Medicine and science in sports and exercise
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Med Sci Sports Exerc · Jul 2006
Autonomic recovery from peak arm exercise in fit and unfit individuals with paraplegia.
Altered autonomic cardiovascular control in persons with paraplegia may reflect peripheral sympathetic denervation caused by the injury or deconditioning due to skeletal muscle paralysis. Parameters of autonomic cardiovascular control may be improved in fit persons with paraplegia similar to effects reported in the noninjured population. ⋯ These data suggest that fit individuals with paraplegia have improved cardiac autonomic control during the postexercise recovery period compared with their unfit counterparts.
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Med Sci Sports Exerc · Jul 2006
Case ReportsExertional heat stroke during a cool weather marathon: a case study.
A well-trained male runner in his late 30s collapsed 10 m before the finish line, nearly completing the 42.1-km marathon course in 3 h, 15 min. He was responsive to pain, agitated, diaphoretic, and unable to walk. The race start temperature was 6 degrees C (43 degrees F) with relative humidity of 99% and the 3-h temperature was 9.5 degrees C (49 degrees F) with a 62% relative humidity. ⋯ He left the hospital in 5 d and has now returned to running without problems, although several months passed before he felt well while exercising. Exertional heat stroke can occur in cool conditions, and rectal temperature should be checked in all collapsed runners who do not progress with rapid recovery of vital signs and cognitive function. Runners should be instructed not to compete when ill and should not use nonparticipant pacers during the runs.
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Med Sci Sports Exerc · Jul 2006
Randomized Controlled TrialGirls' activity levels and lesson contexts in middle school PE: TAAG baseline.
To assess girls' physical activity (PA) in middle school physical education (PE) as it relates to field site, lesson context and location, teacher gender, and class composition. ⋯ Substantial variation in the conduct of PE exists. Proportion of lesson time girls spent accruing MVPA (i.e., 37.9%) fell short of the Healthy People 2010 objective of 50%. Numerous possibilities exist for improving girls' PA in PE.
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Med Sci Sports Exerc · Jul 2006
A 10-yr study of smokeless tobacco use in a professional baseball organization.
Professional baseball players frequently use smokeless tobacco and are at risk of oral leukoplakia. There are limited long-term data on current trends in tobacco use and resultant oral health in this high-risk group. The purpose of this study was to monitor the prevalence of smokeless tobacco use in a professional baseball organization over a 10-yr period, looking for changes in the patterns of use and resultant changes in the incidence of oral leukoplakia. ⋯ The prevalence of smokeless tobacco use showed a steady decline in this professional baseball organization over the 10 yr of the study, with a concomitant decline in the prevalence of oral leukoplakia in this population. We postulate that changes in league rules regarding tobacco use and regular education and support for tobacco cessation might explain the declining use.