WARD, S. Exercise prescription guideline for normal and cardiac populations. Cardiology Clinics. 1987, 5, 197-210
BUTTS, N. Energy cost of walking on a dual-action treadmill in men and women. Med. Sci. Sports Exer. 1995, 27, 121-125
AUBLE, T. Physiological effects of exercising with hand weights. Sports Med. 1991, 11, 244-256
GRAVES, J. The effects of hand-held weights on the physiological responses to walking exercise. Med. Sci. Sports Exer. 1987, 19, 260-265
AMOS, K. The safety and effectiveness of walking with ankle weights and wrist weights for patients with cardiac disease. J. Cardiopulmonary Rehab. 1992, 12, 254-260