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1.
Br J Nutr ; 113(4): 654-64, 2015 Feb 28.
Artigo em Inglês | MEDLINE | ID: mdl-25630436

RESUMO

Dietary assessment in older adults can be challenging. The Novel Assessment of Nutrition and Ageing (NANA) method is a touch-screen computer-based food record that enables older adults to record their dietary intakes. The objective of the present study was to assess the relative validity of the NANA method for dietary assessment in older adults. For this purpose, three studies were conducted in which a total of ninety-four older adults (aged 65-89 years) used the NANA method of dietary assessment. On a separate occasion, participants completed a 4 d estimated food diary. Blood and 24 h urine samples were also collected from seventy-six of the volunteers for the analysis of biomarkers of nutrient intake. The results from all the three studies were combined, and nutrient intake data collected using the NANA method were compared against the 4 d estimated food diary and biomarkers of nutrient intake. Bland-Altman analysis showed a reasonable agreement between the dietary assessment methods for energy and macronutrient intake; however, there were small, but significant, differences for energy and protein intake, reflecting the tendency for the NANA method to record marginally lower energy intakes. Significant positive correlations were observed between urinary urea and dietary protein intake using both the NANA and the 4 d estimated food diary methods, and between plasma ascorbic acid and dietary vitamin C intake using the NANA method. The results demonstrate the feasibility of computer-based dietary assessment in older adults, and suggest that the NANA method is comparable to the 4 d estimated food diary, and could be used as an alternative to the food diary for the short-term assessment of an individual's dietary intake.


Assuntos
Envelhecimento , Dieta/efeitos adversos , Estado Nutricional , Idoso , Idoso de 80 Anos ou mais , Envelhecimento/sangue , Envelhecimento/urina , Ácido Ascórbico/administração & dosagem , Ácido Ascórbico/sangue , Biomarcadores/sangue , Biomarcadores/urina , Computadores , Registros de Dieta , Proteínas Alimentares/administração & dosagem , Ingestão de Energia , Estudos de Viabilidade , Feminino , Avaliação Geriátrica , Humanos , Internet , Masculino , Avaliação Nutricional , Reprodutibilidade dos Testes , Reino Unido , Ureia/urina , Interface Usuário-Computador
2.
Alzheimers Dement ; 3(3): 217-26, 2007 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-19595941

RESUMO

Innovative technologies are rapidly emerging that offer caregivers the support and means to assist older adults with cognitive impairment to continue living "at home." Technology research and development efforts applied to older adults with dementia invoke special grant review and institutional review board concerns, to ensure not only safe but also ethically appropriate interventions. Evidence is emerging, however, that tensions are growing between innovators and reviewers. Reviewers with antitechnology biases are in a position to stifle needed innovation. Technology developers who fail to understand the clinical and caregiving aspects of dementia may design applications that are not in alignment with users' capabilities. To bridge this divide, we offer an analysis of the ethical issues surrounding home monitoring, a model framework, and ethical guidelines for technology research and development for persons with Alzheimer's disease and their caregivers.

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