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Fig. 1 | BMC Musculoskeletal Disorders

Fig. 1

From: Spasm and flexion-relaxation phenomenon response to large lifting load during the performance of a trunk flexion-extension exercise

Fig. 1

a. A subject during flexion phase of a flexion–extension test in 15 kg lifting condition. b. The exemplar averaged bilateral EMG amplitude (MVC%) of a participant during flexion–extension performance with 0 kg hand load condition. The parallel vertical dotted lines represent EMG-off (left) and EMG-on (right) timing. TR = the time of relaxation period from EMG-off to EMG-on

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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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