Shoulder motions during the golf swing in male amateur golfers.

STUDY DESIGN Prospective descriptive biomechanical analysis of shoulder motion in golf. OBJECTIVE To characterize normal shoulder motion during the driving swing in male recreational golfers of various age groups. BACKGROUND Shoulder trauma accounts for approximately 12% of all golf-related injuries. To design sport-specific rehabilitation programs for the injured golfer and exercise programs for the healthy golfer, clinicians and teachers need quantitative information describing range of motion requirements about the shoulder for the amateur player. METHOD AND MEASURE: Sixty-five male golfers were divided into 3 age groups: college, middle, and senior. A high-speed, 6-camera motion analysis system recorded 3-dimensional bilateral shoulder motion (vertical elevation, horizontal adduction, external rotation, and shoulder tum) for 3 swings of the driver. Group means for ranges and functional end points of motion were compared using a single-factor 1-way ANOVA (alpha = 0.05). RESULTS All maximum values of shoulder motion were lower in the senior group than in the other 2 groups. At peak backswing, senior golfers exhibited 38 degrees less right-side shoulder external rotation than college golfers. However, from address, seniors horizontally abduct the right arm 18 degrees more than college golfers. In the older golfers, total range of motion was reduced for both shoulders in the vertical plane and for the left shoulder in the horizontal plane. CONCLUSIONS This study describes shoulder motion for asymptomatic golfers of various age groups. These data may serve as a baseline reference for assessing disease- or injury-related changes in the golf swing and for designing sport-specific exercise and rehabilitation programs.