Does local immersion in thermo-neutral bath influence surface EMG measurements? Results of an experimental trial.

This study investigated the effect of water immersion on surface electromyography (EMG) signals recorded from the brachioradial muscle of 11 healthy subjects, both in a dry environment and a thermo-neutral forearm bath (36 degrees C). EMG measurements were registered in a sitting position, using waterproof electrodes under 3 conditions: relaxed muscle, maximum voluntary isometric contraction (MVC, 1s, grip test) and 70% of the MVC (5 s). In relaxed muscle, mean EMG values were significantly higher under immersion compared to the dry conditions (dry: 5.

Magnesium absorption from mineral waters of different magnesium content in healthy subjects.

Objective: To assess the absorption of magnesium (Mg) from mineral waters of different Mg content in comparison to low mineralized water and a Mg capsule.

Design: Randomized, controlled, double- blind trial in a crossover design with an additional control with a Mg capsule.

Setting: Institute of Balneology and Medical Climatology, Medical School of Hanover, Germany.