Se xual function in men older than 50 years of age: Results from the health professionals follow-up study http://www.ncbi.nlm.nih.gov/pubmed/12899583
Se xual Desirability and Se xual Performance: Does Exercise and Fitness Really Matter?http://www.ejhs.org/volume7/fitness.html
Physical fitness, aging, and se xuality http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1305535/
Effects of se.ual intercourse on maximal aerobic power, oxygen pulse, and double product in male sedentary subjects (Boone) http://europepmc.org/abstract/MED/8775649
Effect of se.ual activity on cycle ergometer stress test parameters, on plasmatic testosterone levels and on concentration capacity. A study in high-level male athletes performed in the laboratory. (Sztajzel et al) http://www.ncbi.nlm.nih.gov/pubmed/11125766