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- Title
The Effect of Backpack Load Carriage on the Kinetics and Kinematics of Ankle and Knee Joints During Uphill Walking.
- Authors
Jinkyu Lee; Yong-Jin Yoon; Choongsoo S. Shin
- Abstract
The purpose of this study was to investigate the effect of load carriage on the kinematics and kinetics of the ankle and knee joints during uphill walking, including joint work, range of motion (ROM), and stance time. Fourteen males walked at a self-selected speed on an uphill (15°) slope wearing military boots and carrying a rifle in hand without a backpack (control condition) and with a backpack. The results showed that the stance time significantly decreased with backpack carriage (p < .05). The mediolateral impulse significantly increasedwith backpack carriage (p < .05). In the ankle joints, the inversion-eversion, and dorsi-plantar flexion ROMin the ankle joints increased with backpack carriage (p < .05). The greater dorsi-plantar flexion ROMwith backpack carriage suggested 1 strategy for obtaining high plantar flexor power during uphill walking. The result of the increased mediolateral impulse and inversion-eversion ROMin the ankle joints indicated an increase in body instability caused by an elevated center of mass with backpack carriage during uphill walking. The decreased stance time indicated that an increase in walking speed could be a compensatory mechanism for reducing the instability of the body during uphill walking while carrying a heavy backpack.
- Subjects
SOUTH Korea; ANKLE; BACKPACKING; DYNAMICS; FOOT; RANGE of motion of joints; KINEMATICS; KNEE; PROBABILITY theory; BODY movement; DORSIFLEXION; PLANTARFLEXION
- Publication
Journal of Applied Biomechanics, 2017, Vol 33, Issue 6, p397
- ISSN
1065-8483
- Publication type
Article
- DOI
10.1123/jab.2016-0221