AI Article Synopsis
- The study aimed to analyze how antiphase trunk motion affects quiet stance stability without changes in visual or surface conditions.
- Wearing a rigid orthotic brace that limited trunk motion, researchers compared sway characteristics across different brace conditions.
- Findings revealed that allowing antiphase motion reduced trunk and leg sway velocities and highlighted the relationship between trunk movement and ankle torque, suggesting that this motion is crucial for maintaining balance, especially in predicting postural issues due to various factors.
Article Abstract
The purpose of this study was to determine the role of antiphase trunk motion during quiet stance while maintaining constant visual and support surface conditions. Eyes-open quiet stance trials were performed on a firm support surface while wearing a rigid hip-knee orthotic brace that reduced antiphase trunk motion. Amplitude spectral density, coherence, and cophase were compared for hip-locked, hip-unlocked, and no-brace conditions. Amplitude spectral density calculations showed that trunk and leg sway velocities, and ankle torque (AT) decreased when antiphase trunk sway was allowed. Coherence and cophase estimates identified in-phase trunk-legs sway below 1 Hz and antiphase at higher frequencies. Legs-AT cophase calculations showed that the legs lagged the application of AT at all frequencies, while trunk-AT cophase showed the trunk lagged AT below 1 Hz and led AT at higher frequencies. The results demonstrate that antiphase trunk sway helps reduce sway velocity and AT. Furthermore, the trunk-leading cophase relationship with AT showed that antiphase trunk motion occurred before AT was applied. This implies that antiphase trunk motion facilitates changes in sway direction and helps regulate sway velocity. The results have significant implications for predicting postural control deficiencies due to injury, disease, and aging.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1123/jab.2024-0110 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Antiphase Trunk Motion Reduces Sway Velocity and Ankle Torque During Quiet Stance.
J Appl Biomech
January 2025
College of Medicine, The Pennsylvania State University, Hershey, PA, USA.
Article Synopsis
- The study aimed to analyze how antiphase trunk motion affects quiet stance stability without changes in visual or surface conditions.
- Wearing a rigid orthotic brace that limited trunk motion, researchers compared sway characteristics across different brace conditions.
- Findings revealed that allowing antiphase motion reduced trunk and leg sway velocities and highlighted the relationship between trunk movement and ankle torque, suggesting that this motion is crucial for maintaining balance, especially in predicting postural issues due to various factors.
Bayesian estimation of trunk-leg coordination during walking using phase oscillator models.
Neurosci Res
October 2024
Graduate School of Informatics, Kyoto University, Yoshida-Honmachi, Sakyo-ku, Kyoto 606-8501, Japan.
In human walking, the legs and other body parts coordinate to produce a rhythm with appropriate phase relationships. From the point of view for rehabilitating gait disorders, such as Parkinson Disorders, it is important to understand the control mechanism of the gait rhythm. A previous study showed that the antiphase relationship of the two legs during walking is not strictly controlled using the reduction of the motion of the legs during walking to coupled phase oscillators.
View Article and Find Full Text PDFCan training to dissociate trunk and pelvic motion influence thorax-pelvis coordination and lumbar spine dynamic stability?
Musculoskelet Sci Pract
August 2024
Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada. Electronic address:
Background: The large number of articulating joints within the spinal column provides an abundance of options to control its movement. However, the ability of individuals to consciously manipulate these movement options is poorly understood.
Objectives: To determine if short-term training can improve the ability to consciously dissociate motion between the pelvis and thorax during repetitive pelvic tilting movements.
Lumbopelvic movement coordination during walking improves with transfemoral bone anchored limbs: Implications for low back pain.
Gait Posture
March 2024
University of Colorado Bone-Anchored Limb Research Group, University of Colorado Anschutz Medical Campus, Aurora, CO, United States; Department of Orthopedics, University of Colorado Anschutz Medical Campus, Aurora, CO, United States.
Background: Low back pain (LBP) is more prevalent in patients with transfemoral amputation using socket prostheses than able-bodied individuals, in part due to altered spinal loading caused by aberrant lumbopelvic movement patterns. Early evidence surrounding bone-anchored limb functional outcomes is promising, yet it remains unknown if this novel prosthesis influences LBP or movement patterns known to increase its risk.
Research Question: How are self-reported measures of LBP and lumbopelvic movement coordination patterns altered when using a unilateral transfemoral bone-anchored limb compared to a socket prosthesis?
Methods: Fourteen patients with unilateral transfemoral amputation scheduled to undergo intramedullary hardware implantation for bone-anchored limbs due to failed socket use were enrolled in this longitudinal observational cohort study (7 F/7 M, Age: 50.
Sex differences in pelvis, thigh, and shank coordination during walking.
J Biomech
January 2024
Department of Rehabilitation, Faculty of Rehabilitation, Hiroshima International University, Hiroshima, Japan.
Differences in lower limb kinematics between males and females during functional activities may be attributed to sex differences in the incidence of patellofemoral pain, which is more common in females. To better comprehend the knee joint motion, it is necessary to understand both inter-segmental coordination patterns and angular amplitude. This exploratory study aimed to assess sex differences in pelvis-thigh and thigh-shank coordination patterns in the frontal and horizontal planes during walking.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!