Thermodynamics and body weight (Dutch /English)
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presentation on NEAT (non exercise activity thermogenesis) a major factor that determines differences in energy balance and propensity to acquire obesity
![Obesity occurs when energy intake exceeds energy expenditure. Humans
expend energy through purposeful exercise and through changes in posture
and movement that are associated with the routines of daily life [called nonexercise
activity thermogenesis (NEAT)]. To examine NEATs role in obesity,
we recruited 10 lean and 10 mildly obese sedentary volunteers and measured
their body postures and movements every half-second for 10 days.
(abstract)
JA Levine et al. Science 2005; 307:584-586](https://image.slidesharecdn.com/thermodynamica3-180104221931/85/Thermodynamics-and-body-weight-Dutch-English-7-320.jpg)
Thermodynamics and body weight (Dutch /English)
- 1. Thermodynamica en lichaamsgewicht Waarom de 辿辿n als maar aankomt en de ander kan eten wat ie wil zonder aan te komen in gewicht Dr. C.R. Lincke, kinderarts referaat vakgroep kindergeneeskunde 2005 Medisch Centrum Rijnmond Zuid Rotterdam
- 2. Iedereen kent ze: slanke mensen die zich geen enkele beperking op hoeven te leggen en slank blijven niet zo slanke mensen die vroeg of laat toch ongewild jaar naar jaar kilos aankomen
- 3. Zijn de wetten van de thermodynamica buiten werking gesteld? (is er misschien toch een perpetuum mobile?)
- 4. luie dikken versus luie dunnen... verschil in thermodynamica? verschil in metabolisme ? verschil in active lichaamsbeweging? verschil in andere vormen van energieverbruik?
- 6. 1ste wet van de thermodynamica (de wet van behoud van energie) U = q - w
- 7. Obesity occurs when energy intake exceeds energy expenditure. Humans expend energy through purposeful exercise and through changes in posture and movement that are associated with the routines of daily life [called nonexercise activity thermogenesis (NEAT)]. To examine NEATs role in obesity, we recruited 10 lean and 10 mildly obese sedentary volunteers and measured their body postures and movements every half-second for 10 days. (abstract) JA Levine et al. Science 2005; 307:584-586
- 8. ?
- 9. wat is NEAT ? non exercise activity thermogenesis fidgety wiebelfactor
- 10. Role of NonExercise Activity Thermogenesis in Resistance to Fat Gain in Humans J.A. Levine e.a. (Mayo Clinics) Science 1999; 283: 212-214
- 11. waarom wordt de 辿辿n dik van te veel eten en de ander niet?
- 12. 50 kcal/dag 18250 kcal/jaar 1/4 MARS 2kg vet of 60 ml bier of 30 ml wijn
- 13. 1. overvoeding: 85% excess vet 2. snelle vetaccumuleerders 3. langzame vetaccumuleerders 4. de wetten van de thermodynamica zijn absoluut: excess energie wamte activiteit opslag (vet) overvoedingsstudies
- 14. langzame vs snelle vetaccumuleerders: verschil in activiteit / warmteproductie? eerdere overvoedingsstudies: 'wasted calories': 30 % door toegenomen activiteit 70 % ???
- 15. J.A. Levine e.a. Science 1999; 283: 212-214
- 16. resultaten: waar blijven de 1000 kcal/d overfeeding? fat mass gain 398 kcal/d fat-free mass gain 43 kcal/d resting en. exp. 79 kcal/d postpr. en. exp. 137 kcal/d NEAT 328 kcal/d 985kcal/d 98.5% verklaard! fate of 1000 kcal/d overfeeding 39% 4% 8% 14% 33% 2% fat LBW REE TEF NEAT ?
- 17. dik worden van overvoeding hangt af van je NEAT of te wel je wiebelfactor. Zappel-Philipp Fidgety Philip
- 18. luie dunne vs. luie dikke
- 20. subjects and methods: 20 healthy volunteers (coach potatoes) 10 lean (5 m / 5f), BMI 23 賊 2 kg/m2 10 obese (5m/ 5 f), BMI 33 賊 2 kg/m2 10 day study: 25 x 10^6 data points from inclinometers and triaxial accelerometers steady state
- 26. If you are fat you need more NEAT... Obese individuals were seated, on average, 2 hours longer per day than lean individuals. Posture allocation did not change when the obese individuals lost weight or when lean individuals gained weight, suggesting that it is biologically determined. If obese individuals adopted the NEAT-enhanced behaviors of their lean counterparts, they might expend an additional 350 calories (kcal) per day.