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Table 2 Mean onset times prior to impact (MSec) for each muscle

From: Electromyographic analysis of selected shoulder muscles during a rugby football tackle

Muscle Mean Onset time Confidence interval (95%)
Pectoralis Major 20.7 16.3–25.1
Biceps Brachii 27 23–31
Latissimus Dorsi 37.8 35–40.6
Serratus Anterior 41.2 38.2–44.2
Infraspinatus 35.4 30.6–40.2