Table 1: The effects of CIH on cardiac I/R-induced injuries.

Authors Strains Exposure time Effects Reference Wang et al. Male SD rats 4 wks Protective effects [1] Ding et al Male SD rats 42 days Protective effects [2–4] Neckar et al. Male Wistar rats 8 h/day, 5 days/wks; Protective effects [5] Asemu et al. Male Wistar rats 2 wks and 5 wks Protective effects [6] Park and Suzuki C57BL/6 mice 1, 2 wks and 4 wks Protective effects (4 wks) Deleterious effects (1, 2 wks) [7] Guo et al. male guinea pigs 28 days Protective effects [8] Guo et al. Male guinea pigs 28 days Protective effects [9] Zong et al. Dogs 20 days Protective effects [10] Wang et al. Male SD rats 14, 28 and 42 days Protective effects [11–13] Joyeux-Faure et al. Male Wistar rats 7 wks Deleterious effects [14]

*wks: weeks.