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Table 1 Average myoelectric activity (expressed as %MVC) for each muscle studied across 4 different shoulder extension exercises.

From: Variations in muscle activation levels during traditional latissimus dorsi weight training exercises: An experimental study.

Muscle Exercise Performed
  Pulldown1 Reverse2 Slack SR3 Retract SR4
Lats 26.23 [10.1] 22.37 [9.1] 30.10 [14.9] 37.08 [14.04]
Diff From*: 3 3 1,2 -
Biceps 15.20 [8.05] 19.89 [6.8] 18.21 [7.1] 19.92 [10.7]
Diff from - - - -
MTR 22.72 [11.5] 20.51 [10.9] 29.77 [11.6] 35.50 [17.6]
Diff from: - 3 2 -
Ratio Lats:Biceps 175.22 [84.4] 111.48 [53.2] 156.31 [81.0] 186.48 [96.0]
Diff from: 2 1,3 2 -
  1. *This row indicates which exercise [denoted by a superscripted column number [i.e 1 = pulldown exercise] results in statistically significant [p < .05] muscle activity. This only compares across columns [different exercises] for the same muscle group. It doesn't compare different muscle groups within an exercise. Lats=Latissimus Dorsi, Biceps = Biceps Brachii, Ratio Lats:Biceps is the average muscle activation ratio between the latissimus dorsi and biceps brachii for each exercise tested. Pulldown = pronated grip pulldown, Reverse = Supinated grip pulldown, Slack = Seated row allowing scapulae protraction, Retract = Seated row with encouragement to retract the scapulae