TY - BOOK AU - Rejeski,Walter J. AU - Kenney,Elizabeth A. TI - Fitness motivation: preventing participant dropout PY - 1988/// CY - Champaign, IL PB - Life Enhancement Publications KW - Physical fitness KW - Psychological aspects KW - Local KW - Aerobic exercises KW - Motivation (Psychology) N1 - Includes indexes; Bibliography: p. 145-147 ER -