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Human work effort levels vs. energy expenditure and associated heart rates.
Human work effort levels and the associated heart rates and energy expenditures:
Human Effort Levels - Energy and Heart Rates
Effort Level Typical Tasks Heart Rate Elevation (beats per minute) Body Energy Expenditure (watts) Work Duration Restriction (hours)
riding bicycle at 10 km/h, canning paint, raking leaves, making drawings, machining light objects, sewing by hand
0 - 35
70 - 175
building brick wall, cleaning boiler, planing softwood, sheet-metal working, soldering, using screwdrivers, walking on level
35 - 55
175 - 260
digging trenches, using sledge-hammer, stoking furnace, metal grinding, walking up 5% gradient
55 - 75
260 - 420
< 1 to 2
shoveling sand, using jackhammer, stacking concrete blocks, stone masonry, climbing normal stairs
75 - 90
420 - 700
< 1 to 2
sawing wood, climbing vertical ladder
< 0.25 to 0.3
1 W (watts) = 3.412 Btu/h
Human physiology, air quality and comfort temperatures, activity and metabolic rates, health effects of carbon monoxide and more.
Age and typical physical growth of boys and girls - age 2 to 18 years.
Typical ideal body weight versus height.
Comfort vs. dry bulb, wet bulb and dew point temperature.
Gaseous polutants emissions from human bodies.
Maximum work load vs. temperature and relative humidity.
Specific heat of the human body - compared to substances like protein and wood.
Relaxation rest time vs. working time and activity.
pH in human materials like blood, salvia and more.
Calculate steps, unit rise and run in a staircase.
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