Abstract
Objectives
The relationship of body mass index (BMI) with functional status differs in diversified geriatric population and various settings. In this study, we aimed to investigate whether BMI is related to functional status independent of age, nutritional status, multimorbidity, and polypharmacy in a group of Turkish community-dwelling female elderly.
Design
This study was conducted using a cross-sectional study design.
Setting
Geriatric outpatient clinic of a university hospital.
Participants
There were 438 female patients aged 60 years or older included in the analysis.
Measurements
Body mass indexes were calculated from weight (kg) divided by the square of height (m). Functional status was assessed with the evaluation of activities of daily living (ADL) and instrumental activities of daily living (IADL) scales. Diseases and drugs were determined after the evaluation of the patients with comprehensive geriatric assessment, physical examination, first-line biochemical tests, and using the patients’ self-report and current medication lists.
Results
In total, 438 subjects comprised our study cohort. Mean age was 73.3 ± 6.9 years. Mean BMI was 27.8 ± 5.2 kg/m2. Linear regression analysis revealed significant and independent association of lower BMI with higher ADL and IADL scores (p = 0.02, B = −0.10; p < 0.001, B = −0.17, respectively). ADL and IADL were significantly negatively correlated with BMI in subjects with normal nutrition (p = 0.03, r = −0.122; p = 0.001, r = −0.183) but not in subjects with malnutrition risk or malnutrition. We suggest that lower BMI is associated with better functional status in Turkish community-dwelling female older people. This association is prominent in the subjects with normal nutritional status.
Conclusions
Our study recommends the need for further studies accounting for the nutritional status on the relationship between BMI and functionality in different populations and in different settings. It represents an important example for diversity in BMI-functionality relationship.
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References
Reuben DB, Rosen S (2009) Principles of geriatric assessment. In: Halter JB, Ouslander JG, Tinetti ME, Studenski S, High KP, Asthana S (eds) Hazzard’s geriatric medicine and gerontology, 6th edn. McGraw Hill, New York, pp 141–152
Beck AM, Ovesen L, Osler M (1999) The ‘Mini Nutritional Assessment’ (MNA) and the ‘Determine Your Nutritional Health’ Checklist (NSI Checklist) as predictors of morbidity and mortality in an elderly Danish population. Br J Nutr 81:31–36
British Association for Parenteral and Enteral Nutrition Malnutrition Advisory Group (2000) Guidelines for detection and management of malnutrition. BAPEN, Reddich
Cook Z, Kirk S, Lawrenson S, Sandford S (2005) Use of BMI in the assessment of undernutrition in older subjects: reflecting on practice. Proc Nutr Soc 64:313–317
Imai K, Gregg EW, Chen YJ, Zhang P, de Rekeneire N, Williamson DF (2008) The association of BMI with functional status and self-rated health in US adults. Obesity (Silver Spring) 16:402–408
Covinsky KE, Hilton J, Lindquist K, Dudley RA (2006) Development and validation of an index to predict activity of daily living dependence in community-dwelling elders. Med Care 44:149–157
Stuck AE, Walthert JM, Nikolaus T, Büla CJ, Hohmann C, Beck JC (1999) Risk factors for functional status decline in community-living elderly people: a systematic literature review. Soc Sci Med 48:445–469
Galanos AN, Pieper CF, Cornoni-Huntley JC, Bales CW, Fillenbaum GG (1994) Nutrition and function: is there a relationship between body mass index and the functional capabilities of community-dwelling elderly? J Am Geriatr Soc 42:368–373
Jensen GL, Friedmann JM (2002) Obesity is associated with functional decline in community-dwelling rural older persons. J Am Geriatr Soc 50:918–923
Friedmann JM, Elasy T, Jensen GL (2001) The relationship between body mass index and self-reported functional limitation among older adults: a gender difference. J Am Geriatr Soc 49:398–403
den Ouden ME, Schuurmans MJ, Mueller-Schotte S, Brandm JS, van der Schouw YT (2013) Domains contributing to disability in activities of daily living. J Am Med Dir Assoc 14:18–24
Kaiser R, Winning K, Uter W, Volkert D, Lesser S, Stehle P, Kaiser MJ, Sieber CC, Bauer JM (2010) Functionality and mortality in obese nursing home residents: an example of ‘risk factor paradox’? J Am Med Dir Assoc 11:428–435
Bahat G, Tufan F, Saka B, Akin S, Ozkaya H, Aydin Y, Erten N, Karan MA (2012) Which body mass index (BMI) is better in the elderly for functional status? Arch Gerontol Geriatr 54:78–81
WHO (World Health Organisation) (2004) Appropriate body-mass index for Asian populations and its implications for policy and intervention strategies. Lancet 363:157–163
Lawton MP, Brody EM (1969) Assessment of older people: self-maintaining and instrumental activities of daily living. Gerontologist 9:179–186
Vellas B, Guigoz Y, Garry PJ, Nourhashemi F, Bennahum D, Lauque S, Albarede JL (1999) The Mini Nutritional Assessment (MNA) and its use in grading the nutritional state of elderly patients. Nutrition 15:116–122
Bauer JM, Kaiser MJ, Anthony P, Guigoz Y, Sieber CC (2008) The Mini Nutritional Assessment—its history, today’s practice, and future perspectives. Nutr Clin Pract 23:388–396
de Onis M, Habicht JP (1996) Anthropometric reference data for international use: recommendations from a World Health Organization Expert Committee. Am J Clin Nutr 64:650–658
http://www.tuik.gov.tr/HbPrint.do?id=16124. Accessed Oct 2014
http://tuikapp.tuik.gov.tr/adnksdagitapp/adnks.zul. Accessed Oct 2014
Acknowledgments
GB participated in the design of the study, carried out the studies, analyzed the data, and wrote the manuscript. YA, ZB, and OS helped to collect the data and carried out the sample analyses. FT, AT, and TSA helped to carry out the studies and/or study design. ZB, OS, NE, and MAK participated in the design of the study and/or helped to draft the manuscript. All of the authors have made substantial contributions to interpretation of the data and critical revision of the article for important intellectual content. All authors have read and approved the final manuscript. There is no source of funding for the present study.
Conflict of interest
None of the authors has any conflicts of interest or financial or other contractual agreements that might cause conflicts of interest. On behalf of all authors, the corresponding author states that there is no conflict of interest.
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Bahat, G., Tufan, A., Aydin, Y. et al. The relationship of body mass index and the functional status of community-dwelling female older people admitting to a geriatric outpatient clinic. Aging Clin Exp Res 27, 303–308 (2015). https://doi.org/10.1007/s40520-014-0291-2
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DOI: https://doi.org/10.1007/s40520-014-0291-2