Rehydration in long distance athletes. A randomized controlled cross-over NMR study”:
Short term ionic intake as a nutritional therapy. Immediate effect recovering hydration and muscular energetic elements in sportsmen.
Rehydration following exercise: effects of administration of two beverages, one with relatively low sodium content versus one with moderately high sodium content (Recuperat-ion).
Study of plasma osmolality and the effect of energetic substrates by mean of Phosphorus-31 Nuclear Magnetic Resonance Spectroscopy (31P-NMR).
Pujol P, Rosés JM, Drobnic F, Aliste L, González C y Moreno A. Centre d’ Alt Rendiment. Sant Cugat del Vallès (Barcelona). España.
Brief abstract:
This is an open randomized controlled cross-over study (AB/BA) with twelve male trained athletes. The subjects were assigned at random to one of the groups with sequence AB (K1) or BA (K2). All the subjects intake 150 % of the weight-loss post exercise.
Recuperat-ion re-establishes the normality of muscle energetic substrates (Pi/Total, Pi/beta-ATP and Pi/PCr) as soon as in the first 2 hours of the port-exercise rehydrating period, and shows a greater and faster normalization of muscular rehydration with respect to the control drink.
Therefore, the administration of a solution with a moderately high content of sodium seems to re-establish with greater speed not only muscular rehydration but also the energetic substrates needed for muscular performance. This speedy re-establishment of both rehydration and the energetic substrates which intervene in the energetic metabolism of muscles is particularly useful in those sports which involve fast and intense and/or prolonged and repetitive exercises.
