1,720,969 research outputs found
DIETARY POLYUNSATURATED FATTY-ACIDS AND PEROXIDATIVE RISKS IN SPORT PRACTICE - ALTERNATIVES
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Aspetti metabolici, fisiologici e metodologici dell’ipertrofia muscolare nel recupero funzionale.
No full textNell’ambito del recupero funzionale spesso grossa attenzione viene posta agli aspetti metodologici e fisiologici della componente propriocettiva e neurologica mentre gli aspetti collegati al trofismo muscolare, pur di fondamentale importanza in un iter corretto di “restitutio ad integrum”, sono trascurati o trattati rifacendosi a concetti spesso obsoleti. In realtà le conoscenze sugli aspetti dell’ipertrofia muscolare, pur non avendo fatto ancora piena luce su tutte le cause coinvolte in questo fenomeno, si sono molto ampliate negli ultimi anni: la conoscenza degli aspetti fisiologici e metabolici dell’ipertrofia muscolare può quindi diventare di fondamentale importanza nell’impostare protocolli di intervento che agiscano con la massima efficacia, il minor rischio e nel minor tempo possibile sull’aumento del trofismo muscolare nel soggetto reduce da infortuni o da interventi chirurgici. Tenteremo quindi una breve disamina dei meccanismi alla base del fenomeno dell’ipertrofia muscolare
CARBOHYDRATE SUPPLEMENTATION AND SPORT. A REVIEW.
No full textCarbohydrate is an essential fuel for prolonged, strenuous exercise, although the
carbohydrate stores of the body are limited. Research studies have provided
evidence that carbohydrate depletion is associated with fatigue, decrease in
exercise intensity, and even exercise cessation. With the appropriate diet and
supplementation, however, the carbohydrate stores of the body can be
substantially increased and exercise performance improved by carbohydrate
supplementation before and during exercise or at the end of exercise. While
early research focused on means of increasing the muscle glycogen stores in
preparation for competition, recent research has focused on the most effective
means of promoting its replenishment during the early hours of recovery. In this
review, the role of carbohydrate supplementation for increasing carbohydrate
stores before exercise, maintaining blood glucose during exercise, and the rapid replenishment of the carbohydrate stores after exercise are discussed
Effects of three distinct protocols of fitness training on body composition, strength and blood lactate RID E-2069-2011
No full textAIM:
Circuit training is a very popular methodology in fitness program because it allows to join together cardiovascular and strength training. The purpose of this study was to determine the physiological effects of circuit training performed at different intensities on body composition, strength and blood lactate in middle-aged subjects who had recently undergone only minimum physical training.
METHODS:
Forty participants (aged 50-65) were assigned to a control group (CG) or to one of the three exercise treatment groups: Endurance Group (EG), Circuit-Low Intensity Group (CLG), Circuit-High Intensity Group (CHG). The three groups exercised three times per week, 50 min per session for 12 wk using EG (N.=10), CLG (N.=10) or CHG (N.=10). Pre- and post-training, participants
RESULTS:
Among the three groups, CHG showed the greatest reductions in body weight (BW), percentage of fat mass (FM), waistline, blood lactate (produced at 100 Watt during submaximal test) and greater improvement in 6RM in horizontal leg press and underhand cable pulldowns.
CONCLUSION:
The results obtained favored the conclusion that high-intensity exercise combined with endurance training in the circuit training technique is more effective than endurance training alone or low intensity circuit training in improving body composition, blood lactate, moreover CHG results in significantly greater strength increase compared to traditional circuit trainin
Effects of three distinct protocols of fitness training on body composition, strength and blood lactate.
No full textAIM: Circuit training is a very popular methodology in fitness program because it allows to join together cardiovascular and strength training. The purpose of this study was to determine the physiological effects of circuit training performed at different intensities on body composition, strength and blood lactate in middle-aged subjects who had recently undergone only minimum physical training. METHODS: Forty participants (aged 50-65) were assigned to a control group (CG) or to one of the three exercise treatment groups: Endurance Group (EG), Circuit-Low Intensity Group (CLG), Circuit-High Intensity Group (CHG). The three groups exercised three times per week, 50 min per session for 12 wk using EG (N.=10), CLG (N.=10) or CHG (N.=10). Pre- and post-training, participants RESULTS: Among the three groups, CHG showed the greatest reductions in body weight (BW), percentage of fat mass (FM), waistline, blood lactate (produced at 100 Watt during submaximal test) and greater improvement in 6RM in horizontal leg press and underhand cable pulldowns. CONCLUSION: The results obtained favored the conclusion that high-intensity exercise combined with endurance training in the circuit training technique is more effective than endurance training alone or low intensity circuit training in improving body composition, blood lactate, moreover CHG results in significantly greater strength increase compared to traditional circuit training
The effect of trhe intensity and the quality of physical exercise on xanthines and free radicals production
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