Table 3. Overwork index and heart rates of study population divided by overwork with assessment using last measurements of heart rate.

Variables		Non-overwork (n = 32)	Overworka (n = 28)	p-valueb
Overwork Index				< 0.001
	Mean ± SD	1.1 ± 0.3	2.3 ± 0.9
	Median [Min, Max]	1.1 [0.6, 1.6]	2.0 [1.3, 4.8]
Maximal heart rate				< 0.001
	Mean ± SD	128 ± 11.1	142 ± 9.9
	Median [Min, Max]	132 [100, 150]	141 [126, 166]
Minimal heart rate				0.261
	Mean ± SD	60.2 ± 12.0	63.5 ± 11.1
	Median [Min, Max]	60.5 [36.0, 81.0]	66.5 [35.0, 81.0]

^aOverwork is defined as the average of Relative heart rate during the workday exceeds 30%.

^bp-values from t-tests.