Long-term effects of shoe mileage on knee and ankle joints muscle co-contraction during walking in females with genu varus

Jafarnezhadgero, Amir Ali; Hamlabadi, Milad Piran; Anvari, Maryam; Zago, Matteo

doi:10.1016/j.gaitpost.2021.07.004

Cited by 2 publications

(3 citation statements)

References 28 publications

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“…G * Power software, version 3.1 was used to assess a priori power analysis. The power analysis was performed using the F-test family [16]. This software showed that at least 15 participants per group are required to achieve large-sized interaction effects.…”

Section: Methodsmentioning

confidence: 99%

“…Two variables were constructed to calculate knee muscular co-contraction, directed co-contraction ratios (DCCR) of agonists and antagonists, and general co-contraction. directed co-contraction ratios (DCCRs) were measured for medial (semitendinosus (SM), vastus medialis (VM), medial gastrocnemius (MG))/lateral (biceps femoris (BF), vastus lateralis (VL)) muscles directed mediolateral knee co-contraction (MLDCCR), medial (VM)/lateral (VL) quadriceps (VM/VLDCCR), and the knee flexors (SM, BF, MG)/extensors (VL, VM) directed knee flexion and extension co-contraction (FEDCCR) [16]. The DCCRs were measured as follows:…”

Section: Experimental Setup and Data Processingmentioning

confidence: 99%

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The Effect of Three Types of Military Boots Mileage on Knee Muscular Co-contraction During Running

Hamlabadi,

Jafarnezhadgero,

Bakhshodeh Nia

et al. 2023

PTJ

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Purpose: Military boots mileage is a main factor that can affect the risk of running injuries. The present study aims to evaluate the effect of three types of military boots mileage on knee muscular co-contraction during running. Methods: Fifteen healthy males received three pairs of new military boots. Participants wore these boots for more than 6 months. Electromyography activity of lower limb muscles during running at constant speed was recorded during pre- and post-intervention. Then, knee muscular co-contraction was calculated. Results: Results showed a significant increase during loading response (P=0.030, n2p=0.157) and push-off (P=0.008, n2p=0.302) phases for general knee co-contraction at post-test compared to the pre-test. Also, directed mediolateral knee co-contraction showed a significant increment during mid-stance (P=0.028, n2p=0.040) and push-off (P=0.039, n2p=0.115) phases at post-test compared to the pre-test. Conclusion: It can be concluded that knee joint instability while using polyurethane thermoplastic is more than polyurethane boots. Also, our results demonstrated that maintaining knee stability in the anterior-posterior direction while using polyurethane thermoplastic is better than in polyurethane boots.

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Section: Methodsmentioning

confidence: 99%

Section: Experimental Setup and Data Processingmentioning

confidence: 99%

The Effect of Three Types of Military Boots Mileage on Knee Muscular Co-contraction During Running

Hamlabadi,

Jafarnezhadgero,

Bakhshodeh Nia

et al. 2023

PTJ

View full text Add to dashboard Cite

show abstract

“…The research methodology employed was quasi-experimental and conducted in a laboratory setting. Sample size estimation was performed using G*Power, considering an alpha level of 0.05, a statistical power of 95%, and an effect size of 0.70 based on a previous study related to muscle activities (15). The analysis indicated that a minimum of 15 participants in each group would be required to detect significant interaction effects.…”

Section: Participantsmentioning

confidence: 99%

Effect of Six Months of Using Thermoplastic Polyurethane and Rubber Military Boots on Lower Limb Muscle Activities During Running

Piran Hamlabadi,

Jafarnezhadgero

2024

Ann Mil Health Sci Res

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Background: The age of boots is a significant factor that can impact the risk of injury during daily activities. Conversely, military personnel rely on their footwear to meet the physical demands of their daily professional tasks. Objectives: This study aimed to evaluate how wearing thermoplastic polyurethane (TPU) and rubber military boots for six months affects lower limb muscle activity during running. Methods: Thirty healthy male participants were provided with two new pairs of rubber and TPU military boots and instructed to wear them for six months. Electromyography signals were recorded during a pre-test and after six months while the participants ran at a speed of 3.2 m/s. Statistical analysis was conducted using a two-way ANOVA with repeated measures, with a significance level of 0.05. Results: The results did not show a significant overall effect of "boots" or "time" on muscle activities during running. However, there were significant boot-by-time interactions for muscle activities during different phases of the running cycle. These interactions were observed for the tibialis anterior (P = 0.037, η2p = 0.146), gastrocnemius medialis (P = 0.023, η2p = 0.172), and gluteus medius (P = 0.038, η2p = 0.144) activities during the loading phase, tibialis anterior activity at the mid-stance phase (P = 0.003, η2p = 0.278), and gastrocnemius medialis activity during the push-off phase (P = 0.046, η2p = 0.135). Conclusions: Wearing military boots appears to affect muscle activities, particularly the tibialis anterior, in healthy males. These findings underscore the importance of careful boot selection for running activities. Understanding the reasons behind differences in muscle activity between TPU and rubber military boots can inform further research and the development of specialized footwear tailored to specific operational needs.

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Long-term effects of shoe mileage on knee and ankle joints muscle co-contraction during walking in females with genu varus

Cited by 2 publications

References 28 publications

The Effect of Three Types of Military Boots Mileage on Knee Muscular Co-contraction During Running

The Effect of Three Types of Military Boots Mileage on Knee Muscular Co-contraction During Running

Effect of Six Months of Using Thermoplastic Polyurethane and Rubber Military Boots on Lower Limb Muscle Activities During Running

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