Endurance running performance after 48 h of restricted fluid and/or energy intake

Article Abstract:

The effect of a 48-h period of either fluid restriction (FR), energy restriction (ER), or fluid and energy restriction (F+ER) or 30-min treadmill time trial (TT) performance in temperate conditions, is observed. The findings show detrimental effect of a 48-h period of ER but no significant effect of ER on 30-min treadmill TT performance in temperate conditions, thus not supporting popular contention that modest hypohydration significantly impairs endurance performance in temperate conditions.

United Kingdom, Ingestion

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Increased inflammatory response of blood cells to repeated bout of endurance exercise

Article Abstract:

A study was conducted to find out whether two sequential hard physical exercise bouts at 80% [VO.sub.2max] provokes blood cell stimulus responsiveness differing from that of a single exercise bout. The results have proved that two physical exercise bouts broken up by a 4-hour rest are associated with an enhanced propensity of the blood cells to generate tissue factor activity and some proinflammatory products compared with one exercise bout.

Blood cells, Clinical report

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Role of AMP-activated protein kinase in the molecular adaptation to endurance exercise

Article Abstract:

AMP-activated protein kinase (AMPK) is activated in response to muscle concentration where both muscle contraction and chemical activation of AMPK result in increases in PGC-1[alpha], a transcriptional coactivator involved in simulation of mitochondrial biogenesis. These observations lend credence to the hypothesis that AMPK activation induced by muscle contraction is responsible in part for adaptations to endurance exercise training.

Muscle contraction, Protein kinases

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