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Sensor location affects skeletal muscle contractility parameters measured by tensiomyography
Carsten Schwiete1, Christian Roth1, Christoph Braun1
1Department of Sports Sciences, Goethe University Frankfurt, Frankfurt, Germany.
Plos One
|February 9, 2023
Summary
Sensor location significantly impacts tensiomyography (TMG) measurements of skeletal muscle contractile properties. Lower leg fixation did not affect TMG parameters, guiding standardized muscle assessment protocols.
Area of Science:
- Biomechanics
- Sports Medicine
- Physiology
Background:
- Tensiomyography (TMG) is a valuable non-invasive tool for assessing skeletal muscle contractile properties.
- Lack of standardized TMG protocols hinders its widespread adoption in sports medicine.
- Investigating measurement variables is crucial for reliable TMG data.
Purpose of the Study:
- To determine the influence of lower leg fixation on TMG parameters.
- To evaluate the effect of sensor location on TMG measurements of the biceps femoris (BF) muscle.
- To provide recommendations for standardized TMG measurement procedures.
Main Methods:
- Twenty-two male participants underwent Tensiomyography measurements on the biceps femoris.
- Measurements were performed with and without lower leg fixation.
- TMG sensors were placed at two distinct locations: muscle belly center (BF-mid) and 10 cm distal (BF-distal).
Main Results:
- Sensor location significantly affected TMG parameters, including delay time (Td), maximum displacement (Dm), and contraction velocity (Vc).
- Specifically, Td, Dm, and Vc were significantly different between BF-mid and BF-distal sensor positions.
- No significant differences in TMG parameters were observed based on lower leg fixation status.
Conclusions:
- Sensor location is a critical factor influencing TMG-derived contractile properties of the biceps femoris.
- Lower leg fixation does not appear to significantly alter TMG measurements.
- Standardized sensor placement is recommended for consistent and interpretable TMG data in research and practice.
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