Suchergebnisse

Objective: To develop work guidelines for wrist posture based on carpal tunnel pressure. Background: Wrist posture is considered a risk factor for distal upper extremity musculoskeletal disorders, and sustained wrist deviation from neutral at work may be associated with carpal tunnel syndrome. However, the physiologic basis for wrist posture guidelines at work is limited. Methods: The relationship of wrist posture to carpal tunnel pressure was examined in 37 healthy participants. The participants slowly moved their wrists in extension-flexion and radioulnar deviation while wrist posture and carpal tunnel pressure were recorded. The wrist postures associated with pressures of 25 and 30 mmHg were identified for each motion and used to determine the 25th percentile wrist angles (the angles that protect 75% of the study population from reaching a pressure of 25 or 30 mmHg). Results: Using 30 mmHg, the 25th percentile angles were 32.7° (95% confidence interval [CI] = 27.2°—38.1°) for wrist extension, 48.6° (37.7°—59.4°) for flexion, 21.8° (14.7°—29.0°) for radial deviation, and 14.5° (9.6°—19.4°) for ulnar deviation. For 25 mmHg, the 25th percentile angles were 26.6° and 37.7° for extension and flexion, with radial and ulnar deviation being 17.8° and 12.1°, respectively. Conclusion: Further research can incorporate the independent contributions of pinch force and finger posture into this model. Application: The method presented can provide wrist posture guidelines for the design of tools and hand-intensive tasks.

Purpose. Examine the impact of the Children's Power Play! Campaign on fruit and vegetable (FV) intake and physical activity (PA). Design. Study design was a cluster randomized, controlled trial. Setting. Forty-four low-resource public schools in San Diego County, California, were included in the study. Subjects. Study subjects comprised a total of 3463 fourth/fifth-graders (1571 intervention, 1892 control), with an 86.9% completion rate. Intervention. Throughout 10 weeks, activities were conducted during/after school, including weekly FV/PA lessons and PA breaks; biweekly classroom promotions/taste tests; posters displayed in/around schools; and weekly nutrition materials for parents. Measures. Self-reported FV intake (cups/d) and PA (min/d) were collected at baseline and follow-up using a diary-assisted, 24-hour dietary recall and Self-Administered Physical Activity Checklist. Analysis. Multivariate regression models adjusted for demographics and cluster design effects were used, with change as the dependent variable. Results. Intervention children, compared with controls, showed gains in daily FV intake (.26 cups, p < .001) and PA time at recess/lunch (5.1 minutes, p = .003), but not total daily PA minutes. Conclusion. Power Play! can help schools and community organizations improve low-income children's FV intake and PA during recess/lunch.