Valores normativos para la fuerza prensil manual en adultos mayores colombianos estimados mediante regresión cuantílica / Normative values for handgrip strength in Colombian older adults: Estimation by quantile regression

Introducción: La fuerza prensil manual (FPM) es un indicador robusto de la salud biológica de los adultos mayores. Objetivo: El objetivo de este estudio es doble: 1) estimar los valores normativos de la FPM absoluta y relativa, específicos de adultos mayores de 60 años en Colombia, mediante modelos de regresión cuantílica, 2) comparar los valores normativos de la FPM absoluta y relativa en adultos mayores colombianos con los de diferentes países. Métodos: Es un análisis transversal a una muestra de 5.377 adultos mayores. La FPM fue evaluada con un dinamómetro digital TKK 5101 (Takei Scientific Instruments Co., Ltd., Tokyo, Japan). La FPM relativa se estimó a partir de la división por el peso en kilogramos. Los valores normativos de la FPM absoluta y de la relativa, fueron estimados por medio de modelos de regresión cuantílica para los percentiles P5, P10, P25, P50, P75, P90 y P95 desarrollados de manera independiente para cada sexo; todos los análisis fueron ajustados por el factor de expansión. Resultados: Los valores de la FPM absoluta fueron considerablemente mayores en los hombres (P50 60 a 64 años = 32,0kg, P50 > 85 años = 18,0kg) en comparación con las mujeres (P50 60 a 65 años = 19,0kg; P50 > 85 años = 12,0kg), en todos los grupos etarios; adicionalmente, a medida que aumenta la edad en ambos sexos, se presenta una disminución en los valores de la FPM absoluta y relativa. Conclusiones: Los valores normativos estimados en población colombiana fueron generalmente menores a los reportados en otros estudios en todo el mundo. Estos resultados podrían tener relación con la variabilidad en las metodologías utilizadas para evaluar la FPM y los métodos de estimación, los cuales podrían influir en las discrepancias entre los diferentes reportes.(AU)

Introduction: Handgrip strength is a robust indicator of the biological health of elderly. Objective: The purpose of this study is twofold: 1) estimate the normative values of absolute and relative handgrip strength, specific to adults over 60 years of age in Colombia, using quantile regression models: 2) compare the normative values of absolute and relative handgrip strength in Colombian older adults with those from different countries. Methods: A cross-sectional analysis of a sample of 5377 older adults. Handgrip strength was evaluated with a TKK 5101 digital dynamometer (Takei Scientific Instruments Co., Ltd., Tokyo, Japan). Relative handgrip strength was estimated by dividing by weight in kilograms. The absolute and relative handgrip strength normative values were estimated through quantile regression models for the percentiles P5, P10, P25, P50, P75, P90 and P95, they were developed independently for each sex; all analyzes were adjusted for the expansion factor. Results: Absolute handgrip strength values were considerably higher in men (P50 60–64 years = 32.0 kg, P50 >85 years = 18.0 kg) compared to women (P50 60–65 years = 19.0 kg; P50 >85 years = 12.0 kg), in all age groups. Additionally, as age increases in both sexes, there is a decrease in the values of absolute and relative manual grip strength. Conclusions: The estimated normative values in the Colombian population were generally lower than those reported in other studies around the world. These results could be related with methodologies used variability to evaluate handgrip strength and the estimation methods, which could influence the discrepancies between the different reports.(AU)

[Normative values for handgrip strength in Colombian older adults: Estimation by quantile regression]. / Valores normativos para la fuerza prensil manual en adultos mayores colombianos estimados mediante regresión cuantílica.

INTRODUCTION: Handgrip strength is a robust indicator of the biological health of elderly. OBJECTIVE: The purpose of this study is twofold: 1) estimate the normative values of absolute and relative handgrip strength, specific to adults over 60 years of age in Colombia, using quantile regression models: 2) compare the normative values of absolute and relative handgrip strength in Colombian older adults with those from different countries. METHODS: A cross-sectional analysis of a sample of 5377 older adults. Handgrip strength was evaluated with a TKK 5101 digital dynamometer (Takei Scientific Instruments Co., Ltd., Tokyo, Japan). Relative handgrip strength was estimated by dividing by weight in kilograms. The absolute and relative handgrip strength normative values were estimated through quantile regression models for the percentiles P5, P10, P25, P50, P75, P90 and P95, they were developed independently for each sex; all analyzes were adjusted for the expansion factor. RESULTS: Absolute handgrip strength values were considerably higher in men (P50 60-64 years = 32.0 kg, P50 >85 years = 18.0 kg) compared to women (P50 60-65 years = 19.0 kg; P50 >85 years = 12.0 kg), in all age groups. Additionally, as age increases in both sexes, there is a decrease in the values of absolute and relative manual grip strength. CONCLUSIONS: The estimated normative values in the Colombian population were generally lower than those reported in other studies around the world. These results could be related with methodologies used variability to evaluate handgrip strength and the estimation methods, which could influence the discrepancies between the different reports.