Are kinetic chain rowing exercises relevant in shoulder and trunk injury prevention training?

Abstract
Background Recent guidelines emphasise the importance of functional kinetic chain exercises during injury prevention training. Knowledge of muscle activation levels during various unilateral rowing exercises is lacking. Objective To describe and compare the activation levels of scapulothoracic and lumbopelvic muscle parts during eight variations of the high rowing exercise. Design Descriptive study. Exercise performance was standardised and individualised based on height, age and body weight. Setting Controlled laboratory study at Ghent University (Belgium). Participants 30 young healthy volunteers with a history of being active in sports and able to perform the exercises correctly. Interventions Activation levels of the upper trapezius (UT) and lower trapezius (LT) muscles of the dominant shoulder, and multifidus (MF) and erector spinae (ES) muscles at both sides of the trunk were investigated. Exercises were performed in front of a pulley apparatus. Main outcome measurements Individual muscle activation levels captured by surface Electromyography. Results Shoulder muscle activation was characterised by superior LT (>12.5% MVIC) over UT (21% MVIC) over ES (Conclusion High rowing exercises recruit posterior shoulder and trunk muscles relevant in injury prevention training. Unilateral rowing during a single leg squat position or movement seems most favourable for athletic injury prevention training purposes.