background: the extent of bone minerals density (bmd) gained during childhood is good index for bmd in adulthood. recent studies imply that exercise increases bmd however, there are rare studies about the best ages in which exercise gives the highest effect on children’s bmd. this study was carried out with the aim of comparing the extent of exercise effect on various ages on bmd of boys of ila...

the aim of this study was to compare the effects of substitution of upper and lower body exercises during rest intervals on the quantity of upper body performance and lactate with 75% 1rm (repetition maximum). for this purpose, 15 trained bodybuilders (age 20.9±1.9 years, weight 74.8±5.2 kg and aerobic power 35.48±8.6 ml/kg/min) took part in this study voluntarily. all subjects performed four t...

the purpose of this study was to determine whether a 45 bp insertion/deletion (i/d) polymorphism in human uncoupling protein 2 (hucp2) gene was associated with changes in several cardiovascular risk and physical fitness factors in response to combined exercise during 12 weeks in korean middle-aged women. the changes in physiological parameters after combined exercise during 12 weeks were compar...

about a decade ago, carbohydrate mouth rinsing was shown to enhance endurance exercise performance. this improvement was more pronounced in a fasted compared to a fed state, suggesting that the ergogenic effect of carbohydrate mouth rinse is dependent on endogenous carbohydrate storage. hence, indirectly highlights the potential use of carbohydrate mouth rinse as a potential strategy to mitigat...

Proteinuria and hematuria are common during exercise. Proteinuria is usually due to glomerular or tubular changes or to an excessive production of protein as in myeloma. Certain clinical conditions can, however, result in a functional or temporary proteinuria, especially during pregnancy, fever, orthostasis, or following physical activity. Sport-related proteinuria following marching, exercise,...

A definite increase in the percentage of reticulocytes occurs after exercise in animals previously kept to a sedentary life. Concomitant changes in the hemoglobin percentage, plasma-cell ratio, and red count offer evidence in addition to that already reported by the author of the occurrence of an increase in blood destruction under such circumstances. Replacement by transfusion of blood destroy...

ELECTROCARDIOGRAPHIC (ECG) recording during exercise, employed for years by work physiologists, has only recently arrived on the scene of cardiovascular investigations in clinical, epidemiological, and sports medical areas. This has come about from interest in the import of ECG events observed during activity, from the improved safety provided by monitoring performance tests, and from technical...

2. As exercise progresses from low to moderate intensity, e.g., 25-65% VO2max, the rate of fatty acid mobilization from adipose tissue into blood plasma declines, whereas the rate of total fat oxidation increases due to a relatively large use of intramuscular triglycerides. Intramuscular triglycerides also account for the characteristic increase in fat oxidation as a result of habitual enduranc...