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Studies have demonstrated that individuals with chronic ankle instability (CAI) have diminished dynamic stability. Jerk-based measures have been utilized to examine dynamic balance because of their ability to quantify changes in acceleration and may provide an understanding of the postural corrections that occur during stabilizing following a jumping task. The purpose of this study was to compare acceleration and jerk following a jump stabilization task between individuals with CAI and the uninjured controls. Thirty-nine participants volunteered to participate in this case control study. Participants completed a jump stabilization task requiring them to jump off 2 feet, touch a marker set at 50% of their maximal vertical jump height, land on a single limb, and maintain balance for 3 seconds. Acceleration was calculated as the second derivative, and jerk was calculated as the third derivative of the displacement of the resultant vector position. Participants with CAI had greater acceleration (mean difference = 55.6 cm/s2; 95% confidence interval, 10.3 to 100.90; P = .017) and jerk compared with the uninjured controls (mean difference = 1804.5 cm/s3; 95% confidence interval, 98.7 to 3510.3; P = .039). These results suggest that individuals with CAI made faster and more frequent active postural control corrections to regain balance following a jump compared with the uninjured controls.
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http://dx.doi.org/10.1123/jab.2020-0104 | DOI Listing |
Front Sports Act Living
December 2024
CIAMS Laboratory, Université Paris-Saclay, Orsay, France.
Purpose: This study investigated the evolution of neuromotor control during a typical short sport-specific rehabilitation program (SSR) in professional soccer players who had incurred a major lower-limb injury ( = 15, chondral and muscle injuries, ACL-reconstruction).
Methods: All injured participants ( = 15) were in the on-field rehabilitation phase of their specific sport rehabilitation process, prior to return to play. An experimental group (EG, chondral and muscle injuries, ACL-reconstruction) followed a 3-week SSR-program composed of muscular and core strengthening (weightlifting, functional stability, explosivity and mobility exercises), running and cycling, neuromotor reprogramming, cognitive development and specific soccer on-field rehabilitation (acceleration, braking, cutting, dual-contact, high-speed-running, sprint, jump, drills with ball).
PLoS One
December 2024
Department of Physical Therapy, Tehran University of Medical Sciences, Tehran, Iran.
The primary inquiry of this study was to determine if exergaming is more effective than balance training in improving dynamic postural control during jump-landing movements among athletes with chronic ankle instability (CAI). Additionally, the study aimed to compare the effectiveness of these interventions on clinical and psychological outcomes. This study was a randomized, single-blinded, controlled trial in which participants were assigned to either an exergaming group or a balance training group.
View Article and Find Full Text PDFJ Bodyw Mov Ther
March 2025
Applied Physical Therapy Department, Federal University of Triangulo Mineiro, Brazil - Rua Vigário Carlos, 100 - Bloco B - 4° andar - Sala 406 - Abadia. Uberaba, MG, CEP: 38025-350, Uberaba, MG, Brazil. Electronic address:
Background: Dynamic tape™ (DT) is a biomechanical tape used to manage load directly, modify movement patterns, and assist functioning. Despite its increasing use in clinical practice, few studies have evaluated its effectiveness in improving postural stability, balance, and lower limb kinetics during jump landing tasks. This study aimed to investigate the acute effect of applying DT to the gluteus medius (GM) muscle on balance strategies during squatting, as well as on jump landing kinetics in asymptomatic active women.
View Article and Find Full Text PDFChaos
December 2024
Department of Mathematics, Indian Institute of Technology Indore, Khandwa Road, Simrol, Indore 453552, Madhya Pradesh, India.
This paper explores a discrete-time system derived from the well-known continuous-time Rosenzweig-MacArthur model using the piecewise constant argument. Examining the impact of increasing carrying capacity and harvesting efforts, we uncover intricate phenomena, such as periodicity, quasiperiodicity, period-doubling, period-bubbling, and chaos. Our analysis reveals that increasing the carrying capacity of prey species can lead to both system stabilization and destabilization.
View Article and Find Full Text PDFJ Bodyw Mov Ther
October 2024
Graduate Program in Rehabilitation and Functional Performance, Department of Physical Therapy, Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Diamantina, Minas Gerais, Brazil. Electronic address:
Objective: Investigate whether wearing 7 mm neoprene knee sleeves during the front squat and box jump CrossFit exercises change the biomechanics of the knee joint.
Design: a cross-sectional exploratory study.
Setting: Laboratory-based.
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