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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
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