Mixed
Using a single Maximum Voluntary Isometric Contraction (MVIC) position to normalize gluteus maximus EMG data is invalid due to significant individual variation; researchers must use multiple MVIC positions to ensure accuracy.
If you are normalizing EMG data for the gluteus maximus, do not rely on a single 'prone' test. Individual anatomy causes some people to generate higher EMG in standing positions. To get accurate normalization, test multiple positions (e.g., prone and standing) and use the highest value obtained for that specific subject as the baseline.
Therefore, it is recommended that investigators employ multiple MVIC positions, when possible, to ensure accuracy.
Why this rating
Small sample size (n=13), non-significant statistical difference between the two tested positions, but clear demonstration of individual variation.
Source
A comparison of two gluteus maximus EMG maximum voluntary isometric contraction positions
Bret Contreras et al. · PeerJ · 2015
DOI 10.7717/peerj.1261
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