Determination of Allowance Time by Work Sampling and Heart Rate in Manufacturing Plant in Juárez México

Table 1

Job severity classification according to Astrand and Rhodahl [20].

Job Severity	Vo2 (l/min)	Heart Rate(beats/min)	Energy Consumption (Kcal/min)
Light	<0.05	<90	<2.5
Moderate	0.5-1.0	90-110	2.5-5
Heavy	1.0-1.5	110-130	5-7.5
Very Heavy	1.5-2.0	130-150	7.5-10
Extremely Heavy	>2.0	150-170	>10