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- Larsson, Ingrid, 1963, et al.
(författare)
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Body composition through adult life : Swedish reference data on body composition
- 2015
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Ingår i: European Journal of Clinical Nutrition. - : Springer Science and Business Media LLC. - 0954-3007 .- 1476-5640. ; 69:7, s. 837-842
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Tidskriftsartikel (refereegranskat)abstract
- Background/Objectives:The prevalence of obesity, defined as body mass index (BMI) greater than or equal to30 kg/m2, differs between populations; however, there is a need for data on description on body composition in reference populations of different ages and from different countries. The objective of this study was to pool dual-energy X-ray absorptiometry (DXA) body composition reference data from population-based Swedish cohorts.Subjects/Methods:Four population-based cross-sectional cohort studies including 1424 adult Swedes were divided into five age groups (20–29, 30–39, 40–49, 50–61 and 75 years of age); BMI 24.6±3.9 kg/m2 were pooled. Body composition was measured with DXA.Results:The difference in BMI from the youngest to the oldest age group was 3.2 and 4.3 kg/m2 in men and women, respectively (P<0.001, both sexes), and fat mass (FM) was 9.9 and 9.1% higher in the oldest compared with the youngest men and women (P<0.001, both sexes). Fat-free mass (FFM) remained stable up to 60 years of age in men (P=0.83) and was lower at 75 years of age compared with the younger ages. In women, FFM was lower from age 60. From youngest to oldest age groups, height-adjusted FM differed from 4.6 to 7.8 kg/m2 in men and from 6.8 to 10.8 kg/m2 in women (P<0.001, both sexes).Conclusions:Our results provide reference data on body composition in Swedish populations. BMI and FM were higher among older age groups compared with the younger ones. FFM remained stable up to 60 years of age and was lower first among the 75 years of age.
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| 5. |
- Lundén, A, et al.
(författare)
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Validation of the Obesity-related Problem Scale version 3
- 2010
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Ingår i: Obesity Reviews (Poster presentations). - 1467-7881. ; 11:Supplement s1
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Konferensbidrag (refereegranskat)abstract
- Introduction: The Obesity-related Problem scale (OP) is a quality of life instrument developed to measure the impact of obesity on psychosocial functioning. Subjects are asked how bothered they are by their obesity in specific social situations. A new version of the instrument (OP V3) has been developed. Eight more items were added. Also, an avoidance scale (AV) was added to each item, measuring avoidance of social activities. Thus, the OP V3 contains both a distress and an avoidance scale. The aim of the present study was to investigate the construct validity of OP V3. Methods: One eighty subjects, BMI 40.7˘ 5.3 kg/m2, completed the OP V3. The construct validity of OP V3 was studied by means of exploratory factor analyses. Internal consistency reliability, floor and ceiling effects, concurrent validity and known group validation were also examined. SF-36 was used to evaluate the concurrent validity. Results: Scale internal consistency reliability was high for both the distress and avoidance scales (Cronbach’s alpha = 0.95 for both). Floor and ceiling effects were small. Exploratory factor analyses confirmed the homogeneity and stability of the construct. Psychometric results were cross-validated and replicated in subgroups by gender, age and BMI. Multitrait-Multimethod analysis showed moderate associations between the OP V3 scales and the SF-36 scales. Correlations ranged from )0.32 to )0.58, P < 0.001. As expected, OP V3 scales were most highly correlated with Social functioning, Mental health and Vitality (r = )0.51 to )0.58, P < 0.001). Conclusions: Results confirm that OP V3 is a psychometrically valid measure of the impacts of obesity on psychosocial functioning.
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