Dempsey-Liberty Mutual Push and Pull Energy Expenditure Calculator

Population
Body weight kg
Frequency /min
Distance m
Measured sustained force kg

Push:
VO2 (ml/min)

Kcal/min

Kcal/day

Push acceptable?


Pull:
VO2 (ml/min)

Kcal/min

Kcal/day

Pull acceptable?

Metabolic equations were developed by Liberty Mutual to predict oxygen consumption for individual and combination materials handling tasks. The calculated expenditure limit is expressed as the rate of oxygen consumption per minute (VO2).

The calculator on this website converts the VO2 value to kcal per minute. According to Mital et al. (1993), the threshold limit for a male population is 4 kcal per minute and for a female population 3 kcal per minute.

Source:
Oxygen Consumption Prediction Models for Individual and Combination Materials Handling Tasks, published by Dempsey, et al., 2008.

A Guide to Manual Materials Handling, published by Mital, et al., 1993.