大学棒球投手投球量与手臂酸痛之间的关系。
THE RELATIONSHIP BETWEEN PITCHING VOLUME AND ARM SORENESS IN COLLEGIATE BASEBALL PITCHERS.
作者信息
Lazu Angel L, Love Shawn D, Butterfield Timothy A, English Robert, Uhl Tim L
机构信息
Division of Athletic Training, Department of Rehabilitation Sciences, College of Health Science, University of Kentucky, Lexington, KY, USA.
Department of Sports Medicine, University of Louisville, Louisville, KY, USA.
出版信息
Int J Sports Phys Ther. 2019 Feb;14(1):97-106.
BACKGROUND
Excessive baseball pitch volume has been associated with increased risk of injury in adolescents. However, many collegiate athletes report non-time loss injuries over the course of the season. It is unknown how pitch volume throughout a collegiate baseball season affects arm soreness.
PURPOSE
The primary purpose of this study was to determine the relationship between pitch volume and self-reported arm soreness. A secondary purpose was to determine the relationship between change in pitch volume and change in arm soreness over the course of the season for collegiate baseball pitchers.
STUDY DESIGN
Prospective Cohort.
METHODS
Seven collegiate baseball pitchers volunteered to participate in a yearlong prospective study. The seven pitchers reported daily pitch volume and level of soreness from the fall through spring collegiate baseball season during practices and games. The athletic trainer, a member of the research team, tracked athletic exposures and injuries for the entire season. Frequency counts of athletic exposures were categorized by game, practice, conditioning and injury status. Frequency counts of pitch volume was categorized by game, game bullpen, practice bullpen, flat ground, long toss and warm-up pitches. The pitch volume and soreness levels for each athlete were used to determine the relationship between these two variables using a Pearson correlation.
RESULTS
The seven pitchers were involved with 1,256 athletic exposures and a total of 54,151 throws, averaging 7,735 throws per player for the entire season. The pitch volume and self-reported arm soreness for the entire season revealed a correlation of r = .72 (p = .004). The relationship between change in pitch volume and change in arm soreness was r = .635 (p = .001) over the season.
CONCLUSION
There was a moderate significant correlation between arm soreness and pitch volume across the whole season. This relationship was maintained when evaluating weekly changes.
LEVEL OF EVIDENCE
背景
青少年棒球投球量过多与受伤风险增加有关。然而，许多大学生运动员在赛季中报告有非失时伤病。目前尚不清楚整个大学棒球赛季的投球量如何影响手臂酸痛。
目的
本研究的主要目的是确定投球量与自我报告的手臂酸痛之间的关系。次要目的是确定大学棒球投手在赛季过程中投球量的变化与手臂酸痛变化之间的关系。
研究设计
前瞻性队列研究。
方法
七名大学棒球投手自愿参加为期一年的前瞻性研究。这七名投手在秋季至春季的大学棒球赛季的训练和比赛中报告每日投球量和酸痛程度。运动训练师作为研究团队的一员，跟踪了整个赛季的运动暴露情况和伤病情况。运动暴露的频率计数按比赛、训练、体能训练和伤病状态进行分类。投球量的频率计数按比赛、比赛牛棚训练、训练牛棚训练、平地训练、长传训练和热身投球进行分类。使用皮尔逊相关性分析每位运动员的投球量和酸痛程度，以确定这两个变量之间的关系。
结果
这七名投手参与了1256次运动暴露，总共投球54151次，每位球员整个赛季平均投球7735次。整个赛季的投球量与自我报告的手臂酸痛之间的相关性为r = 0.72（p = 0.004）。在整个赛季中，投球量变化与手臂酸痛变化之间的关系为r = 0.635（p = 0.001）。
结论
整个赛季手臂酸痛与投球量之间存在中度显著相关性。在评估每周变化时，这种关系依然存在。
证据水平
4级。
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