at determining the differences in the stiffness, associated loading rate, and kinematic performance between runners with hFFS and hRFS during running. Kinematic and kinetic data were collected amongst 39 runners with hFFS and 39 runners with hRFS running at speed of 3.3 m/s, leg stiffness (Kleg), and vertical stiffness (Kvert), and impact loads were calculated. Results found that runners with hFFS had greater Kleg (P=0.010, Cohen’s d=0.60), greater peak vertical ground reaction force (vGRF) (P=0.040, Cohen’s d=0.47), shorter contact time(tc) (P<0.001, Cohen’s d=0.85), and smaller maximum leg compression (ΔL) (P=0.002, Cohen’s d=0.72) compared with their hRFS counterparts. Runners with hFFS had lower impact peak (IP) (P<0.001, Cohen’s d=1.65), vertical average loading rate (VALR) (P<0.001, Cohen’s d=1.20), and vertical instantaneous loading rate (VILR) (P<0.001, Cohen’s d=1.14) compared with runners with hRFS. Runners with hFFS landed with a plantar flexed ankle, whereas runners with hRFS landed with a dorsiflexed ankle (P<0.001, Cohen’s d=3.35). Runners with hFFS also exhibited more flexed hip (P=0.020, Cohen’s d=0.61) and knee (P<0.001, Cohen’s d=1.15) than runners with hRFS at initial contact. These results might indicate that runners with hFFS were associated with better running economy through the transmission of elastic energy. |
| format | Article |
| id | doaj-art-f459bd354cf140f2a1e662fcb28e037e |
| institution | Kabale University |
| issn | 1176-2322 1754-2103 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Applied Bionics and Biomechanics |
| spelling | doaj-art-f459bd354cf140f2a1e662fcb28e037e2025-02-03T01:00:16ZengWileyApplied Bionics and Biomechanics1176-23221754-21032020-01-01202010.1155/2020/88663408866340Leg Stiffness and Vertical Stiffness of Habitual Forefoot and Rearfoot Strikers during RunningLulu Yin0Xiaoyue Hu1Zhangqi Lai2Kun Liu3Lin Wang4Department of Critical Care Medicine, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, ChinaSchool of Kinesiology, Shanghai University of Sport, Shanghai, ChinaSchool of Kinesiology, Shanghai University of Sport, Shanghai, ChinaDepartment of Rehabilitation Medicine, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, ChinaSchool of Kinesiology, Shanghai University of Sport, Shanghai, ChinaFoot strike patterns influence the running efficiency and may be an injury risk. However, differences in the leg stiffness between runners with habitual forefoot (hFFS) and habitual rearfoot (hRFS) strike patterns remain unclear. This study aimed at determining the differences in the stiffness, associated loading rate, and kinematic performance between runners with hFFS and hRFS during running. Kinematic and kinetic data were collected amongst 39 runners with hFFS and 39 runners with hRFS running at speed of 3.3 m/s, leg stiffness (Kleg), and vertical stiffness (Kvert), and impact loads were calculated. Results found that runners with hFFS had greater Kleg (P=0.010, Cohen’s d=0.60), greater peak vertical ground reaction force (vGRF) (P=0.040, Cohen’s d=0.47), shorter contact time(tc) (P<0.001, Cohen’s d=0.85), and smaller maximum leg compression (ΔL) (P=0.002, Cohen’s d=0.72) compared with their hRFS counterparts. Runners with hFFS had lower impact peak (IP) (P<0.001, Cohen’s d=1.65), vertical average loading rate (VALR) (P<0.001, Cohen’s d=1.20), and vertical instantaneous loading rate (VILR) (P<0.001, Cohen’s d=1.14) compared with runners with hRFS. Runners with hFFS landed with a plantar flexed ankle, whereas runners with hRFS landed with a dorsiflexed ankle (P<0.001, Cohen’s d=3.35). Runners with hFFS also exhibited more flexed hip (P=0.020, Cohen’s d=0.61) and knee (P<0.001, Cohen’s d=1.15) than runners with hRFS at initial contact. These results might indicate that runners with hFFS were associated with better running economy through the transmission of elastic energy.http://dx.doi.org/10.1155/2020/8866340 |
| spellingShingle | Lulu Yin Xiaoyue Hu Zhangqi Lai Kun Liu Lin Wang Leg Stiffness and Vertical Stiffness of Habitual Forefoot and Rearfoot Strikers during Running Applied Bionics and Biomechanics |
| title | Leg Stiffness and Vertical Stiffness of Habitual Forefoot and Rearfoot Strikers during Running |
| title_full | Leg Stiffness and Vertical Stiffness of Habitual Forefoot and Rearfoot Strikers during Running |
| title_fullStr | Leg Stiffness and Vertical Stiffness of Habitual Forefoot and Rearfoot Strikers during Running |
| title_full_unstemmed | Leg Stiffness and Vertical Stiffness of Habitual Forefoot and Rearfoot Strikers during Running |
| title_short | Leg Stiffness and Vertical Stiffness of Habitual Forefoot and Rearfoot Strikers during Running |
| title_sort | leg stiffness and vertical stiffness of habitual forefoot and rearfoot strikers during running |
| url | http://dx.doi.org/10.1155/2020/8866340 |
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