Research Report. Factors Contributing to 50-ft Walking Speed and Observed Ethnic Differences in Older Community-Dwelling Mexican Americans and European Americans.

Autor: Quiben, Myla U., Hazuda, Helen P.
Předmět:
LIFE skills
AGE distribution
ANTHROPOMETRY
CHI-squared test
COMPARATIVE studies
CONCEPTUAL structures
CONFIDENCE intervals
DIABETES
EXERCISE tests
HEALTH status indicators
HISPANIC Americans
INCOME
RANGE of motion of joints
LEG
LONGITUDINAL method
OBSTRUCTIVE lung diseases
MATHEMATICAL models
MULTIVARIATE analysis
MUSCLE contraction
MUSCLE strength
SCIENTIFIC observation
PROBABILITY theory
RACE
REGRESSION analysis
RESEARCH funding
SEX distribution
STATISTICS
STROKE
SURVEYS
T-test (Statistics)
VISION disorders in old age
WALKING
WHITE people
THEORY
SOCIOECONOMIC factors
EDUCATIONAL attainment
PAIN measurement
BODY mass index
LIFESTYLES
INTER-observer reliability
GERIATRIC rehabilitation
CROSS-sectional method
VITAL capacity (Respiration)
PHYSICAL activity
DATA analysis software
DESCRIPTIVE statistics
OLD age
Zdroj: Physical Therapy; Jun2015, Vol. 95 Issue 6, p871-883, 13p
Abstrakt: Background. Mexican Americans comprise the most rapidly growing segment of the older US population and are reported to have poorer functional health than European Americans, but few studies have examined factors contributing to ethnic differences in walking speed between Mexican Americans and European Americans. Objective. The purpose of this study was to examine factors that contribute to walking speed and observed ethnic differences in walking speed in older Mexican Americans and European Americans using the disablement process model (DPM) as a guide. Design. This was an observational, cross-sectional study. M.U. Quiben, PT, PhD, DPT, MS, GCS, NCS, Department of Physical Therapy, University of North Texas Health Science Center, 3500 Camp Bowie Blvd, MET-555, Ft Worth, TX 76107 (USA). Address all correspondence to Dr Quiben at: Myla.Quiben@unthsc. edu. H.P. Hazuda, PhD, Department of Medicine, Division of Nephrology, University of Texas Health Science Center at San Antonio, San Antonio, Texas. Methods. Participants were 703 Mexican American and European American older adults (aged 65 years and older) who completed the baseline examination of the San Antonio Longitudinal Study of Aging (SALSA). Hierarchical regression models were performed to identify the contribution of contextual, lifestyle/anthropometric, disease, and impairment variables to walking speed and to ethnic differences in walking speed. Results. The ethic difference in unadjusted mean walking speed (Mexican Americans =1.17 m/s, European Americans =1.29 m/s) was fully explained by adjustment for contextual (ie, age, sex, education, income) and lifestyle/anthropometric (ie, body mass index, height, physical activity) variables; adjusted mean walking speed in both ethnic groups was 1.23 m/s. Contextual variables explained 20.3% of the variance in walking speed, and lifestyle/anthropometric variables explained an additional 8.4%. Diseases (ie, diabetes, stroke, chronic obstructive pulmonary disease) explained an additional 1.9% of the variance in walking speed; impairments (ie, FEV1, upper leg pain, and lower extremity strength and range of motion) contributed an additional 5.5%. Thus, both nonmodifiable (ie, contextual, height) and modifiable (ie, impairments, body mass index, physical activity) factors contributed to walking speed in older Mexican Americans and European Americans. Limitations. The study was conducted in a single geographic area and included only Mexican American Hispanic individuals. Conclusions. Walking speed in older Mexican Americans and European Americans is influenced by modifiable and nonmodifiable factors, underscoring the importance of the DPM framework, which incorporates both factors into the physical therapist patient/client management process. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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