Medicine and science in sports and exercise
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Med Sci Sports Exerc · May 2010
Pressure pain sensitivity mapping in experimentally induced lateral epicondylalgia.
The aim of this study was to apply topographical techniques to investigate changes in pressure pain sensitivity after induction of delayed onset muscle soreness (DOMS) in the elbow region in healthy subjects. ⋯ The study provides new key information regarding mechanical pain hyperalgesia in experimentally induced LE. Topographical pressure pain sensitivity maps from the elbow region revealed heterogeneously distributed mechanical sensitivity before and during DOMS. The most sensitive localizations for PPT assessment correspond to the muscle belly of the extensor carpi radialis brevis. Our results support the implication of the extensor carpi radialis brevis muscle in LE.
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Med Sci Sports Exerc · Mar 2010
Randomized Controlled TrialInfluence of brisk walking on appetite, energy intake, and plasma acylated ghrelin.
This study examined the effect of an acute bout of brisk walking on appetite, energy intake, and the appetite-stimulating hormone-acylated ghrelin. ⋯ This study demonstrates that, despite inducing a moderate energy deficit, an acute bout of subjectively paced brisk walking does not elicit compensatory responses in acylated ghrelin, appetite, or energy intake. This finding lends support for a role of brisk walking in weight management.
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Med Sci Sports Exerc · Jan 2010
Case ReportsSickle cell trait and fatal rhabdomyolysis in football training: a case study.
We report the athletic, the clinical, and the pathological details of a case of fatal rhabdomyolysis during training in a college football player with sickle cell trait (SCT) who collapsed minutes after running 16 successive sprints of 100 yd each. The player, 19 yr old, African American, was apparently healthy when he took the field for the conditioning run. No exertional heat illness was present. ⋯ In SCT, maximal, sustained exercise evokes four forces that can foster sickling: hypoxemia, acidosis, hyperthermia, and red cell dehydration. The setting, the clinical and laboratory features, and the clinicopathological correlation here suggest that the fulminant rhabdomyolysis and its fatal sequelae were from exertional sickling. These data suggest that screening and simple precautions for SCT may be warranted to prevent tragedies like this and enable all athletes with SCT to thrive in their sports.
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Med Sci Sports Exerc · Sep 2009
Randomized Controlled TrialComparative efficacy of water and land treadmill training for overweight or obese adults.
No known previous research has been published to explore the efficacy of underwater treadmill (UTM) exercise training for the obese. Thus, the purpose of this study was to compare changes in physical fitness, body weight, and body composition in physically inactive, overweight, and obese adults after 12 wks of land treadmill (LTM) or UTM training. ⋯ UTM and LTM training are equally capable of improving aerobic fitness and body composition in physically inactive overweight individuals, but UTM training may induce increases in LBM.
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Med Sci Sports Exerc · Aug 2009
Plasma vitamins, amino acids, and renal function in postexercise hyperhomocysteinemia.
Several studies have assessed the effect of the physical activity on plasma homocysteine (Hcy) concentrations, although the findings have been contradictory, and the exact mechanism by which plasma Hcy concentrations varied after an acute intense exercise remains unknown. ⋯ Our results show that higher plasma concentrations of tHcy after an acute intense exercise are associated to higher concentrations of rHcy, and this effect is independent of the type of exercise, vitamin status, or amino acid metabolic stress but could be related to potential changes in the renal function.