Effects of Acute Caffeine Consumption on Sodium-Aided Hyperhydration

When utilized separately, pre-exercise hyperhydration or consumption of caffeine have both been shown to be ergogenic. Acute caffeine consumption has also been shown to promote diuresis in some situations, but this effect has not been studied when caffeine is used in conjunction with sodium-aided hyperhydration. 

We measured urine production during hyperhydration strategies performed with and without caffeine. Fifteen euhydrated subjects performed five strategies by consuming 20 mL water/kg bm alone (NT), or with a placebo (PL), 5 mg/kg bm caffeine (Caf), 110 mg/kg bm NaCl (Na), or 5 mg caffeine +110 mg NaCl/kg bm (CafNa). Total urine excretion was measured for 2 h following treatment consumption and expressed as a percentage of the total water consumed. Total twohour urine excretion values were 103 16% (NT), 102 15% (PL), 116 18% (Caf), 68 14% (Na) and 85 14% (CafNa) of water consumed.

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Eccentric Overload Training and Injury Prevention during Running

Running is, maybe, the most ancient physical activity. Nevertheless, it has been on the spot in the last years, and actually is a trending exercise around the world. Running is a whole body activity that stresses our systems both in metabolic and mechanistic way. This stress, repeated continuously, could lead into an overuse injury in muscle, tendon or even bone, being running one of the sports in which overuse injuries develop more frequently, in around 59.4% of the cases. As Videbæk found in their study, the incidence of injury is higher in beginners than in recreational runners, which could be explain, at least partially, in the adaptations reached along their physical training period.

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