Classification of Severity of Workload as per Heart Rate & Energy Expenditure

X1 (1st Working Heart Rate)   (*)
X2 (2nd Working Heart Rate)   (*)
X3 (3rd Working Heart Rate)   (*)
X4 (4th Working Heart Rate)   (*)
X5 (5th Working Heart Rate)   (*)
 
Average Working Heart Rate
       (beats/minute)
Energy Expenditure (kJ/min.)

S. No. Workload Varghese et al. (1994)
Energy Expenditure (kJ/min.)		 Varghese et al. (1994)
Heart Rate (beats/minute)		 NIOSH (USA) ISO-28996 (2006)
Energy Expenditure (kJ/min.)
1. Very Light             Up to 5.0             Upto 90             2.0-4.9
2. Light             5.1-7.5             91-105             5.0-7.4
3. Moderately Heavy             7.6-10.0             106-120             7.5-9.9
4. Heavy             10.1-12.5             121-135             10.0-12.4
5. Very Heavy             12.6-15.0             136-150             >12.5
6. Extremely Heavy             >15.0              >150             

Result: Varghese et al. (1994):

Varghese et al. (1994):

NIOSH (USA) ISO-28996 (2006):


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