Effect of the Healthy Schools Program on prevalence of overweight and obesity in California schools, 2006-2012.

Introduction: The Alliance for a Healthier Generation's Healthy Schools Program (HSP) is a national evidence-based obesity-prevention initiative aimed at providing the schools in greatest need with onsite training and technical assistance (TTA) and consultation with national experts (HSP national advisors) to create sustainable healthy change in schools' nutrition and physical activity environments. The objective of this study was to evaluate the impact of HSP on the prevalence of overweight and obesity in California schools, from HSP's inception in 2006 through 2012.

Methods: We used statewide body mass index (BMI) data collected annually from 5th-, 7th-, and 9th-grade students to determine whether enrolling in the HSP's onsite intervention reduced the prevalence of overweight and obesity in intervention schools (n = 281) versus propensity-score matched control schools (n = 709) and whether increasing exposure to the program (TTA and contact with HSP national advisors) was associated with reductions in the prevalence of overweight and obesity.

Using learner-centered education to improve fruit and vegetable intake in California WIC participants.

Objective: To examine the effectiveness of learner-centered education in conveying the message to change participants' fruit and vegetable consumption.

Design: Focus groups were conducted with sites participating in the Finding the Teacher Within (FTW) program and comparison sites 4-6 months after participants attended the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) fruit and vegetable class.

Setting: Six California WIC agencies.

Interaction of blood flow and oxygen delivery affects peak VO2 and fatigue in canine muscle in situ.

This investigation was designed to examine the interactive effects of blood flow (Q) and oxygen delivery (QO2) on peak oxygen consumption (VO2peak) and fatigue in the gastrocnemius-plantaris dog muscle in situ. Arterial oxygen content (CaO2) was manipulated by varying the fraction of inspired O2 to create a high- and a low-QO2 treatment at each of three levels of Q (approximately/=800, 1100 and 1500 ml x kg(-1) x min(-1)). Isometric contraction was achieved by stimulation with one tetanic contraction per second (200 ms at 70 Hz) at supramaximal voltage for 10 min to achieve VO2peak under each condition.