Prediction of segmental lean mass using anthropometric variables in young adults     

Aldo Scafoglieri  Jonathan Tresignie  Steven Provyn  Mike Marfell-Jones  Thomas Reilly  Ivan Bautmans 《Journal of sports sciences》2013,31(8):777-785

Abstract

The aim of the present study was to develop and cross-validate anthropometrical prediction equations for segmental lean tissue mass (SLM). One hundred and seventeen young healthy Caucasians (67 men and 50 women; mean age: 31.9 ± 10.0 years; Body Mass Index: 24.3 ± 3.2 kg · m^?2) were included. Body mass (BM), stretch stature (SS), 14 circumferences (CC), 13 skinfolds (SF) and 4 bone breadths (BB) were used as anthropometric measurements. Segmental lean mass of both arms, trunk and both legs were measured by dual energy X-ray absorptiometry as the criterion method. Three prediction equations for SLM were developed as follows: arms = 40.394(BM) + 169.836(CCarm-tensed) + 399.162(CCwrist) – 85.414(SFtriceps) – 39.790(SFbiceps) – 7289.190, where Adj.R ² = 0.97, P < 0.001, and standard error of estimate (SEE) = 355 g;trunk = 181.530(BM) + 155.037(SS) + 534.818(CCneck) + 175.638(CCchest) ? 88.359(SFchest) ? 147.232(SFsupraspinale) ? 46522.165, where Adj.R ² = 0.97, P < 0.001, and SEE = 1077g; and legs = 55.838(BM) + 88.356(SS) + 235.579(CCmid-thigh) + 278.595(CCcalf) + 288.984(CCankle) ? 84.954(SFfront-thigh) ? 53.009(SFmedial calf) ? 28522.241, where Adj.R ² = 0.96, P < 0.001, and SEE = 724 g. Cross-validation statistics showed no significant differences (P < 0.05) between observed and predicted SLM. Root mean squared errors were smallest for arms (362 g), followed by legs (820 g) and trunk (1477 g). These new prediction equations allow an accurate estimation of segmental lean mass in groups of young adults, but estimation errors of 8 to 14% can occur in certain individuals.  相似文献   

The incidence of depressive symptomatology in juvenile sex offenders with a history of abuse     

Judith V. Becker  Meg S. Kaplan  Craig E. Tenke  Aldo Tartaglini 《Child abuse & neglect》1991,15(4):531-536

Depressive symptomatology was assessed in a sample of 246 male juvenile sex offenders using the Beck Depression Inventory. Of these participants, the racial composition was black = 147, Hispanic = 62, Caucasian = 34. Three adolescents elected not to identify their racial origin. Subjects were divided according to their self-reports of having been sexually or physically abused. The mean Beck score across all subjects was 14.3, a value markedly higher than published norms and indicative of mild depression. Forty-two percent of subjects attained scores indicative of appreciable depressive symptomatology. A history of sexual or physical abuse was significantly related to high Beck scores; abused subjects had a mean Beck score of 16.4, as contrasted to 12.3 for nonabused subjects (Wilcoxon test: z = 2.82; p less than .005). This relationship was apparent across all racial groups. While Hispanic subjects tended to have higher Beck scores and Caucasians lower scores, racial differences were not statistically significant. Results indicate that juveniles who have committed sexual crimes, particularly those with a history of abuse, should be evaluated for depression.  相似文献