CHANGES IN STRENGTH, POWER, AND STEROID HORMONES DURING A PROFESSIONAL RUGBY UNION COMPETITION.

The article reports on research conducted to investigate changes in strength, power and levels of testosterone and cortisol in rugby players over a 13 week elite competitive rugby union season. Researchers evaluated 32 professional rugby players. They found that individual differences over the competitive season for all measures were mostly trivial or inestimable and that more than two resistance sessions per week may be needed to improve strength and power in a competitive season.