title: The Effect of Performing Bi- and Unilateral Row Exercises on Core Muscle Activation.
abstract: The purpose of the study was to compare core muscle activation in 3 different row exercises (free-weight bent-over row, seated cable row and machine row) performed unilaterally and bilaterally, at matched effort levels. 15 resistance-trained men (26.0±4.4 years, 81.0±9.5 kg, 1.81±0.07 m) performed the exercises in randomized order. For erector spinae and multifidus, EMG activities in unilateral machine- and cable row were 60-63% and 74-78% of the bilateral performance (P≤0.036). For external oblique, the EMG activities recorded during bilateral exercises were 37-41% of the unilateral performance (P≤0.010). In unilateral cable- and machine rows, the EMG activities in external oblique and multifidus were 50-57% and 70-73% of the free-weight row (P≤0.002). In bilateral free-weight row, EMG activity in erector spinae was greater than bilateral machine- (+34%, P=0.004) and unilateral free-weight rows (+12%, P=0.016). For rectus abdominis there were no significant differences between conditions. In conclusion, 1) free-weight row provided greater EMG activity in erector spinae (bilaterally and unilaterally) and multifidus (unilaterally) than machine row; 2) unilateral performance of exercises activated the external oblique more than bilateral performance, regardless of exercise; and 3) generally bilateral performance of exercises provided higher erector spinae and multifidus EMG activity compared to unilateral performance.
authors.affiliation: Faculty of Teacher Education and Sport, Sogn og Fjordane University College, Sogndal, Norway.
authors.forename: A
authors.initials: A
authors.lastname: Saeterbakken
authors.affiliation: Faculty of Teacher Education and Sport, Sogn og Fjordane University College, Sogndal, Norway.
authors.forename: V
authors.initials: V
authors.lastname: Andersen
authors.affiliation: Faculty of Teacher Education and Sport, Sogn og Fjordane University College, Sogndal, Norway.
authors.forename: A
authors.initials: A
authors.lastname: Brudeseth
authors.affiliation: Faculty of Teacher Education and Sport, Sogn og Fjordane University College, Sogndal, Norway.
authors.forename: H
authors.initials: H
authors.lastname: Lund
authors.affiliation: Department of Public Health and General Practice, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway.
authors.forename: M S
authors.initials: MS
authors.lastname: Fimland
mesh_terms: D000009:Abdominal Muscles / Q000502:physiology*; D000328:Adult; D064131:Back Muscles / Q000502:physiology*; D004576:Electromyography; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D006801:Humans; D008297:Male; D064170:Paraspinal Muscles / Q000502:physiology; D017568:Rectus Abdominis / Q000502:physiology; D055070:Resistance Training; D055815:Young Adult