We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitlePhysical activity energy expenditure has not declined since the 1980s and matches energy expenditures of wild mammals.AuthorsWesterterp, K R; Speakman, J RAbstractObesity results from protracted energy imbalance. Whether this comprises excessive energy intake, lowered physical activity or both, remains disputed.PublicationInternational journal of obesity (2005), 2008, Vol 32, Issue 8, p1256ISSN1476-5497Publication typeJournal ArticleDOI10.1038/ijo.2008.74