the respiratory exchange ratio is higher in older subjects, but is reduced by aerobic exercise training
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Elevated intramyocellular lipid concentration in obese subjects is not reduced after diet and exercise training.
To determine the effects of weight loss on intramyocellular energy substrates, vastus lateralis muscle biopsies were taken from six obese subjects (body mass index 34 +/- 5 kg/m(2)) before, after 15 wk of energy restriction (ER; -700 kcal/day), and after a further average 20.7 +/- 1.6 wk of endurance training plus low-fat diet (ET-LFD). Body weight fell from 100 +/- 6 to 89 +/- 6 kg during ER a...
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The postmenopausal phase is associated with an accelerated rate of rise in the prevalence of endothelial dysfunction and hypertension and the incidence of cardiovascular disease is also higher in postmenopausal than in premenopausal women of similar age. Although much is known about the beneficial effects of estrogen on vascular function, the mechanisms by which changes in the hormonal environm...
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A novel commercial training mask purportedly allows for combined respiratory muscle training and altitude exposure during exercise. We examined the mask's ability to deliver on this claim. Ten men completed three bouts of treadmill exercise at a matched workload (60%VO2peak) in a controlled laboratory environment. During exercise, the mask was worn in 2 manufacturer-defined settings (9,000 ft [...
متن کاملAerobic exercise training and improved neuropsychological function of older individuals.
The effects of a four month aerobic exercise conditioning program on neuropsychological test performance, depression indices, sensory thresholds, and visual acuity of 55-70 year old sedentary individuals were evaluated. Aerobically trained subjects were compared with two age-matched control groups of subjects: those who trained with strength and flexibility exercises and others who were not eng...
متن کاملAdherence of older women with strength training and aerobic exercise
BACKGROUND Participation of older people in a program of regular exercise is an effective strategy to minimize the physical decline associated with age. The purpose of this study was to assess adherence rates in older women enrolled in two different exercise programs (one aerobic exercise and one strength training) and identify any associated clinical or functional factors. METHODS This was a...
متن کاملThe Respiratory Exchange Ratio is Associated with Fitness Indicators Both in Trained and Untrained Men: A Possible Application for People with Reduced Exercise Tolerance
BACKGROUND The respiratory exchange ratio (RER) indirectly shows the muscle's oxidative capacity to get energy. Sedentarism, exercise and physically active lifestyles modify it. For that reason, this study evaluates the associations between RER during sub-maximum exercise and other well established fitness indicators (body fat, maximum heart rate, maximum O(2) uptake, workload, and lactate thre...
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عنوان ژورنال:
international journal of endocrinology and metabolismجلد ۹، شماره ۱، صفحات ۲۶۴-۲۷۰
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