834 reported on sport-based intervention, 2) included children aged 6-12 years and/or adolescents aged 13-18years, 3) reported a quantitative measure of body weight, and 4) published in peer reviewed journals and/or forms of thesis and dissertation (from January 2000 to October 2014). Two groups of investigators independently abstracted and coded data for verification. The Comprehensive Meta-Analysis software was used to examine a random effects model and subgroup analyses were conducted to identify moderator effects (age, gender, intervention length, and sport types). RESULTS: Our searches identified 1,371 citations. Eighteen studies with a total of 2,267 participants met inclusion criteria. The mean intervention length was 26 weeks. The overall treatment effect was statistically significant (Cohen’s d (ES) = .50, 95% CI = .14, .86, p = 0.007). Subgroup analyses showed that intervention length (< 3, 3 - 6, and > 6 months), Qbetween (Qb) = 6.39, df = 2, p = .04, and sport types (individual, team, and combination), Qbetween (Qb) = 6.06, df = 2, p = .04, partly explained the heterogeneity. The subgroups with intervention length (> 6 months; ES = 1.32, 95% CI = .58, 2.07) and sport type (combination; ES = 1.26, 95% CI = .46, 2.06) appeared to be the most effective in body weight reduction. CONCLUSION: There was a moderate overall effect for sport-based physical activity intervention on body weight reduction. More randomized control based high quality trials are required to effectively inform the implementation of sport-based physical activity intervention to reduce body weight in children and adolescents. 3074 Board #6 May 29, 3:15 PM - 5:15 PM Associations between Physical Activity Levels and Sleep in African American Girls Cory Greever, Ogechi Nwaokelemeh, Sarah Burkart, Matthew Ahmadi, Christine St. Laurent. University of Massachusetts, Amherst, Amherst, MA. (Sponsor: Sofiya Alhassan, FACSM) Email: greev2cj@gmail.com (No relationships reported) Insufficient physical activity (PA), increased sedentary time (SED) and poor sleep have been associated with higher cardiovascular disease risk in children. Research suggests that African- American girls are more likely to be physically inactive and experience poor sleep than their Caucasian counterparts. While many speculate that increased PA and decreased SED improves sleep, few studies have examined the relationship between PA/SED and sleep in this at-risk population. PURPOSE: To examine the associations between time spent in different PA intensities and SED with sleep duration and quality in pre-adolescent African-American girls. METHODS: Baseline data of girls (n=36; age, 8.4±1.2yrs; BMI percentile, 64.8±32.7) who participated in the Mothers and Girls Dancing Together study were used in this analysis. Moderate- to-vigorous PA (MVPA), light PA (LPA) and SED were assessed with accelerometers during waking hours for seven consecutive days. Sleep duration, overall sleep quality and sleep subscale scores were evaluated via parental report on the Children’s Sleep Habits Questionnaire. Associations between PA/SED and sleep variables were examined with Spearman correlations. Participants were divided into tertiles of MVPA, LPA and SED. Differences in sleep variables between the most and least active/SED groups were compared using Mann Whitney U tests. RESULTS: There were no significant associations between times spent in PA or SED with any sleep variables. However, there were trends suggesting an inverse relationship between LPA and sleep disordered breathing (SDB) subscale scores (r=-0.29, p=0.08) and a positive relationship between SED and SDB subscale scores (r=0.32, p=0.06). The highest LPA and lowest SED tertiles exhibited lower SDB subscale scores compared with the lowest LPA and highest SED tertiles, respectively (p=0.03). CONCLUSIONS: African-American children are more likely to develop SDB compared to other ethnic groups. In this small sample of African-American girls, those who got the most LPA and least SED reported fewer SDB related sleep problems than those who got the least LPA and most SED. Future work using longitudinal designs, objective sleep measurements and larger samples is needed to fully examine the nature and direction of these potential associations in this population. 3075 Board #7 May 29, 3:15 PM - 5:15 PM Preschool Pilot (PSP) Study: Targeting Teachers And Engaging Parents To Improve Weight-related Outcomes For African-American Preschoolers Daheia J. Barr-Anderson, FACSM. University of Minnesota, Minneapolis, MN. Email: barra027@umn.edu (No relationships reported) For very young children who are provided child care outside of the home, physical activity (PA) and diet behaviors are heavily influenced by both teachers and parents. PURPOSE: To test the feasibility of a multi-component PA and healthy eating intervention that targeted preschool teachers but engaged parents and students to improve these behaviors in a predominantly African-American sample of 3-5 year old children. METHODS: An eight-week intervention that targeted teachers, and engaged students and parents, was implemented. Preschool teachers met once a week to participate in interactive PA and nutrition sessions. Twice a week, children were led by teachers in 10-minute PA breaks that included an academic focus, and over a four-week period, they completed a 10km Walkathon. Parents and teachers participated in a Pedometer Challenge over four weeks and tracked their daily steps. Process evaluation and outcome data, including classroom PA logs, anthropometric measures of teachers, and surveys about the health behaviors of teachers, parents, and children, were collected. RESULTS: Eighteen teachers and 54 parents completed surveys at baseline; 13 teachers and 37 parents completed surveys at the end of the program. Teachers reported a non-significant decrease in PA, however, parents reported an increase in their child’s moderate-to-vigorous PA that was approaching significance (22.8 mins/day at baseline vs. 28.0 mins/day at follow-up, p=0.06). Approximately 30% more teachers reported an increased consumption of fruits and vegetables, which paralleled parents’ non-significant increase of their child’s fruit and vegetable consumption (3.8 at baseline vs. 3.9 at follow-up). Parents were not targeted for behavioral changes, but they reported that the take-home information about PA and healthy eating prompted them to make changes with their children. CONCLUSIONS: A multi-component intervention that targets teachers and engages students and parents has the potential to positively impact weight-related behaviors of African-American preschoolers. F-68 Free Communication/Slide - Fatigue Friday, May 29, 2015, 3:15 PM - 5:15 PM Room: 30B 3076 Chair: Janet Taylor. Prince of Wales Medical Research Institute, Randwick, Australia. (No relationships reported) 3077 May 29, 3:15 PM - 3:30 PM The Effect Of Fatigue On Pedaling Movement And Emg During Cycling Yin-Shin LEE, Chia-Hsiang CHEN, Tzyy-Yuang SHIANG. National Taiwan Normal University, taipei, Taiwan. Email: sweeetlee07@gmail.com (No relationships reported)