Foreign language references

1. Wirths W (1979): [Differences in energy expenditure for selected activities under controlled and uncontrolled conditions]. Z.Ernahrungswiss. 18, 250-257.

Notes: Experiments with the Max-Planck respirometer were made to determine the energy expenditure. Four kinds of comparable tests were made under standard conditions and ad libitum individual: walking on solid, level ground with light clothing, in high lace boots (walking-speed 5 km/h), walking with 10 kg resp. 20 kg load on level, solid ground (running-speed 10 km). The energy expenditure under standard conditions is much higher than in the working-elements ad libitum speed and distance. Many persons overestimate their personal energy expenditure which is a reason for a positive energy balance succeeded by overweight.