A Häkkinen

Selective muscle hypertrophy, changes in EMG and force, and serum hormones during strength training in older women.

W J Kraemer, K. Häkkinen, W. Kraemer, 2001, Journal of applied physiology.

Changes in muscle morphology, electromyographic activity, and force production characteristics during progressive strength training in young and older men.

W J Kraemer, R U Newton, K. Häkkinen, 1998, The journals of gerontology. Series A, Biological sciences and medical sciences.