Abstract:
PURPOSE:This prospective magnetic resonance (MR) imaging study investigated the development of symptomatic pars lesions in the lumbar spine of adolescent cricket fast bowlers. METHODS:Annual MR examinations of the lumbar spine in male fast bowlers (N = 51) and swimmers (N = 20) without a prestudy history of symptomatic back injury were conducted to identify stress-induced pars injuries over 4 and 2 yr periods, respectively. RESULTS:Symptomatic L4 and L5 pars lesions developed in 11 of 51 and 1 of 51 of the bowlers, respectively. Preexisting L5 lesions were observed in both bowlers (10 of 51) and swimmers (4 of 20). No significant difference existed between the proportion of bowlers and swimmers with preexisting L5 lesions (P = 1.00, Fisher's exact test). In contrast, bowlers had a significantly greater proportion of L4 pars lesions compared with swimmers, with 22% of the bowlers developing L4 injuries during the study, whereas there were no L4 lesions in the swimmers (P = 0.027, Fisher's exact test). The symptomatic L4 lesions in the bowlers developed between 15 and 17 yr of age, and all were unilateral lesions lateralized to the nonbowling-arm side. The MR characteristics of the L4 pars lesions were consistent with a stress fracture through the cortical bone. Of the acquired L4 lesions in the bowlers, 4 of 11 and 7 of 11 developed in individuals with and without preexisting L5 defects, respectively. No significant association existed between the acquired L4 pars lesions and preexisting L5 defects in the bowlers (P = 0.216, Fisher's exact test). CONCLUSION:Fast bowling was directly associated with the development of symptomatic pars lesions of the lumbar spine, particularly unilateral L4 stress lesions, in a significant proportion of the adolescent bowlers examined in this prospective MR study.
journal_name
Med Sci Sports Exercjournal_title
Medicine and science in sports and exerciseauthors
Engstrom CM,Walker DGdoi
10.1249/01.mss.0000241642.82725.acsubject
Has Abstractpub_date
2007-01-01 00:00:00pages
28-33issue
1eissn
0195-9131issn
1530-0315pii
00005768-200701000-00006journal_volume
39pub_type
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journal_title:Medicine and science in sports and exercise
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更新日期:2009-04-01 00:00:00
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journal_title:Medicine and science in sports and exercise
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journal_title:Medicine and science in sports and exercise
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pub_type: 杂志文章,随机对照试验
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pub_type: 杂志文章,随机对照试验
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1097/00005768-199805000-00018
更新日期:1998-05-01 00:00:00
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pub_type: 杂志文章,多中心研究
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更新日期:2018-05-01 00:00:00
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journal_title:Medicine and science in sports and exercise
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doi:
更新日期:1991-03-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章,随机对照试验
doi:10.1249/MSS.0000000000001984
更新日期:2019-09-01 00:00:00
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更新日期:2014-12-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章,评审
doi:
更新日期:1984-08-01 00:00:00
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更新日期:2016-07-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 临床试验,杂志文章
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更新日期:2005-11-01 00:00:00
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更新日期:2018-12-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1097/00005768-200008000-00002
更新日期:2000-08-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 临床试验,杂志文章
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
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journal_title:Medicine and science in sports and exercise
pub_type: 临床试验,杂志文章
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更新日期:2000-09-01 00:00:00
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更新日期:2016-10-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1991-02-01 00:00:00
abstract:PURPOSE:Physical activity guidelines recommend at least 150 min of moderate-intensity physical activity (MPA), 75 min of vigorous-intensity physical activity (VPA), or combination of MPA and VPA. However, few epidemiological studies have examined whether the general population can derive equal health benefits from MPA ...
journal_title:Medicine and science in sports and exercise
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更新日期:2018-04-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
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更新日期:2006-06-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1097/00005768-199604000-00019
更新日期:1996-04-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:
更新日期:1981-01-01 00:00:00
abstract::Acute aerobic exercise improves mood and activates the endocannabinoid (eCB) system in physically active individuals; however, both mood and eCB responses to exercise may vary based on habitual levels of physical activity. PURPOSE:This study aimed to examine eCB and mood responses to prescribed and preferred exercise...
journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
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更新日期:2017-08-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
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更新日期:2015-02-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:
更新日期:1987-06-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
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更新日期:2016-01-01 00:00:00