Reduced volume but increased training intensity elevates muscle Na+, K+ pump Alpha 1 subunit and NHE1 expression as well as short-term work capacity in humans - Iaia, F. M.; Thomassen, M.; Kolding, H.; Gunnarsson, T.; Wendell, J.; Rostgaard, T.; Nordsborg, N.; Krustrup, P.; Nybo, L.; Hellsten, Y.; Bangsbo, J. (American Journal of Physiology - Regulatory, Integrative and Comparative Physiology, 2007)