Benefits of short-term modified stepping exercise on blood pressure and physical performance in female elderly with hypertension: a pilot study Tekijä Sarinukul, Chawin, Donpunha, Wanida, Nakmareong, Saowanee, Sawanyawisuth, Kittisak, Ruksapukdee, Wanida, Janyacharoen, Taweesak