Low energy expenditures in free-living populations.

摘要: Low energy intakes are reported fairly frequently in populations where the implication is that these free-living and represent norm. Intakes of energy, if they really reflect those pertaining to average life-style, must also be reasonably indicative expenditure. It possible define 'low' expenditure on basis obligatory metabolism (BMR + dietary induced thermogenesis) plus needed for minimal physical activity--eg 2 h standing activities 1 walking daily. On basis, realistic level about 1.5 x BMR, tables given showing typical values men women over a range body weights. If accepted, considerable doubt placed interpretation many reports literature people apparently existing intakes.