Asociación de fuerza prensil y extensores de rodilla con estado nutricional de adultos mayores pertenecientes a la comunidad / Association of grip strength and knee extensors with nutritional status of community-dwelling older adults

Antecedentes y objetivo: Determinar la asociación de fuerza prensil de mano y extensores de rodilla con el estado nutricional de adultos mayores de la comunidad. Material y métodos: Estudio observacional transversal. Se analizó peso y talla de 847 adultos mayores según índice de masa corporal y se clasificaron en cuatro categorías nutricionales según el Ministerio de Salud de Chile. Se evaluó la fuerza prensil de mano y extensores de rodilla para ambas extremidades. La fuerza fue normalizada por masa corporal y se utilizó la correlación de Spearman entre índice de masa corporal y fuerza muscular. Resultados: La muestra fue de 582 mujeres y 265 hombres con edad promedio de 71,72±7,09. Las mujeres presentaron un índice de masa corporal de 30,03±5,48 y los hombres 27,64±4,05, la categoría más numerosa fue normopeso (n = 288) y la menor bajo peso (n = 74). La fuerza prensil de mano presentó mayor correlación que extensores de rodilla, específicamente, fuerza prensil de mano derecha (r: -0,40). La mayor correlación y significancia la presentó la categoría obesa para todas las mediciones de fuerza, resultando la fuerza prensil de mano derecha como la más alta (r: -0,29). Conclusiones: El aumento del estado nutricional de los adultos mayores influye negativamente sobre la fuerza muscular. La mejor asociación entre índice de masa corporal y fuerza muscular fue la prensión de mano derecha. Resalta el hallazgo del aumento de la esperanza de vida a medida que disminuye el IMC de la muestra. Futuros estudios deberían generar percentiles y valores normalizados en población chilena.(AU)

Aim: To determine the association of hand grip strength and knee extensor strength with the nutritional status of community-dwelling older adults. Material and methods: Observational cross-sectional study. Weight and height of 847 older adults were analyzed according to body mass index and classified into four nutritional categories according to the Chilean Ministry of Health. Hand grip and knee extensors strength for both extremities were evaluated. Strength was normalized by body mass. Spearman's correlation between body mass index and muscle strength was used. Results: The sample was 582 women, 265 men and an average age of 71.72±7.09. The women had a BMI of 30.03±5.48 and the men of 27.64 ± 4.05, the most numerous category was normal weight (n = 288) and the lowest low weight (n = 74). Hand grip strength presented a higher correlation than knee extensors, specifically, right hand grip strength (r: −0.40). The highest correlation and significance were presented by the obese category for all strength measurements, with right hand grip strength being the highest (r: −0.29). Conclusions: The increase in the nutritional status of older adults has a negative influence on muscle strength. The best association between body mass index and muscle strength was the right hand grip. The finding of the increase in life expectancy as the nutritional status of the sample decreases stands out. Future studies are needed to generate percentiles and normalized values in the Chilean population.(AU)

[Association of grip strength and knee extensors with nutritional status of community-dwelling older adults]. / Asociación de fuerza prensil y extensores de rodilla con estado nutricional de adultos mayores pertenecientes a la comunidad.

AIM: To determine the association of hand grip strength and knee extensor strength with the nutritional status of community-dwelling older adults. MATERIAL AND METHODS: Observational cross-sectional study. Weight and height of 847 older adults were analyzed according to body mass index and classified into four nutritional categories according to the Chilean Ministry of Health. Hand grip and knee extensors strength for both extremities were evaluated. Strength was normalized by body mass. Spearman's correlation between body mass index and muscle strength was used. RESULTS: The sample was 582 women, 265 men and an average age of 71.72±7.09. The women had a BMI of 30.03±5.48 and the men of 27.64 ± 4.05, the most numerous category was normal weight (n = 288) and the lowest low weight (n = 74). Hand grip strength presented a higher correlation than knee extensors, specifically, right hand grip strength (r: -0.40). The highest correlation and significance were presented by the obese category for all strength measurements, with right hand grip strength being the highest (r: -0.29). CONCLUSIONS: The increase in the nutritional status of older adults has a negative influence on muscle strength. The best association between body mass index and muscle strength was the right hand grip. The finding of the increase in life expectancy as the nutritional status of the sample decreases stands out. Future studies are needed to generate percentiles and normalized values in the Chilean population.

A VO2peak prediction model in older adults' patients with Parkinson's disease.

INTRODUCTION: Cardiopulmonary function is compromised in people with Parkinson's Disease (PD) and might be related with mortality in advanced stages of the disease. Therefore, estimating the peak oxygen uptake (VO2peak) to monitor its progression overtime and to prescribe exercise is important in clinical context. This study aimed at developing a VO2peak prediction model for older adults' patients with PD based on functional tests used in the physiotherapy clinical settings. MATERIAL AND METHODS: Eighteen patients with PD (63.8 ± 6.6 years old) took part in the study. All participants underwent a basic anthropometry, functional tests, fulfilled a physical activity questionnaire (IPAQ-S) and cardiopulmonary exercise testing on a cycle ergometer. Linear regression and distributional assumptions were performed to develop the prediction model. The Bland-Altman plots were applied for the agreement analysis. RESULTS: The best prediction model included gender, age, waist circumference, BMI, IPAQ-S score, and SPPB functional test score (R2 = 0.87; estimation error: 2.19 ml·kg·min-1; p < 0.001). The distribution assumptions showed validity of the model (p > 0.05), the estimation bias showed a mean of 0.0056 and no pair of data were outside the limits of agreement according to the Bland-Altman diagram. CONCLUSIONS: Accessible, simple, and low-cost variables were useful for validly predicting VO2peak in patients with PD.