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How do orthotic insoles affect muscle activation patterns in the vastus lateralis muscle group? 

Gait
Biomechanics
Heel
Electromyography
Treadmill
Best insight from top research papers

Orthotic insoles can influence muscle activation patterns in the vastus lateralis muscle group. Research indicates that different types of orthotic insoles, such as those with spacer fabrics or flexion-resist and extension-assist mechanisms, can lead to varied effects on muscle activity. For instance, insoles with spacer fabrics have been shown to reduce the maximum muscle activity of vastus lateralis during turning movements. On the other hand, custom knee orthoses with flexion-resist and extension-assist mechanisms significantly decrease the electromyographic signals of the vastus lateralis muscle during lateral stepping activities. These findings suggest that orthotic insoles can modulate muscle activation patterns in the vastus lateralis muscle group, highlighting the potential of orthotic interventions to impact muscle function during various movements.

Answers from top 5 papers

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Papers (5)Insight
Open access•Journal Article•DOI
Effects of custom-made textile insoles on plantar pressure distribution and lower limb EMG activity during turning
W. T. Lo, D. P. Wong, KL Yick, S. P. Ng, Joanne Yip 
13 Jul 2016-Journal of Foot and Ankle Research
11 Citations
Custom-made textile insoles, particularly those with spacer fabrics, reduce vastus lateralis muscle activity during turning, as shown by lower maximum muscle activities (>16%) at turn around phase.
Open access•Journal Article•DOI
Effects of orthoses on muscle activity and synergy during gait
Yu Hashiguchi, Ryosuke Goto, Toru Naka 
09 Feb 2023-PLOS ONE
1 Citations
Orthotic insoles, specifically ankle-foot and knee-ankle-foot orthoses, alter muscle activation patterns in the vastus lateralis muscle group during gait, as observed in the study on healthy adults.
Journal Article•DOI
Orthotic bicycle shoe insoles show no effects on leg muscle activation patterns or performance in recreational cyclists
A. C. Meyers, E. C. Caldwell, Jordan Hirsch, Kevin A. Jacobs, Ryan T. Pohlig, Joseph F. Signorile 
11 Jul 2017-Footwear Science
Orthotic insoles did not show significant effects on vastus lateralis muscle activation patterns in recreational cyclists during cycling, as indicated by the study's findings.
Open access•DOI
The effect of shoe insole stiffness on electromyography activity pattern of selected lower extremity muscles during running on treadmill
Amir Reza Sedighi, Mehrdad Anbarian 
10 Jan 2021
1 Citations
Orthotic insoles with varying stiffness levels influence muscle activation patterns in the vastus lateralis muscle group, showing lower activity with soft insoles compared to semi-rigid ones during running.
Journal Article•DOI
Effect of flexion-resist and extension-assist knee orthosis on electromyographic activities of quadriceps during lateral stepping
Toshiki Kobayashi, See Moon Tee, Masanori Morikawa, Tsubasa Tashiro, Satoshi Arima, Noriaki Maeda, Aaron K.L. Leung 
30 Nov 2022-Prosthetics and Orthotics International
Flexion-resist and extension-assist knee orthosis reduced vastus lateralis muscle activity during lateral stepping, as indicated by decreased normalized RMS EMG signals, suggesting potential muscle activation pattern alteration.

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Does increased foot contact time change muscle activation patterns of the lower limb?5 answersIncreased foot contact time can indeed alter muscle activation patterns in the lower limb. Research has shown that maintaining continuous foot contact with the ground during activities like race walking can lead to specific demands on muscle activation patterns. Additionally, the way runners strike their foot on the ground, whether with a forefoot or rearfoot pattern, can significantly affect muscle activation timing. Moreover, the application of foot pressure has been found to enhance lower limb neuromuscular activation, indicating the importance of foot sensory input in modulating muscle activity. Therefore, variations in foot contact time and patterns can influence the activation levels and timing of muscles in the lower limb, highlighting the intricate relationship between foot mechanics and muscle activation during different activities.
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What are the effects of functional insoles on performance and ankle injuries in athletes?5 answersFunctional insoles, such as carbon fiber insoles (CFI) and arch-support insoles, have been studied for their effects on performance and ankle injuries in athletes. Research has shown that CFI can improve sports performance by reducing energy loss and increasing energy return, potentially providing a propulsive force for better performance. However, CFI may also increase muscle activation and fatigue, which could be a concern. Textured insoles, including textured lateral wedges, have been found to decrease ankle movement variability in athletes with functional ankle instability (FAI). These textured insoles may have the potential to improve ankle stability and reduce the risk of ankle injuries. On the other hand, a study found that arch-support insoles increased ground reaction forces and knee loading, indicating a higher risk of anterior cruciate ligament injuries. Therefore, the effects of functional insoles on performance and ankle injuries in athletes may vary depending on the specific type of insole used.

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