“…Furthermore, in many studies, data concerning stress testing using these two ergometers are different depending on the type of protocol used (Kofsky et al, 1983;Gass and Camp 1984;Dotan and Bar-Or 1983;William et al, 1983), the disability of subjects (Horvat et al, 1986;Kavanagh and Shephard 1973;Wahren andBygdeman 1971, Wilde et al, 1981), and the characteristics of ergometers (Bergh et al, 1976;Nagle et al, 1984;Lundberg, 1980).…”