Journal of General Internal Medicine

, Volume 26, Issue 3, pp 245–250 | Cite as

Racial/Ethnic Disparities in Exercise and Dietary Behaviors of Middle-Aged and Older Adults

Open Access
Original Research



Differences in health behaviors may be important contributors to racial/ethnic disparities in the health status of adults. Studies to date have not compared whether there are health behavior differences in exercise and dietary behaviors among middle-age and older adults in the four largest racial/ethnic categories.


To investigate racial/ethnic differences in exercise and dietary behaviors of middle-aged and older adults.


We used data from the 2007 California Health Interview Survey. Multivariable logistic regression was used to examine interactions between age and race/ethnicity in predicting two categories of health behaviors. Analyses were conducted adjusting for sociodemographic characteristics, health insurance status, and healthcare utilization.


A population-based sample of 33,189 California adults 45 years old and older: 26,522 non-Hispanic whites, 1,686 African American/blacks, 2,565 Asian/Pacific Islanders (1,741 English-proficient; 824 limited English-proficient), and 2,416 Latinos (1,538 English-proficient; 878 limited English-proficient).


Self-report leisure-time physical activity (moderate and vigorous) and daily consumption of fruits and vegetables.


Racial/ethnic minorities generally engaged in less healthy exercise and dietary behaviors than whites, with differences more pronounced in middle adulthood. The disparities were the greatest among English-proficient minorities. Specifically, among middle-aged respondents, all racial/ethnic minorities engaged in less vigorous physical activity than whites (ORs range = 0.28 to 0.73; 95% CI range = 0.16-1.00). Additionally, middle-aged, English-proficient minorities engaged in less moderate physical activity compared to whites (ORs range =0.57 to 0.67; 95% CI range = 0.45-0.79). Furthermore, middle-aged, English-proficient Latinos had a poorer diet than whites (OR = 0.54; 0.39-0.75). Few significant racial/ethnic differences emerged in the exercise and dietary behaviors of older adults.


Racial/ethnic disparities in exercise and dietary behaviors are most notable among middle-aged, acculturated minorities. Results highlight the need to promote positive exercise and dietary behaviors during critical preventive ages, when racial/ethnic disparities are large and the potential to prevent chronic disease is great.


diet exercise older adults racial and ethnic disparities California Health Interview Survey 


Racial/ethnic disparities in health status are well established throughout the lifespan, such that racial/ethnic minorities generally fare worse than non-Hispanic whites on most measures of physical health.1,2 Racial/ethnic minorities, particularly African American/blacks, have a greater risk of developing chronic conditions involving lifestyle factors, such as heart disease,3 high blood pressure,4 and diabetes,5 compared to whites. These disparities are of particular concern given that demographic shifts in the population are expected to be most pronounced among older racial/ethnic minorities,6 potentially widening the disparities gap.

A growing body of evidence indicates that the earlier health-enhancing behaviors are adopted, the greater the likelihood that the chronic illnesses that differentially affect older racial/ethnic minorities can be reduced or prevented.7 One such health behavior, regular physical activity, has been found to be critical for preventing morbidity and mortality,8,9 especially among older adults.2 Although findings are mixed as to whether higher levels of work-related physical activities lead to better health,10,11 population-based studies provide evidence that leisure-time physical activity is a predictor of overall health and physical functioning.12,13 Despite evidence that physical activity decreases with age for all groups, racial/ethnic minorities remain less likely to be physically active in later life compared to non-Hispanic whites.14

A dietary pattern rich in fruits and vegetables is another important health behavior for the prevention of chronic disease. Findings from long-term prospective studies suggest that the frequency of fruit and vegetable intake is inversely associated with cardiovascular disease, diabetes, some cancers, and all-cause mortality, even after adjusting for other health behaviors.15,16 Evidence is mixed regarding dietary differences by race/ethnicity, with some research suggesting that fruit/vegetable consumption is comparable for African American/black and Latino middle-aged and older adults compared to non-Hispanic whites.17 Other studies have found that African American/blacks consume less fruits and vegetables and whites, however.18 To date, little population-based evidence exists on differences between Asian/Pacific Islanders and non-Hispanic whites with regard to fruit and vegetable consumption in middle and later adulthood.

Acculturation may play an important role in whether health behaviors vary by race/ethnicity.19,20 It has been proposed that while immigrants come to the U.S. with relatively advantageous health behaviors, including physical activity and diet, such behaviors deteriorate the longer immigrants live in this country. English-language proficiency is one index of acculturation that has been found to be related to health behaviors. For example, evidence suggests that Latinos who are more acculturated, or speak English well, are less likely to engage in healthy behaviors compared to Latinos who are less acculturated.17,21,22

Despite the available evidence on racial/ethnic differences in health behaviors, very few studies have examined the frequency with which Asian/Pacific Islanders engage in leisure-time physical activity and their dietary behaviors relative to non-Hispanic whites, and rarely have all four major racial/ethnic categories been examined together in a population-based data set. Moreover, few studies have assessed racial/ethnic differences across different age groups in adulthood.17 Accordingly, the current study used data from the 2007 California Health Interview Survey (CHIS), a large population-based sample of California adults, to examine how reports of exercise and dietary behaviors of African American/black, Latino, and Asian/Pacific Islander middle-aged and older adults compared to those of non-Hispanic whites living in California. Given evidence of the importance of acculturation in influencing individuals’ engagement in health behaviors, the current study further sought to examine how English language proficiency contributed to potential disparities in health behaviors for Latinos and Asian/Pacific Islanders. We hypothesized that racial/ethnic disparities in health behaviors would be more pronounced in African American/blacks and less acculturated Asian/Pacific Islanders and Latinos compared to whites. The current study also sought to examine age differences in racial/ethnic disparities in health behaviors in light of evidence that the physically hardiest of individuals, regardless of race/ethnicity, survive into late adulthood.23,24



Data for the current study were derived from the 2007 California Health Information Survey (CHIS), a biannual, random-digit dial telephone survey, representative of the Californian non-institutionalized population. Comparable to response rates of other scientific telephone surveys conducted in California, the response rate ranged from 15.9% to 22.1%, depending on the mode of data collection.25 Interviews were conducted in five languages based on 2000 Census data of the languages spoken most often by Californian residents (English, Spanish, Chinese, Vietnamese, or Korean). The survey underwent refereed translation processes and extensive cultural adaptation to ensure cross-cultural equivalence across items.25


The analytic sample included 33,189 adults 45 years of age or older, as we only were interested in examining differences in exercise and dietary behaviors for middle-aged and older adults in four racial/ethnic categories. This included 26,522 non-Hispanic white, 1,686 African American/black, 2,565 Asian/Pacific Islander (1,741 English-proficient; 824 limited English-proficient), and 2,416 Latino (1,538 English-proficient adults; 878 limited English-proficient) respondents. All white and African American/black respondents were English-proficient. The sample was weighted to account for the complex sampling design, as well as to accurately represent variance estimates.25


Health Behaviors

Two indicators of leisure-time physical activity were evaluated in the current study by prompting participants to think about physical activities or exercise they do in their free time. First, engagement in the recommended amount of moderate physical activity (5 days per week, 30 minutes per day) was assessed by asking participants to “…think about activities that take moderate physical effort, such as walking, bicycling, swimming, dancing, or gardening.” Participants then rated whether and how often (how many days per week and how much time per day) they spent engaging in moderate physical activity. Second, engagement in the recommended amount of vigorous physical activity (3 days per week, 20 minutes per day) was assessed by asking participants to “…think about activities that take hard physical effort, such as aerobics, running, soccer, fast bicycling, or fast swimming.” Frequency and duration was assessed using a similar set of questions as moderate physical activity. Responses were coded to indicate if respondents engaged in the recommended amount of both moderate and vigorous physical activity (1 = did not engage in recommended amount; 2 = did engage in recommended amount).

To assess healthy diet, daily consumption of the recommended amount of fruits and vegetables was asked, i.e., “During the past month, how many times per day, week or month did you eat fruit? Do not count juices” and “During the past month, how many times did you eat vegetables, like green salad, green beans, or potatoes? Do not include fried potatoes.” Participants rated how many and how often they ate fruit or vegetables (1 = per day, 2 = per week, 3 = per month). A variable was derived to indicate frequency of daily fruit and vegetable consumption. As guidelines suggest a minimum of five servings of fruits and vegetables daily for middle-aged and older adults,26 the variable representing frequency of fruits and vegetable consumed per day was dichotomized (1 = ate fruits and vegetables less than five times per day, 2 = ate fruits and vegetables five or more times per day).


Variables identified in previous research on racial/ethnic disparities in health behaviors that exhibited significant racial/ethnic differences in the current sample were treated as covariates. These included sociodemographic characteristics, such as gender, marital status (1 = not currently married, 2 = currently married), education level (1 = < high school, 2 = ≥ high school), and income (1 = <$20,000, 2 = ≥$20,000). In addition, health insurance status (1 = not currently insured, 2 = currently insured) and healthcare utilization (1 = no doctor visit in the past year, 2 = doctor visit in the past year) were included as covariates.

Statistical Analyses

SAS Callable SUDAAN Release 9.0.2 (Research Triangle Institute, Research Triangle Park, NC) was used to conduct analyses to account for the complex sampling design, as well as to use weighted effects for accurate variance estimates. To examine racial/ethnic differences in sociodemographic characteristics, we conducted bivariate analyses using Chi-square tests. To examine racial/ethnic differences in each health behavior, we conducted three multivariable logistic regressions, testing the interaction of race by age. If interactions were significant, we then stratified results for each age group (45-64 vs. 65-85) for ease of interpretation. Adjustments were made for gender, marital status, education, income, insurance status, and healthcare utilization in all multivariate analyses.


Sociodemographic characteristics for the racial/ethnic categories, stratified by age group, are presented in Table 1. Latinos who were limited English-proficient were the least likely to have more than a high school degree (20.7%), have a household income equal to or greater than $20,000/year (48.5%), be continuously insured (60.3%), and have had a doctor visit in the past year (74.1%) compared to the other racial/ethnic categories (P < 0.001). In addition, limited English-proficient Asian/Pacific Islanders (98.8%) and Latinos (97.8%) were more likely to report being foreign-born compared to the other racial/ethnic categories (P < 0.001).
Table 1

Sociodemographic Characteristics, Healthcare Utilization, and Health-Enhancing Behaviors of Respondents by Race/Ethnicity (N = 33,189)


Non-Hispanic white (n = 26,522)

African American/black (n = 1,686)

Asian/Pacific Islander –EP (n = 1,741)

Asian/Pacific Islander – LEP (n = 824)

Latino –EP (n = 1,538)

Latino – LEP (n = 878)



(%) n





(67.5) 14,855

(74.4) 1,063

(69.2) 1,180

(61.8) 443

(78.0) 1,167

(78.0) 617

P < 0.001


(32.5) 11,667

(25.6) 623

(30.8) 561

(38.2) 381

(22.0) 371

(22.0) 261


Gender (female)

(52.8) 16,138

(54.9) 1,093

(57.0) 1,029

(53.8) 470

(52.1) 937

(46.3) 518

P = 0.01

Marital status (married)

(66.2) 13,523

(39.0) 554

(75.6) 1,190

(79.0) 611

(66.3) 796

(66.0) 508

P < 0.001

Education (≥ high school )

(93.4) 25,268

(89.2) 1,524

(94.7) 1,686

(67.7) 600

(71.2) 1,222

(20.7) 210

P < 0.001

Income (≥ $20,000/year)

(89.8) 22,938

(75.9) 1,230

(86.8) 1,532

(54.9) 405

(79.7) 1,171

(48.5) 375

P < 0.001

Nativity (foreign born)

(8.7) 1,961

(7.8) 110

(77.2) 1,229

(98.8) 822

(34.3) 511

(97.8) 841

P < 0.001

Currently insured

(92.9) 24,891

(88.5) 1,534

(91.6) 1,595

(78.4) 656

(86.4) 1,341

(60.3) 595

P < 0.001

Doctor visit in past year

(89.0) 23,837

(89.1) 1,521

(86.6) 1,501

(74.8) 648

(83.6) 1,333

(74.1) 687

P < 0.001

Recommended moderate physical activity

(30.7) 8,525

(21.9) 366

(27.1) 494

(36.3) 294

(23.2) 372

(29.0) 219

P < 0.001

Recommended vigorous physical activity

(14.6) 3,633

(11.3) 166

(12.3) 237

(4.7) 57

(11.5) 187

(3.9) 44

P < 0.001

Recommended amount of daily fruits and vegetables

(8.7) 2,613

(6.0) 112

(8.3) 155

(6.1) 43

(5.1) 97

(2.5) 29

P < 0.001

Note. EP = English-proficient; LEP = limited English-proficient. All percentages are weighted. Sample sizes are unweighted.

The adjusted results of racial/ethnic differences in exercise and dietary behaviors, stratified by age group are presented in Table 2. Non-Hispanic whites reported engaging in all health-enhancing behaviors more frequently than all racial/ethnic minorities in middle, but not late, adulthood. As seen in Table 2, 45-64 year old African American/blacks, as well as English-proficient Asian/Pacific Islanders and Latinos, were significantly less likely to engage in moderate physical activity compared to whites. Only limited English-proficient Asian/Pacific Islanders ≥ 65 years old were significantly more likely to engage in moderate physical activity compared to whites. The age by race/ethnicity interaction was significant (χ 2 difference = 96.07, 5 df, P < 0.001).
Table 2

Adjusted Racial/Ethnic Differences in Leisure-Time Physical Activity and Dietary Behaviors for Middle-aged (45-64) and Older (65-85) Adults (N = 33,189)


Middle-aged adults (n = 19,325)

Older adults (n = 13,864)

Adjusted Odds Ratio (95% CI)

Recommended moderate physical activity: 5 days/week, 30 minutes/day

Non-Hispanic white



African American/black

0.57 (0.45, 0.73)

0.76 (0.57, 1.02)

Asian/Pacific Islander – EP

0.67 (0.56, 0.79)

1.31 (1.00, 1.69)

Asian/Pacific Islander – LEP

0.91 (0.66, 1.25)

2.17 (1.51, 3.12)

Latino – EP

0.60 (0.49, 0.74)

1.11 (0.80, 1.54)

Latino – LEP

0.87 (0.61, 1.23)

1.31 (0.88, 1.95)

Recommended vigorous physical activity: 3 days/week, 20 minutes/day

Non-Hispanic white



African American/black

0.73 (0.53, 1.00)

1.09 (0.70, 1.68)

Asian/Pacific Islander – EP

0.68 (0.52, 0.88)

1.38 (1.00, 1.92)

Asian/Pacific Islander – LEP

0.36 (0.23, 0.55)

0.26 (0.13, 0.53)

Latino – EP

0.73 (0.54, 0.98)

1.12 (0.66, 1.91)

Latino – LEP

0.28 (0.16, 0.49)

0.67 (0.28, 1.57)

Recommended amount of daily fruit and vegetable consumption

Non-Hispanic white



African American/black

0.74 (0.50, 1.09)

0.50 (0.32, 0.77)

Asian/Pacific Islander – EP

0.74 (0.54, 1.01)

1.30 (0.89, 1.90)

Asian/Pacific Islander – LEP

0.68 (0.37, 1.28)

0.99 (0.51, 1.91)

Latino – EP

0.54 (0.39, 0.75)

1.06 (0.60, 1.87)

Latino – LEP

0.57 (0.29, 1.13)

0.23 (0.10, 0.55)

Note: Adjusted models include gender, marital status, education, income, insurance status, and healthcare utilization. EP = English-proficient; LEP = limited English-proficient.

All racial/ethnic minorities 45-64 years old were significantly less likely to engage in vigorous physical activity compared to whites. Only limited English-proficient Asian/Pacific Islanders ≥ 65 years were significantly less likely to engage in vigorous physical activity compared to whites. The age by race/ethnicity interaction was significant (χ 2 difference = 34.96, 5 df, P < 0.001).

Finally, only English-proficient Latinos 45-64 years old were significantly less likely to eat the recommended amount of fruits and vegetables daily compared to whites. Among respondents ≥ 65, African American/blacks and limited English-proficient Latinos were significantly less likely to eat the recommended amount of fruits and vegetables daily compared to whites. The age by race/ethnicity interaction was significant (χ 2 difference = 37.17, 5 df, P < 0.001).


The current study sought to examine racial/ethnic differences in exercise and dietary behaviors among middle-aged and older adults, using population-based data representative of the Californian non-institutionalized population. The low frequency with which respondents reported engaging in these health behaviors, irrespective of age and race or ethnicity, highlights the need to promote these health-enhancing behaviors. Nonetheless, important racial/ethnic differences existed, especially among English-proficient, middle-aged adults.

Specifically, with regard to physical activity, middle-aged racial/ethnic minorities generally fared worse than whites, although these disparities diminished in late adulthood. This was particularly true among more acculturated, English-proficient minorities, including African American/blacks. These results are consistent with other studies, which have demonstrated racial/ethnic disparities in leisure-time physical activity, such that racial/ethnic minorities, including African American/blacks,27,28 Latinos,29 and Asian/Pacific Islanders,30,31 tended to be less physically active compared to whites.32,33 As they come to the United States, immigrants tend to be healthier, but over time, adopt a less healthy lifestyle.34 The generally low rates of engagement in physical activity across all racial/ethnic categories highlight the need to consider important barriers to exercise. For example, disparities in physical activity may be a function of health-related issues,35, 36, 37 as well as the lack of environmental and social resources available to these individuals,35,38 such as the lack of safe public parks or recreational facilities.37 Moreover, physically demanding occupations, which are common among individuals of lower socioeconomic status, usually involve less flexible work schedules and less opportunities for engagement in leisure-time activities.39 Although health issues may serve as a barrier to exercise, paradoxically, older adults with a chronic condition may be motivated to exercise,35 which might partially explain why rates of engagement in moderate activity are higher among this age group. Another possible explanation for the lack of disparities in late adulthood is that these older individuals, regardless of race or ethnicity, may be physically resilient individuals who survived the various chronic conditions and associated disability of middle adulthood.24

Results for healthy diet were similar to those for physical activity. In general, more acculturated minorities fared worse than whites. Evidence is mixed about racial/ethnic disparities in healthy diet and many studies have not focused specifically on middle-aged or older adults. In one exception, researchers found that older African American/blacks had a lower intake of fruits and vegetables compared to whites,27 which is consistent with the results of the current study. Results from the current study also revealed a disparity in healthy diet for middle-aged English-proficient Asian/Pacific Islanders and Latinos compared to whites, consistent with an acculturation effect.22 In addition, studies on disparities in diet have focused on how the lower socioeconomic status of these minorities may limit the availability, affordability, and choice of healthy food options. Given that fruits and vegetables are often more costly than less healthy options,40 less accessible in lower-income neighborhoods, and less likely to be chosen by individuals with lower educational attainment,18,41 racial/ethnic minorities with lower incomes and education levels may be less likely to consume a healthy diet. Results of the current study suggest that limited English-proficient Latinos had the lowest educational attainment compared to the other racial/ethnic categories, which might help explain their dietary disadvantage compared to non-Hispanic whites. We adjusted for socioeconomic variables, however, and disparities still existed, suggesting that other relevant variables such as specific knowledge related to nutrition acquired from nutrition education messages – a majority of which are in English – could be influencing the results of the current study.42

Study Limitations and Future Directions

In evaluating the results of the current study, some limitations and directions for future research should be noted. First, results cannot be applied to individuals residing in other areas of the country in which diet and exercise behaviors may differ as a function of availability of healthy food options, opportunities for physical activity, and regional norms. For example, rates of engagement in health-enhancing behaviors may depend on whether individuals are from rural or urban areas, with minorities in rural areas demonstrating healthier dietary behaviors.43 Second, only a subsection of health behaviors were examined. Other behaviors (e.g., fat consumption) may exhibit a different pattern of findings. For example, although we found racial/ethnic differences in fruit and vegetable consumption, a nationally representative sample of older African American/blacks and whites found no difference in the amount of fat consumption.27 In a related vein, only leisure-time physical activity was assessed, not physical activity as part of the work day or for transportation, the latter of which may be more common in middle-aged minority respondents.44

Results from the current study also suggest avenues for future research. First, researchers need to better understand particular risk and protective factors that make some minorities more vulnerable to adopting unhealthy lifestyles. Second, physicians need to counsel patients about culturally-appropriate ways to engage in a healthy diet and increase exercise and to provide direct assistance in ways to access community resources. Finally, intervention strategies tailored to the unique life contexts of specific racial/ethnic categories should be implemented at multiple levels to encourage healthy exercise and dietary behaviors, including the individual (e.g., low-literacy nutrition information),45 social network (e.g., involvement of the family and community, such as church-based interventions),46 as well as public health programs and health policies (e.g., Eat Better & Move More program,47 zoning to improve neighborhood designs that promote physical activity and access to healthy food outlets).48


A healthy diet and exercise, if adopted, can reduce or prevent many of the chronic illnesses that affect older adults. More effort is needed to promote positive exercise and dietary behaviors earlier in life to have the greatest impact on reducing prominent racial/ethnic disparities and preventing disease.



The authors would like to thank Drs. Sheldon Greenfield, Sherrie Kaplan, Quyen Ngo-Metzger, and Dana Mukamel for their invaluable feedback on earlier versions of this manuscript. Dr. Sorkin received support from a K01 award (NIDDK DK078939).

Conflict of Interest

None disclosed.

Open Access

This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.


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Copyright information

© The Author(s) 2010

Authors and Affiliations

  1. 1.Division of General Internal Medicine and Primary Care and Health Policy Research InstituteUniversity of California IrvineIrvineUSA

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