EMG analysis of the scapular muscles during a shoulder rehabilitation program.
The purpose of this study was to determine which exercises most effectively use the scapular muscles. Eight muscles in 9 healthy subjects were studied with indwelling electromyographic electrodes and cinematography while performing 16 exercises. The 8 muscles studied were the upper, middle, and lower trapezius; levator scapula; rhomboids; pectoralis minor; and the middle and lower serratus anterior. Each exercise was divided into arcs of motion and the electromyographic activity was quantified as a percentage of the maximal manual muscle test. The optimal exercises for each muscle were identified based on intensity (greater than 50% maximal manual muscle test) and duration (over at least 3 consecutive arcs of motion) of the muscle activity. Twelve of the exercises qualified as top exercises for all of the muscles. On further analysis, a group of 4 exercises was shown to make up the core of a scapular muscle strengthening program. Those 4 exercises include scaption (scapular plane elevation), rowing, push-up with a plus, and press-up.
Moseley
J B
JB
Division of Orthopaedic Surgery, Baylor College of Medicine, Houston, Texas.
Jobe
F W
FW
Pink
M
M
Perry
J
J
Tibone
J
J
D000328:Adult; D004576:Electromyography; D015444:Exercise; D005260:Female; D006801:Humans; D008297:Male; D009068:Movement / Q000502:physiology*; D009132:Muscles / Q000502:physiology*; D012399:Rotation; D012540:Scapula / Q000502:physiology*