Does non-exercise activity thermogenesis contribute to non-shivering thermogenesis?

✍ Scribed by Ann M. Harris; Leslie R. MacBride; Randal C. Foster; Shelly K. McCrady; James A. Levine

• Book ID: 104035001
• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 233 KB
• Volume: 31
• Category: Article
• ISSN: 0306-4565
• DOI: 10.1016/j.jtherbio.2006.08.007

✦ Synopsis

We wanted to examine if spontaneous physical activity contributes to non-shivering thermogenesis. Ten lean, healthy male subjects wore a physical activity, micro-measurement system whilst the room temperature was randomly altered at two hourly intervals between thermoneutral (72°F), cool (62°F) and warm (82°F) temperatures. Physical activity measured during the thermoneutral, cooling and warming periods was not significantly different. Cooling, increased EE above basal and thermoneutral values 2061 ± 344 kcal/day (p <0.01). Thus, the increase in energy expenditure associated with short-term environmental cooling in lean, healthy males does not appear to be due to increased spontaneous physical activity or fidgeting.