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Xue A, Zeng Z, Wang H, Han J, Pang B. Kinematic characteristics of gait with different myopia: a cross-sectional study. Front Public Health 2023; 11:1256242. [PMID: 38179553 PMCID: PMC10765516 DOI: 10.3389/fpubh.2023.1256242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 11/03/2023] [Indexed: 01/06/2024] Open
Abstract
Background Myopia, a condition affecting approximately one-quarter of the world' s population, has been projected to double in prevalence by the year 2050. It can have an impact on postural control during walking and can increase the risk of falls and injuries. Objective (1) To examine the abnormal performance of postural control during walking in male college students who used convex lenses for myopia intervention from a kinematic perspective; (2) to establish theoretical foundation for preventing falls and injuries in the myopic population. Methods A total of 22 male college students participated in this study. The center of gravity (COG), the percentage of gait cycle (PGC) and the joint angle(JT) were collected as indications of postural control during walking. A quantitative analysis was conducted using a One-Way Repeated Measures ANOVA to examine the variations among the three groups. Results During myopic interventions, (1) the range of vertical COG changes is significant to be greater compared with normal vision (P < 0.05). (2) there was an significant increase in the PGC in single-legged support, accompanied by a decrease in the PGC in double-legged support, compared with normal vision (P < 0.05). (3) The myopic intervention leads to increased variability in JT of the hip and the knee during the single-leg support and swing, as compared to individuals with normal vision (P < 0.05). Severe myopic interventions result in more changes in JT of ankle. Conclusion Myopia has been found to have a negative impact on postural control during walking, leading to changes in balance, increased instability, and an elevated risk of injury.
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Affiliation(s)
- Aochuan Xue
- College of Physical Education and Health, East China Normal University, Shanghai, China
- School of Sports and Health, Zunyi Medical University, Zunyi, Guizhou, China
| | - Zhaohong Zeng
- School of Sports and Health, Zunyi Medical University, Zunyi, Guizhou, China
| | - Huihui Wang
- School of Sports and Health, Zunyi Medical University, Zunyi, Guizhou, China
| | - Jinming Han
- School of Physical and Art Education, Beijing Institute of Education, Beijing, China
| | - Bo Pang
- School of Sports Science, Harbin Normal University, Harbin, China
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Li H, Peng F, Lyu S, Ji Z, Li X, Liu M. Newly compiled Tai Chi (Bafa Wubu) promotes lower extremity exercise: a preliminary cross sectional study. PeerJ 2023; 11:e15036. [PMID: 36935910 PMCID: PMC10019341 DOI: 10.7717/peerj.15036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 02/20/2023] [Indexed: 03/14/2023] Open
Abstract
Background Tai Chi (Bafa Wubu) is a new type of simplified Tai Chi widely practiced by Tai Chi enthusiasts that has developed and perfected simplified Tai Chi movement and enriched Tai Chi practice methods. When practicing, Tai Chi athletes and enthusiasts can choose the Bafa Wubu movements to practice according to their physical conditions. The purpose of this article is to discuss the mechanism by which Bafa Wubu promotes lower extremity exercise from the perspective of exercise biomechanics. Objectives This article aims to explore the scientific training methods and technical characteristics of Bafa Wubu, and its contribution to comprehensive exercise of the lower extremities, by analyzing the biomechanical characteristics of the lower extremities of participants who practice Bafa Wubu at different levels and by comparing their ground reaction force, lower limb joints, and muscles during Bafa Wubu. Methods A total of 16 male participants were recruited and divided into an amateur group (N = 8) and a professional group (N = 8). The data were collected by a BTS 3D infrared-based motion capture system, and Kistler 3D force plate. The lower extremity joint forces and muscle strength were calculated by anybody simulation software with inverse dynamics. Results During elbowing and leaning sideways with steps sideways (ELS), the ground reaction force of the professional group was significantly higher than that of the amateur group in the sagittal, vertical, and frontal axes (P < 0.01). While stepping forward, backward, and sideways, the professional group's joints loading at the hip, knee, and ankle was always higher in the vertical direction (P < 0.01). Furthermore, during warding off with steps forward (WOF), laying with steps forward (LF), and rolling back with steps backward (RBB), hip joint loading increased in the med-lat direction. During actions with steps backward and sideways, the professional group's ankle flexion/extension torque and hip abduction/rotation torque were significantly larger than those of the amateur group (P < 0.01). Different actions in Bafa Wubu activate muscles to different degrees, whereas the iliacus is mainly responsible for stabilizing postures when practitioners perform standing knee lifting motions. Conclusions Professional groups who have been practicing Tai Chi (Bafa Wubu) for a long time have higher ground reaction force, and the force on the three joints of the lower extremities is different for various movements, which has positive significance for exercising the joints of the lower extremities. In addition, various motions activate muscles of different types at different levels. For amateurs to practice different movements to stimulate the muscles, targeted areas of practice promote the lower extremity muscles' synergistic force. In summary, the muscles and joints of the lower extremity can obtain comprehensive and balanced exercise through Bafa Wubu.
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Affiliation(s)
- Haojie Li
- School of P.E and Sports, Beijing Normal University, Beijing, Haidian, China
| | - Fang Peng
- Department of PE, Peking University, Beijing, Haidian, China
| | - Shaojun Lyu
- School of P.E and Sports, Beijing Normal University, Beijing, Haidian, China
| | - Zhongqiu Ji
- School of P.E and Sports, Beijing Normal University, Beijing, Haidian, China
| | - Xiongfeng Li
- School of P.E and Sports, Beijing Normal University, Beijing, Haidian, China
| | - Mingyu Liu
- School of P.E and Sports, Beijing Normal University, Beijing, Haidian, China
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Zeng X, Xie Z, Zhong G, Chen Y, Wen B, Li Y, Ma L, Huang W, Yang T, Zhang Y. The 6DOF knee kinematics of healthy subjects during sloped walking compared to level walking. Gait Posture 2022; 95:198-203. [PMID: 35526472 DOI: 10.1016/j.gaitpost.2022.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/23/2022] [Accepted: 05/02/2022] [Indexed: 02/02/2023]
Abstract
BACKGROUND Level Walking is a frequent functional movement during daily life. However, sloped walking is also common. Exploring 6DOF knee kinematics during sloped walking is important. It provides a reference for the rehabilitation, safety, and knee health of patients with knee diseases walking on sloped surfaces. RESEARCH QUESTION The study aimed to explore 6DOF knee kinematics characteristics during sloped walking compared to level walking. We hypothesized that tibial anteroposterior translation and flexion angle (the sagittal plane) were significantly different from those of level walking. METHODS One hundred young, healthy adults (50 males and 50 females) were recruited for this study. A three-dimensional gait analysis system was used to collect 6DOF knee kinematics during level and sloped walking. The slope was set to ± 15% when the sloped walking was performed. RESULTS Sloped walking mainly increased knee flexion angle (upslope, 2.5-26.2°, 1-100% gait cycle (GC), p < 0.05; downslope, 1.7-11.9°, 15-95% GC, p < 0.05) and anterior tibial translation (upslope, 0.7-4.1 mm, 3-54% GC & 0.6-2.1 mm, 80-94% GC; downslope, 1.0-2.2 mm, 21-69% GC) in the participants' knees. However, participants' other 4DOF knee kinematics during sloped walking were significantly different from those during level walking (p < 0.05). Participants had 'drastically changeable' knee kinematic alterations in the transverse and coronal plane (the other 4DOF knee kinematics) during sloped walking compared to level walking. SIGNIFICANCE Our results confirmed the hypothesis. Sloped walking significantly increased anterior tibial translation (in most GC) and flexion angle. These kinematic changes in healthy subjects should be evaluated and further explored for patients with knee diseases, such as anterior cruciate ligament deficiency. Our findings are meaningful for their rehabilitation or safety or knee health while walking on sloped surfaces. Our study may provide a pilot reference for the 6DOF knee kinematic exploration of sloped walking.
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Affiliation(s)
- Xiaolong Zeng
- School of Medicine, South China University of Technology, Guangzhou 510006, Guangdong, China; Department of Orthopaedics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong, China
| | - Zhenyan Xie
- Department of Orthopaedics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong, China; Shantou Central Hospital, Shantou 515000, Guangdong, China
| | - Guoqing Zhong
- Department of Orthopaedics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong, China; Shantou Central Hospital, Shantou 515000, Guangdong, China
| | - Ying Chen
- Shantou Central Hospital, Shantou 515000, Guangdong, China
| | - Baohong Wen
- Shantou Central Hospital, Shantou 515000, Guangdong, China
| | - Yixi Li
- School of Public Health, Guangdong Pharmaceutical University, Guangzhou 510000, Guangdong, China
| | - Limin Ma
- Department of Orthopaedics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong, China
| | - Wenhan Huang
- Department of Orthopaedics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong, China
| | - Tao Yang
- School of Medicine, South China University of Technology, Guangzhou 510006, Guangdong, China; Department of Orthopaedics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong, China
| | - Yu Zhang
- School of Medicine, South China University of Technology, Guangzhou 510006, Guangdong, China; Department of Orthopaedics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Guangdong, China.
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