Related Experiment Video
Updated: Jul 12, 2026
06:00
Determining The Electromyographic Fatigue Threshold Following a Single Visit Exercise Test
Published on: July 27, 2015
12.5K
Muscle excitability testing: Age and sex dependency of normative data
Matthias Thomas Exl1,2, Belén Rodriguez1, Karl Ng3,4
1Department of Neurosurgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
Clinical Neurophysiology Practice
|April 9, 2025
Summary
Muscle excitability testing in the tibialis anterior muscle shows no sex-based differences. Age influences parameters only after 60 years, establishing new normative data for healthy individuals.
Area of Science:
- Neuromuscular physiology
- Biomedical engineering
- Clinical neurophysiology
Background:
- Establishing normative data for muscle excitability testing is crucial for accurate clinical interpretation.
- Previous research has not comprehensively defined age and sex influences on tibialis anterior muscle excitability.
Purpose of the Study:
- To establish normative data for muscle excitability testing in the tibialis anterior muscle of a healthy population.
- To determine the dependence of these parameters on age and sex.
Main Methods:
- Retrospective analysis of muscle velocity recovery cycle recordings (1, 2, and 5 conditioning stimuli) from 197 healthy subjects.
- Analysis of frequency ramp recordings from 151 healthy subjects for age and sex differences.
Main Results:
- No significant differences in muscle excitability parameters were found between sexes.
- Age-related differences were minimal and primarily observed in subjects over 60 years.
- Specific parameters like muscle relative refractory period, early supernormality, and latency showed slight age-dependent changes.
Conclusions:
- Normative data for muscle excitability testing in the tibialis anterior muscle have been established.
- Muscle excitability testing is not influenced by sex.
- Age influences muscle membrane potential parameters only from 60 years onwards.
