Farr, J., Going, S. B., & Laddu, D. (2014). Exercise, Hormones and Skeletal Adaptations during childhood and adolescence. Pediatric Exercise Science, 26, 384-391.
Bea, J. W., Woo, J., Hsu, C. C., Going, S. B., Horn, P., & Morrison, J. (2017). Adolescent Obesity and the Development of Cardiometabolic Disease in Black and White Girls at Age 19: The National Heart Lung and Blood Institute Growth and Health Study. Pediatrics.
Laddu, D. R., Farr, J. N., Lee, V. R., Blew, R. M., Lohman, T. G., & Going, S. B. (2014). Muscle density predicts changes in bone density and strength: a prospective pQCT study in girls.. Journal of Musculoskeletal and Neuronal Interactions, 14(2), 195-204.
Sardinha, L. B., Lohman, T. G., Teixeira, P. J., Guedes, D. P., & Going, S. B. (1998). Comparison of air displacement plethysmography with dual-energy X-ray absorptiometry and 3 field methods for estimating body composition in middle-aged men. The American journal of clinical nutrition, 68(4).
This study was designed to compare air displacement plethysmography with dual-energy X-ray absorptiometry (DXA) and 3 other field methods for estimation of body composition. Subjects were 62 healthy, white men aged 37.6+/-2.9 y (weight: 81.8+/-11.3 kg; height: 171.5+/-4.9 cm). Body composition was also assessed by using body mass index, single-frequency bioelectrical impedance analysis, multi-frequency bioelectrical impedance spectroscopy, and the skinfold-thickness equations of Jackson and Pollock and Durnin and Womersley. Percentage body fat (%BF) with the plethysmograph was 23.4+/-7.0 and with DXA was 26.0+/-7.4. The 2.6% mean difference was significant (P 0.05). Total error was 3.7%BF. As assessed by multiple regression analysis, %BF with the plethysmograph, age, weight, and height yielded a DXA-adjusted R2 value of 89.5% fat and an SEE of 2.4% fat. All other models had higher SEEs and lower adjusted R2 values: 4.3% and 66.5% for body mass index, 3.3% and 79.8% for bioelectrical impedance analysis, 3.6% and 76.2% for bioelectrical impedance spectroscopy, 3.7% and 74.55% for the equations of Jackson and Pollock, and 3.9% and 71.6% for the equations of Durnin and Womersley, respectively. The plethysmograph also predicted fat mass and fat-free mass more accurately than all other models, with a lower SEE and higher adjusted R2 value. In conclusion, although %BF was systematically underestimated, body composition was closely estimated with air displacement plethysmography in middle-aged men.
McKnight, P. E., Kasle, S., Going, S., Villanueva, I., Cornett, M., Farr, J., Wright, J., Streeter, C., & Zautra, A. (2010). A comparison of strength training, self-management, and the combination for early osteoarthritis of the knee. Arthritis Care and Research, 62(1), 45-53.
PMID: 20191490;PMCID: PMC2831227;Abstract:
Objective. To assess the relative effectiveness of combining self-management and strength training for improving functional outcomes in patients with early knee osteoarthritis. Methods. We conducted a randomized intervention trial lasting 24 months at an academic medical center. Community-dwelling middle-aged adults (n = 273) ages 35-64 years with knee osteoarthritis, pain, and self-reported physical disability completed a strength training program, a self-management program, or a combined program. Outcomes included 5 physical function tests (leg press, range of motion, work capacity, balance, and stair climbing) and 2 self-reported measures of pain and disability. Results. A total of 201 participants (73.6%) completed the 2-year trial. Overall, compliance was modest for the strength training (55.8%), self-management (69.1%), and combined (59.6%) programs. The 3 groups showed a significant and large increase from pre- to posttreatment in all of the physical functioning measures, including leg press (d = 0.85), range of motion (d = 1.00), work capacity (d = 0.60), balance (d = 0.59), and stair climbing (d = 0.59). Additionally, all 3 groups showed decreased self-reported pain (d= -0.51) and disability (d= -0.55). There were no significant differences among the groups. Conclusion. Middle-aged, sedentary persons with mild early knee osteoarthritis benefited from strength training, self-management, and the combination program. These results suggest that both strength training and self-management are suitable treatments for the early onset of knee osteoarthritis in middle-aged adults. Self-management alone may offer the least burdensome treatment for early osteoarthritis. © 2010, American College of Rheumatology.