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Jafarnezhadgero A, Moradzadeh N, Fakhri Mirzanag E. The Impact of Excessive Body Weight Along with Running Related Fatigue on Directed and General Co-Contraction of Ankle Joint During Running. PTJ 2025; 15 (3)
URL: http://ptj.uswr.ac.ir/article-1-650-en.html
URL: http://ptj.uswr.ac.ir/article-1-650-en.html
1- Department of Sport Management and Biomechanics, Faculty of Education Sciences and Psychology, University of Mohaghegh Ardabili, Ardabil, Iran.
2- Department of Physical Education and Sport Sciences, Faculty of Education Sciences and Psychology, University of Mohaghegh Ardabili, Ardabil, Iran.
2- Department of Physical Education and Sport Sciences, Faculty of Education Sciences and Psychology, University of Mohaghegh Ardabili, Ardabil, Iran.
Abstract: (176 Views)
Purpose: It is uncertain how fatigue protocol and overweight affect electromyography activity of lower limb muscles. The purpose of this research was to evaluate how excessive body weight and the fatigue associated with the co-contraction of the ankle joint during running.
Methods: Forty-eight females were divided into four groups. The first group consists of people who have a body mass index (BMI) that is less than 25 kg/m² and normal foot (navicular drop: 4 to 10 mm). The second group consists of people who have a BMI within the normal range (BMI <25 kg/m²) and have feet that roll inward (navicular drop of more than 10 mm). Third group include People who have a BMI of 25 kg/m² or higher and normal foot (navicular drop: 4 to 10 mm). Fourth group include People with a BMI of 25 kg/m² or higher and flat feet (navicular drop: more than 10 mm). The running task was done at ~3.2 m/s over an 18-m before and after fatigue protocol. The walkway has a force plate embedded at its midpoint. Activity of the tibialis anterior, gastrocnemius medialis, vastus lateralis, vastus medialis, rectus femoris, and biceps femuris and semi tendinosus were collected using surface bipolar electromyography system.
Results: Results demonstrated significant main effects of “Group” for general ankle co-contraction during loading phase. Paired-wise comparison demonstrated significantly greater general ankle co-contraction in the overweight/normal foot group than that other groups.
Conclusion: The general ankle co-contraction values were higher in overweight groups than normal groups, which can be associated with overloads on the ankle joint. These findings can be useful for designing rehabilitation protocols for overweight people with and without pronated feet.
Methods: Forty-eight females were divided into four groups. The first group consists of people who have a body mass index (BMI) that is less than 25 kg/m² and normal foot (navicular drop: 4 to 10 mm). The second group consists of people who have a BMI within the normal range (BMI <25 kg/m²) and have feet that roll inward (navicular drop of more than 10 mm). Third group include People who have a BMI of 25 kg/m² or higher and normal foot (navicular drop: 4 to 10 mm). Fourth group include People with a BMI of 25 kg/m² or higher and flat feet (navicular drop: more than 10 mm). The running task was done at ~3.2 m/s over an 18-m before and after fatigue protocol. The walkway has a force plate embedded at its midpoint. Activity of the tibialis anterior, gastrocnemius medialis, vastus lateralis, vastus medialis, rectus femoris, and biceps femuris and semi tendinosus were collected using surface bipolar electromyography system.
Results: Results demonstrated significant main effects of “Group” for general ankle co-contraction during loading phase. Paired-wise comparison demonstrated significantly greater general ankle co-contraction in the overweight/normal foot group than that other groups.
Conclusion: The general ankle co-contraction values were higher in overweight groups than normal groups, which can be associated with overloads on the ankle joint. These findings can be useful for designing rehabilitation protocols for overweight people with and without pronated feet.
Type of Study: Research |
Subject:
Special
Received: 2024/06/26 | Accepted: 2024/10/20 | Published: 2025/07/13
Received: 2024/06/26 | Accepted: 2024/10/20 | Published: 2025/07/13
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