Physical functioning and survival: Is the link weaker among Latino and black older adults?

Physical Activity Level and Specific Type of Exercises Among US Middle-Aged and Older Adults: Findings From the Behavioral Risk Factor Surveillance Survey

BACKGROUND

This study aimed to assess physical activity level and identify specific types of exercises by sex, race/ethnicity, and age for adults 50 years and older.

METHODS

Behavioral Risk Factor Surveillance System 2013, 2015, and 2017 data were used to study US adults 50 years and older on their specific types of exercises, stratified by sex, race/ethnicity, and age. Weighted logistic regression was used to model physical exercise level and specific types of exercises.

RESULTS

The sample included 460,780 respondents. Non-Hispanic Black and Hispanic were less likely than non-Hispanic White to meet the recommended physical activity level (Odds ratio [OR] = 0.73, P < .0001 and OR = 0.96, P = .04, respectively). Walking was the most participated type of exercise, followed by gardening, for both men and women, all racial/ethnic groups, and all age groups. Non-Hispanic Blacks were more likely to participate in walking (OR = 1.19, P = .02) and less likely to participate in gardening (OR = 0.65, P < .0001) than non-Hispanic Whites. Men were more likely to engage in strenuous exercises than women. The average number of minutes on walking was the longest among all types of specific exercises.

CONCLUSIONS

The types of exercises were mostly walking and gardening for adults aged 50 and older. Non-Hispanic Black adults had less physical activity than non-Hispanic White and were less likely to engage in gardening.

Physical work conditions and disparities in later life functioning: Potential pathways

Research in the US on the social determinants of reduced physical functioning at older ages has typically not considered physical work conditions as contributors to disparities. We briefly describe a model of occupational stratification and segregation, review and synthesize the occupational health literature, and outline the physiological pathways through which physical work exposures may be tied to long-term declines in physical functioning. The literature suggests that posture, force, vibration, and repetition are the primary occupational risk factors implicated in the development of musculoskeletal disorders, through either acute injuries or longer-term wear and tear. Personal risk factors and environmental and structural work characteristics can modify this association. In the long-term, these musculoskeletal disorders can become chronic and ultimately lead to functional limitations and disabilities that interfere with one's quality of life and ability to remain independent. We then use data on occupational characteristics from the Occupational Information Network (O*NET) linked to the 2019 American Community Survey (ACS) to examine disparities among sociodemographic groups in exposure to these risk factors. Occupations with high levels of these physical demands are not limited to those traditionally thought of as manual or blue-collar jobs and include many positions in the service sector. We document a steep education gradient with less educated workers experiencing far greater physical demands at work than more educated workers. There are pronounced racial and ethnic differences in these exposures with Hispanic, Black, and Native American workers experiencing higher risks than White and Asian workers. Occupations with high exposures to these physical risk factors provide lower compensation and are less likely to provide employer-sponsored health insurance, making it more difficult for workers to address injuries or conditions that arise from their jobs. In sum, we argue that physical work exposures are likely an important pathway through which disparities in physical functioning arise.

Links Between Mortality and Socioeconomic Characteristics, Disease Burden, and Biological and Physical Functioning in the Aging Chinese Population

OBJECTIVES

Determinants of mortality may depend on the time and place where they are examined. China provides an important context in which to study the determinants of mortality at older ages because of its unique social, economic, and epidemiological circumstances. This study uses a nationally representative sample of persons in China to determine how socioeconomic characteristics, early-life conditions, biological and physical functioning, and disease burden predict 4-year mortality after age 60.

METHODS

We used data from the China Health and Retirement Longitudinal Study. We employed a series of Cox proportional hazard models based on exact survival time to predict 4-year all-cause mortality between the 2011 baseline interview and the 2015 interview.

RESULTS

We found that rural residence, poor physical functioning ability, uncontrolled hypertension, diabetes, cancer, a high level of systemic inflammation, and poor kidney functioning are strong predictors of mortality among older Chinese.

DISCUSSION

The results show that the objectively measured indicators of physical functioning and biomarkers are independent and strong predictors of mortality risk after accounting for several additional self-reported health measures, confirming the value of incorporating biological and performance measurements in population health surveys to help understand health changes and aging processes that lead to mortality. This study also highlights the importance of social and historical context in the study of old-age mortality.

Trajectories of physical functioning among older adults in the US by race, ethnicity and nativity: Examining the role of working conditions

Latinos in the US live significantly longer than non-Latino whites, but spend more years disabled. Differentials in socioeconomic status account for part, but not all, of the difference in older age disability between Latinos and whites. We hypothesize that a factor often ignored in the literature—the fact that Latinos, on average, have more physically strenuous jobs than non-Latino whites—contributes to the higher Latino risk of functional limitations at older ages. We use longitudinal data from the 1998–2014 Health and Retirement Study (HRS) comprising 17,297 respondents. Compared to US-born whites, Latinos, especially Latino immigrants, report substantially higher levels of physical effort at work. Latino-black differences are much smaller than Latino-white differences. As hypothesized, physical work effort is strongly related to functional limitations. However, differentials in physical work effort for Latinos and whites in their fifties and early sixties are weakly related to Latino-white differentials in FL at later ages.