TABLE 1.

The thresholds of the three fitness categories in men and women.

	Age Groups
	20–30 year	40–49 year	50–59 year	≥60 year
Non-exercise estimated cardiorespiratory fitness in METs in men
T1 (Lower third)	≤ 13.38	≤13.10	≤12.47	≤11.38
T2 (Middle third)	13.38–14.31	13.10–14.01	12.47–13.36	11.38–12.46
T3 (Upper third)	>14.31	>14.01	>13.36	>12.46
Non-exercise estimated cardiorespiratory fitness in METs in women
T1 (Lower third)	≤ 10.84	≤10.59	≤9.90	≤9.23
T2 (Middle third)	10.84–11.44	10.59–11.13	9.90–10.62	9.23–9.91
T3 (Upper third)	>11.44	>11.13	>10.62	>9.91