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Table 6 Calculated RMS (%MVIC) differences between the mean (∆RMS) and percentage of the differences (% dif) between conditions for all performed exercises and investigated muscles

From: Neuromuscular shoulder activity during exercises with different combinations of stable and unstable weight mass

 Conditions
ExerciseMuscleP vs PGP vs PWP vs PWGPG vs PWPG vs PWGPW vs PWG
∆RMS% dif∆RMS% dif∆RMS% dif∆RMS% dif∆RMS% dif∆RMS% dif
In/Ex rotationU.TA12081.12020.315392.1100*63.33314.7133*76.1
DE61*39.575.571*44.454*34.2105.364*39.3
L.TA72*41.426*17.190*49.246*24.618*8.164*32.5
LD25*53.8616.133*65.219*38.4812.727*50.5
SA117*68.940*30.4154*81.877*40.537*15114*54.7
PE1938.42656.41631.47*19.237.110*26.2
Ab/AdU.TA100*63.32722.189*58.473*42.6115.36237.2
DE73*58.91616.793*69.657*43.22011.677*54.3
L.TA97*62.999.291*66.288*60.763.182*57.6
LD15*47.5415.419*56.711*32.749.615*42.1
SA89*70.316*17.890*70.773*54.310.674*54.7
PE713.9511.1510.0122523.810*22.9
diagonal F/EU.TA72*43.553.765*40.16740.073.460*36.6
DE49*28.953.34426.44425.652.53923
L.TA71*45.12820.660*39.54325.1115.73219.3
LD14*33.312.717*39.113*30.635.816*36.3
SA54*35.42316.753*353118.910.63018.3
PE2735.31116.130*38.516*19.433.31922.7
  1. P: empty pipe (0.5 kg); PG: weight (stable mass; 4.5 kg); PW: water (unstable mass; 1 kg); PWG: water + weight (unstable mass; 4.5 kg); U/L. TA: upper/lower trapezius; DE deltoid, LD latissimus dorsi, SA serratus anterior, PE pectoralis major; *: statistical significant difference p < 0.008