Angelo Tremblay

1. How do wepreventobesityin 2011? Angelo Tremblay Division of Kinesiology

3. By promotingadequatesleep

4. By increasing the physicalwork/cognitive effort ratio

5. By investing in nutrition competence and healthyfoodavailability

6. By promotinghealthyfood-relatedbehaviours

8. Wholebrainmetabolismwhen the cognitive taskwasgivenwith: Placebo increased 21% Methylphenidateincreased 11% (50% less) FromVolkow N.D. et al, PLoS ONE 2008

9. Methylphenidatereducesenergyintake and dietary fat intakeduring a buffet-style meal in adults Variable Mean change (%) Energyintake -11* Fat intake -17* Values are means * Significantdifference versus a placebo condition: p < 0.05 Adaptedfrom Goldfield GS. AJCN 86: 308-315, 2007

10. Treatment: Medications used include mixed salts amphetamine (Adderall XR), mythylphenidate sustained-release capsule (Concerta), and sustained release destroamphetamine sulfate (Dexedrine Spansules). All participants, including control subjects, were offered individual assessment and diet instruction by the clinic’s registered dietitian. All participants were counselled regarding the need to be physically more activie. Duration of ADHD management: 466 days

11. Body weight changes with ADHD management ADHD-treated subjects Untreated controls (n = 65) (n = 13) body weight (kg) -15.05 +3.26* (%) -12.36 +2.78* *Significant difference between groups, p < 0.001 Adapted from Levy LD et al, Int J Obes 33: 326-334, 2009

13. By promotingadequatesleep

14. By increasing the physicalwork/cognitive effort ratio

15. By investing in nutrition competence and healthyfoodavailability

16. By promotinghealthyfood-relatedbehaviours

17. By investing in preventivepharmacology !!!