Foot Kinematics of Impact Absorption and Force Exertion During Depth-Jump Using a Multi-segment Foot Model
- PDF / 1,342,151 Bytes
- 9 Pages / 595.276 x 790.866 pts Page_size
- 49 Downloads / 192 Views
ORIGINAL ARTICLE
Foot Kinematics of Impact Absorption and Force Exertion During Depth-Jump Using a Multi-segment Foot Model Yuka Sekiguchi1 · Takanori Kokubun2 · Hiroki Hanawa3 · Hitomi Shono1 · Ayumi Tsuruta1,4 · Naohiko Kanemura2 Received: 30 April 2020 / Accepted: 10 August 2020 © Taiwanese Society of Biomedical Engineering 2020
Abstract Purpose To determine the foot kinematics of the depth-jump in healthy adults. We examined the usefulness of a multisegment foot model for a movement that requires impact absorption and force exertion on the foot. Methods Twenty healthy adults (ten men, ten women) performed a depth-jump from a 40-cm height box on to force plates. We analyzed foot motion on the landing and jump preparation phases using the Rizzoli Foot Model. Results A pattern of foot motion was observed during the depth-jump. Although there were no differences of the foot structure at the static standing position with respect to sex, the maximum angle of the medial longitudinal arch (MLA) in the landing phase was significantly greater in women than in men (p = 0.017). The maximum angle of the MLA in the landing phase was strongly negatively correlated with the jump height (r = − 0.6, p = 0.05). Conclusions By using a multi-segment foot model, it was possible to observe a common foot motion pattern among subjects, even during a quick movement such as the depth-jump. We suggest that motion analysis using the multi-segment foot model will be useful in evaluating the foot functions of impact absorption and force exertion during a dynamic movement such as the depth-jump. Keywords Kinematics · Standing position · Physical exertion · Foot · Movement · Motion
1 Introduction The human foot has a complex structure not observed in other animals that makes it possible for humans to walk upright bipedally. The arch structure of the human foot has two conflicting functions: one is absorbing impact by flexibly deforming and the other is a foundation for exerting force by increasing rigidity. Various motion tasks are achieved efficiently by a change in the foot shape during movement. The foot arch structure is supported by muscles, tendons, and ligaments. However, foot structure breaks down in the * Naohiko Kanemura kanemura‑[email protected] 1
Graduate Course of Health and Social Services, Graduate School of Saitama Prefectural University, Saitama, Japan
2
Department of Health and Social Services, Saitama Prefectural University, 820 Sannomiya, Koshigaya, Saitama 343‑8540, Japan
3
Department of Rehabilitation, Faculty of Health Science, University of Human Arts and Sciences, Saitama, Japan
4
Ageo Futatsumiya Clinic, Saitama, Japan
presence of repeated heavy impact, increasing the likelihood of disorder or injury [1]. To determine risk factors for injury, investigations of body structure and motion characteristics have been conducted by analyzing motions that are most likely to cause injuries. Many studies have focused on large joints of the lower extremities, such as the hip [2], knee [2–4], and ankle [
Data Loading...
