Measuring Physical Activity. Physical activity is difficult to measure as it involves complex motions and provides different physiological stresses. Physical activity ranges from maximal exercise to fidgeting when at rest.
Quantification of Training
Physiological adaptation to training may be quantified through a number of diagnostic tests.
The Epidemiology of Health & Exercise Behaviours
Good descriptive epidemiology data can provide valuable insight:
Total Daily Energy Expenditure (kcal/kg) (Several Countries)
Physical Activity Participation by Youth