Differences in blood urea and creatinine concentrations in earthed and unearthed subjects during cycling exercise and recovery.

Sokal et al, 2013 [double-blind, crossover study, n=42, male, mean age of 21], to evaluate biochemical parameters in subjects who were earthed during cycling. Earthing was performed through a system consisting of four metal-plastic hypoallergenic bands wrapped around the ankles. Bands were connected to conductors with a terminator clamp placed on plumbing pipe. One group was earthed in the first week during 30 minutes of cycling exercise and during recovery, and a second group was earthed in the second week. Blood samples were obtained before each training session, after 15 and 30 minutes of exercise, and after 40 minutes of recovery. Results showed that blood urea concentrations are lower in subjects who are earthed during physical exercise and recovery compared with the same subjects who are not earthed during the same period of exercise and recovery. Creatinine concentrations in earthed subjects during exercise were unchanged. According to the authors, these results suggest that earthing during exercise inhibits hepatic protein catabolism or increases renal urea excretion. Affects protein metabolism, resulting in a positive nitrogen balance. This phenomenon has fundamental importance in understanding human metabolic processes and may have implications in training programs for athletes.