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Utility of electromyographic fatigue threshold during treadmill running
Author(s) -
Crozara Luciano F.,
Castro Alex,
De Almeida Neto Antonio F.,
Laroche Dain P.,
Cardozo Adalgiso C.,
Gonçalves Mauro
Publication year - 2015
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.24658
Subject(s) - electromyography , biceps , treadmill , medicine , muscle fatigue , physical medicine and rehabilitation , vastus lateralis muscle , vastus medialis , physical therapy , anatomy , skeletal muscle
: We investigated 2 different methods for determining muscle fatigue threshold by electromyography (EMG). Methods : Thirteen subjects completed an incremental treadmill running protocol for EMG fatigue threshold (EMG FT ) determination based on the critical power concept (EMG FT 1) and the breakpoint in the linear relationship between EMG amplitude and exercise intensity (EMG FT 2). Then, both the EMG FT 1 and EMG FT 2 were tested in a continuous treadmill running protocol. EMG was recorded from the rectus femoris (RF), vastus lateralis (VL), biceps femoris (BF), and lateral gastrocnemius (LG) muscles. Results : For BF, EMG FT 2 was higher than EMG FT 1, and EMG FT 1 for BF was lower than EMG FT 1 for LG. EMG of RF was higher at EMG FT 2 than at EMG FT 1, and LG EMG was lower at EMG FT 2. Conclusions : EMG FT can be determined during a single treadmill running test, and EMG FT 1 may be the most appropriate method to estimate the muscle fatigue threshold during running. Muscle Nerve 52 : 1030–1039, 2015