Relationship of protein, calcium and vitamin D consumption with body composition and fractures in oldest-old independent people.

BACKGROUND & AIM: Some studies state that the protein intake has a protective effect against bone mass loss, while others show that the combination of low calcium intake and high protein consumption increases the risk of fractures. Perhaps this phenomenon is also altered by the consumption of vitamin D after the age 80 years. This study aimed to identify if there is an association of protein, calcium and vitamin D intake with body composition and fractures in community dwelling 80 years or older independent people. METHODS: This is a cross-sectional observational analytic study. We invited community dwelling 80 years or older independent people, with chronic diseases under control, according to the scientific guidelines. The food intake was obtained through a one-day food record (FR) and Avanutri software (4.1 version) was used to calculate the intake of total calories, calcium, protein, and other food nutrients. The body composition and bone densitometry were evaluated by whole-body Dual Energy X-ray Absorptiometry (DXA). The morphometric vertebral fractures were assessed through conventional X-ray of the vertebral, level T4 to L4, on side face position - semi quantitative technique. RESULTS: One hundred and fifty-nine 80 years or older independent people, mean age 87.0 ± 3.9 years old were studied. The mean calcium intake was 834.6 ± 374.7 mg/day and vitamin D was 6.1 ± 24.3 µg/day, in both cases they were complemented by supplements to reach the recommendations. The mean protein intake was 72.9 ± 26.8 g/day, we found that 48.4% had low muscle mass; there was a frequency of 45.3% of osteoporosis; and vertebral fractures in 24.7% of them. The estimates of the logistic regression model with the outcome variable obesity and low muscle mass with reference to "low muscle mass" showed that the 80 years or older independent people who have a fracture are more likely to be obese with low muscle mass compared to those with only low muscle mass. CONCLUSION: In the studied population of 80 years or older independent people, we observed that among all the nutrients studied, only dietary protein per g/kg/day was associated with body composition and bone mineral density, but not with fracture, although the elderly who have fracture are more likely to be obese with low muscle mass compared to those not obese with low muscle mass. More studies about nutrients intakes and its relationship with muscle and bone health in this population is necessary.

Uncontrolled Diabetes as an Associated Factor with Dynapenia in Adults Aged 50 Years or Older: Sex Differences.

BACKGROUND: Epidemiological studies demonstrate an association between diabetes and low neuromuscular strength (NMS). However, none have grouped participants into nondiabetics (ND), undiagnosed diabetics (UDD), controlled diabetics (CD), and uncontrolled diabetics (UCD) or investigated what glycated hemoglobin levels (HbA1c) are associated with low NMS (dynapenia) by sex. METHODS: We analyzed the association between UDD, CD, and UCD and dynapenia, the extent to which the different groupings of these individuals modifies this association and the association between HbA1c levels and NMS, by sex, in a cross-sectional study involving 5,290 participants ≥50 years from the ELSA study. In the first two analyses, logistic regression models were used with dynapenia (grip strength <26 kg in men and <16 kg in women) as outcome and diabetes (ND, UDD, CD, and UCD) as exposure. Next, linear regression was performed with grip strength as the outcome, and the participants were classified based on HbA1c level as exposure. The models were adjusted by sociodemographic, behavioral, and clinical characteristics. RESULTS: Compared to ND, only UCD was associated with dynapenia (men OR = 2.37 95% CI 1.36-4.14; women OR = 1.67 95% CI 1.01-2.79). This association was less clear, particularly in women, when CD and UCD groups were merged. HbA1c ≥6.5% in men and ≥8.0% in women were associated with lower NMS. CONCLUSIONS: UCD increases the chance of dynapenia in both sexes. The different groupings based on diabetes status modify the association between UCD and dynapenia. The threshold of HbA1c associated with reduced NMS is lower in men compared to women.

Correlação entre estado nutricional e força de preensão palmar em idosos / Correlation between nutritional status and hand grip strength in elderly

No envelhecimento ocorrem mudanças corpóreas, dentre as quais a diminuição de massa magra com prejuízo na força muscular, afetando a capacidade funcional. Atualmente, o teste de Força de Preensão Palmar (FPP) está sendo utilizado para avaliar a força muscular global como auxiliar na avaliação nutricional. OBJETIVO: Verificar a correlação entre o estado nutricional e a FPP em idosos. MÉTODOS: Estudo transversal realizado com idosos atendidos em ambulatórios de uma universidade pública federal. Para a classificação do estado nutricional, utilizam-se: índice de massa corpórea (IMC), avaliação nutricional por meio da Mini-Avaliação Nutricional (MAN), circunferência da panturrilha (CP) e FPP realizada com auxílio de um dinamômetro manual hidráulico. Utilizaram-se como referência para a FPP e IMC os pontos de cortes divididos por gênero (projeto SABE/OPAS). RESULTADOS: Amostra constituída (n=42) na sua maioria por mulheres (66,7%), apresentando em média 26,82 pontos na MAN e pelo IMC a maioria dos idosos eram eutróficos - 46,4% mulheres e 57,1% homens. Homens e mulheres obtiveram média superior a 31 cm de circunferência da panturrilha (CP). A média de força para homens foi superior ao valor obtido pelas mulheres. Não houve diferença estatisticamente significante entre o estado nutricional classificado pelo IMC e a FPP para homens e mulheres; houve correlação estatisticamente significante (p 0,008) entre o estado nutricional classificado pela MAN e a força de preensão palmar na amostra total. CONCLUSÕES: Dentre os métodos para avaliar o estado nutricional, apenas a MAN correlacionou-se positivamente com a FPP, que é uma medida associada à funcionalidade em idosos.

In the aging process, body changes occur, such as reduction of lean mass with impaired muscle strength, affecting the functional capacity. Currently, the Hand Grip Strength Test (HGST) is being used to evaluate the overall muscle strength as an aid in nutritional assessment. OBJECTIVE: To investigate the correlation between the HGST and nutritional status in the elderly. METHODS: Cross sectional study on elderly people attending outpatient of a Federal Public University. To evaluate the nutritional status, were used: body mass index (BMI), nutritional evaluation by Mini Nutritional Assessment (MNA), calf circumference and HGST performed with the aid of a hydraulic hand dynamometer. It was used as reference for the GSTP and the BMI, cutoff points divided by gender (SABE / OPAS Project). RESULTS: The sample was mostly formed (n = 42) by women (66.7%), with an average of 26.82 points in the MNA and BMI, most seniors were eutrophic - 46.4% women and 57.1% men. Men and women were averaged over 31 cm of calf circumference. The average strength for men was higher than women. There was no statistically significant difference between nutritional status classified by BMI and HGST for men and women, there was a statistically significant correlation (p 0.008) between the nutritional status classified by MNA and hand grip strength in the total sample. CONCLUSIONS: Among the methods to assess nutritional status, only MNA correlated positively with the HGST, which is a measure associated with the functionality in the elderly.