Abstract:
CONTEXT:Studies have found that a 20% reduction in energy generation from the lumbopelvic-hip complex during overhead throws leads to a 34% increase in load on the shoulder. OBJECTIVE:The purpose of this study was to assess the effects of lumbopelvic-hip complex stability, via the single leg squat assessment, on throwing mechanics of softball athletes. DESIGN:Prospective cohort study. SETTING:Laboratory setting. PARTICIPANTS:A total of 50 softball athletes (164.0 [104.0] cm, 65.6 [11.3] kg, 16.3 [3.8] y, 8.61 [3.62] y of experience) performed 3 overhead throws and a single leg squat on each leg. INTERVENTION:Four stability groups were derived: (1) stable on both legs (bilateral stability), (2) unstable on the throwing side leg (TS instability) and stable on the nonthrowing side leg, (3) unstable on the nonthrowing side leg (NTS instability) and stable on the throwing side leg, and (4) unstable on both legs (bilateral instability). All throws were analyzed across 4 throwing events: foot contact (FC), maximum external shoulder rotation (MER), ball release (BR), and maximum internal shoulder rotation (MIR). MAIN OUTCOME MEASURES:Mann-Whitney U tests revealed significant differences between the bilateral stability and the TS instability groups in trunk flexion at BR; the bilateral stability and the NTS instability groups in trunk flexion at BR, shoulder horizontal abduction at FC, shoulder rotation at FC, and pelvis flexion at MIR; the TS instability and the bilateral instability groups in trunk rotation at FC; and the NTS instability and the bilateral instability groups in trunk flexion at MER and shoulder rotation at FC. CONCLUSION:These findings demonstrate the different mechanisms in which energy can be lost through lumbopelvic-hip complex instability as evident in throwing mechanics. The findings from this study suggest that the current methods used for classification could act as a tool for coaches, physicians, and athletic trainers when assessing their athletes' injury susceptibility.
journal_name
J Sport Rehabiljournal_title
Journal of sport rehabilitationauthors
Gilmer GG,Washington JK,Dugas JR,Andrews JR,Oliver GDdoi
10.1123/jsr.2017-0276subject
Has Abstractpub_date
2019-02-01 00:00:00pages
196-204issue
2eissn
1056-6716issn
1543-3072journal_volume
28pub_type
杂志文章abstract:CONTEXT:Rest, ice, compression, and elevation are commonly recommended immediately after injury. Traditionally, ice bag (IB) with elastic wrap compression has been utilized; however, recently intermittent cryocompression units are being used. Limited research has evaluated tissue temperature decreases with intermittent...
journal_title:Journal of sport rehabilitation
pub_type: 杂志文章
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更新日期:2019-02-01 00:00:00
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journal_title:Journal of sport rehabilitation
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journal_title:Journal of sport rehabilitation
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journal_title:Journal of sport rehabilitation
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journal_title:Journal of sport rehabilitation
pub_type: 杂志文章
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journal_title:Journal of sport rehabilitation
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journal_title:Journal of sport rehabilitation
pub_type: 杂志文章,随机对照试验
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pub_type: 杂志文章,评审
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pub_type: 临床试验,杂志文章
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journal_title:Journal of sport rehabilitation
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更新日期:2011-08-01 00:00:00
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journal_title:Journal of sport rehabilitation
pub_type: 杂志文章,评审
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journal_title:Journal of sport rehabilitation
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journal_title:Journal of sport rehabilitation
pub_type: 杂志文章,随机对照试验
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更新日期:2015-11-01 00:00:00
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