Research Article Activity Determinants among Mexican American Women in a Border Setting Bobby Guinn and Vern Vincent ABSTRACT Background: Mexican American women have the highest leisure-time physical inactivity prevalence of any ethnic minority group. Purpose: This study examined a sample of Mexican American females living near the U.S.-Mexico border to determine whether the variables of age, health status, educational level, marital status, and acculturation distinguished between those who are physically active and those who are physically inactive. Methods: Participants included 379 women ranging in age from 22 to 58 years. Data was gathered through a self-report survey instrument with discriminant analysis used to test for variable differentiation between active and inactive subjects. Results: Present activity was comparable to national representative samples, and the discriminant function indicated higher acculturative status and better perceived health differentiated between those women reporting themselves to be physi- cally inactive versus those reporting to be physically active. Discussion: Physical activity interventions targeting border Mexican American women should account for varying acculturation levels. Translation to Health Education Practice: To be effective, program strategies designed to promote physically active lifestyles among border Mexican American women should be linguistically appropriate and culturally sensitive to optimize behavior change. BACKGROUND physical activity.4 being overweight decreases life expectancy Insuffi cient physical activity is an impor- An alarming issue attendant to this by one to three years and increases the risk tant correlate of a number of health disor- problem is the very low level of physical from all-cause mortality from 50 to 100%.7 ders, including increased risk of coronary activity among minority ethnic groups. This Despite these health risks, U.S. overweight heart disease, colon cancer, hypertension, is most evident in the high prevalence of and obesity estimates have dramatically in- and osteoporosis.1,2 Crespo3 defi ned physical physical inactivity observed among Mexican creased in recent years, particularly among inactivity as a lack of participation in any American women. The literature indicates Mexican Americans. While the prevalence of type of leisure-time physical activity, viewing that Mexican American females, regardless overweight (i.e., body mass index [BMI] of its measurement as less complicated than of occupational status, were least likely to at least 25.0) in the overall adult population validly quantifying amounts and patterns of engage in moderate or vigorous physical is approximately 66.3%, among Mexican physical activity. As a result of technologi- activity or to be physically active during Americans it is 75.8%.12 Additionally, obesity cal advances engineering physical exertion leisure time when compared with Black and out of daily routines, participation during non-Hispanic White females.5,6 Bobby Guinn is a professor in the Department of leisure time has become the most widely Regular physical activity can help to Health and Kinesiology, University of Texas–Pan studied form of activity assessment. Even control body weight, and measuring activ- American, 1201 W. University Dr., Edinburg, TX though most people have greater amounts ity levels is of particular concern in view 78541; E-mail: [email protected]. Vern Vincent of leisure time than in the past, our society of our nation’s overweight and obesity is a professor emeritus in the Department of is becoming more sedentary; it is estimated prevalence. Healthy People 2010 placed over- Computer Information Systems and Quantita- that only 32% of the U.S. population age weight and obesity among the country’s tive Methods, University of Texas–Pan Ameri- 18 and older regularly engages in moderate ten leading health indicators.7-11 Indeed, can; E-mail: [email protected]. 148 American Journal of Health Education — May/June 2008, Volume 39, No. 3 AAJJOOHHEE MMaayy--JJuunnee 0088 IIPPCC..iinndddd 114488 44//3300//0088 66::2266::5544 PPMM PPrroocceessss BBllaacckk Bobby Guinn and Vern Vincent (i.e., BMI of 30.0 to 39.9) is prevalent in activity than those with poorer health.23,24 and no effect.41 Lara and others34 attribute 40.0% of Mexican American women,13 and Education, as a criterion of socioeconomic this lack of a clear relationship to either an morbid obesity (i.e., BMI of 40.0 or greater) status, exerts a powerful influence on insuffi cient number and/or quality of stud- increased four- to fi vefold among this group health-related behavior.25 Persons of high ies or multiple studies that demonstrated between 1990 and 2000.14 educational attainment are more physically opposite effects. The enormity of the physical inactivity active than those of lower educational level, and overweight/obesity issue among Mexi- encountering fewer economic, physical, and PURPOSE can American women is underscored by social constraints to leisure activity, and In view of the disturbing overweight and their level of chronic disease risk and mor- responding more readily to appeals from obesity trend among Mexican American fe- bidity. When compared with non-Hispanic health professionals to modify their lifestyles males and its potential impact on a number Whites, Mexican American females have two related to physical activity.11,26,27 The effect of of co-morbidities, it is important that factors to three times greater Type 2 diabetes rates, marital status on leisure activity participa- infl uencing physical activity among this sub- are 6 times more likely to develop end-stage tion is generally a result of the orderly life group be investigated. These trends assume renal disease, and are more subject to severe that marriage presents for a number of particular urgency given that Hispanics are hyperglycemia and its related complications health-related behaviors. In addition to the largest and fastest growing ethnic minor- of hypertension, hyperlipidemia, and ath- being more physically active, married per- ity in the United States and are projected to erosclerotic vascular disease.15-19 sons generally enjoy better health and greater comprise 21% of the population by 2020.42 Energy imbalance resulting from a com- life expectancy than singles.25 Widowhood Therefore, the purpose of this study was to bination of increased energy intake and and divorce, which can result in degrees of extend the research on factors infl uencing decreased energy expenditure contributes social isolation as well as changes in eco- leisure-time physical activity participa- to overweight and obesity. Interventions nomic status, are associated with decreased tion among Mexican American females. designed to reduce energy imbalance must activity participation.28 Specifically, the influence of age, health, include strategies that create increased Acculturation is the social process of be- education, marital status, and acculturation expenditure and/or decrease intake. Moder- coming adapted to a new or different culture was assessed through identifi cation of which ate and regular physical activity is a critical and is considered to be a prominent step variables distinguish between physically ac- component of any weight-control program; toward assimilation.29 This process allows tive and physically inactive females. however, studies on the topic report decreased persons to effectively function in a society by METHODS activity to be an independent predictor of distancing their culture of origin and accept- obesity in female Mexican Americans.20,21 ing the host country’s mainstream beliefs Sample and Administration Because of the extremely high prevalence of and customs.30 Landrine and Klonoff31 view The study sample was drawn from the physical inactivity among this population, acculturation as a continuum from tradi- rural Lower Rio Grande Valley (LRGV) identifi cation of factors associated with regu- tional to acculturated; traditional persons region of South Texas. The LRGV lies in lar activity involvement must occur before remain immersed in many of the beliefs, the easternmost part of the U.S.-Mexico effective interventions can be developed. practices, and values of their own culture border, with a population overwhelmingly Studies of leisure-time physical activity whereas highly acculturated persons have of Mexican origin. Subjects were the parents determinants in the general adult popula- rejected the beliefs and practices of their and adult relatives of students enrolled in tion have reported age, health, education, own culture in favor of those of the main- three border-serving elementary schools and marital status as factors infl uencing stream culture. The literature dealing with from a LRGV school district in which Mexi- participation. Acculturation, because of the effects of acculturation on health-related can Americans comprise 97.2% of the total its infl uence on the overall well-being of behaviors and outcomes among persons student body. A self-report questionnaire an individual, has been widely investigated of Mexican origin indicates use of illicit instrument was distributed to all students among foreign-born Mexican Americans drugs and alcohol and tobacco, patterns in three randomly selected fourth- and fi fth- regarding relationships with selected health of unhealthy dietary practices, and obesity grade classes in each of the three schools. and behavioral outcomes. Adult leisure-time prevalence are stronger among those who Students were given two copies of the ques- physical activity is negatively related to age; are more acculturated than among those less tionnaire copies and asked to present them as people grow older, the prevalence of activ- acculturated.20,32-35 However, no clear asso- to parents and/or adult family members in ity participation decreases.2,6,22 Health status ciation has been demonstrated between ac- the household, returning them within three is positively related to physical activity; per- culturation and physical activity prevalence days. Students were informed that taking sons with better health have greater activity among this population. Results of studies the questionnaires home was voluntary repertoire size and degree of involvement examining this relationship report negative and that their relatives’ participation was as well as stronger likelihood of continuing associations,36-38 positive associations,39,40 both voluntary and anonymous. The study’s American Journal of Health Education — May/June 2008, Volume 39, No. 3 149 AAJJOOHHEE MMaayy--JJuunnee 0088 IIPPCC..iinndddd 114499 44//3300//0088 66::2266::5544 PPMM PPrroocceessss BBllaacckk Bobby Guinn and Vern Vincent purpose and voluntary nature were also as moderate activities included bowling, Statistical Analysis indicated on the instrument. All Human dancing, golf, yoga, walking at a moder- Two-group discriminant analysis with Subjects Research Board stipulations were ate or vigorous pace, softball, and lifting stepwise procedure employing the Ma- observed to protect the confi dentiality and weights. Vigorous activity examples included halanobis D2 method was used to determine rights of the respondents. As an incentive to aerobics, jogging/running, basketball, tennis, which of the investigated variables made the present the questionnaire to adult household soccer, riding a stationary bicycle or bicy- greatest contribution in discerning between members, students were given a voucher for cling outside, swimming, and roller skating/ physically inactive and physically active a fat-free frozen dessert for each returned rollerblading. Mexican American women.50 Pearson cor- respondent-completed questionnaire. This Health status. Perceived health status was relation coeffi cients were computed to ascer- incentive-by-extension procedure (i.e. the measured by the question, “In general, what tain degree of association between variables adult’s incentive to participate is seeing the is your overall heath?” Possible responses as well as descriptive statistics determined child rewarded) is a recognized method of (excellent, very good, good, fair, poor) were for all variables. All data analyses were con- increasing response rate and data adequacy.43 scored on a scale of 5 to 1. For the purposes ducted using SPSS Version 13.0. A total of 648 instruments were distributed of psychosocial research, this subjective and 494 were returned. Deletion of errone- evaluation has been demonstrated to be RESULTS ously marked instruments yielded 469 usable a valid indicator of wellness regardless of The study sample (N=379) ranged in tests; of these, 379 respondents identifi ed ethnicity.45,46 age from 22 to 58 years, with a mean of 33.2 themselves as Mexican American females, Educational level. Educational attain- years. Participants’ present physical activity and they comprised the study sample. ment was based on responses to the ques- level was low, with 21.4% indicating no Instrumentation tion, “How much education have you had?” weekly participation and 37.2% reporting Each item on the survey instrument used Possible responses, scored on a scale of 1 only one to two 10-minute leisure-time to collect the data was dually printed in to 5, were “8th grade or less,” “some high sessions per week. These inactivity levels both English and Spanish to accommodate school,” “high school or trade school gradu- are comparable with those reported by na- non-English-speaking participants, with ate,” “some college,” or “college graduate or tional representative samplings of Mexican items translated into Spanish and back- higher.” American women.39 translated to ensure accuracy, clarifi cation, Acculturation. English-language use, Self-reported health status indicated and content preservation. For the purposes which measures functional integration the participants perceived themselves to of the study, physical activity was defi ned on into the U.S. mainstream, is recognized be relatively healthy, with 68.1% reporting the instrument as engagement in moderate as one of the most powerful indicators of overall health as very good to excellent. The to vigorous activities during leisure and/or acculturation.47 Accordingly, participants’ majority, 74.5%, reported themselves as cur- free time. Age, gender, ethnicity, and marital acculturative status was determined through rently married. Educational attainment was status were appraised through single-item Marin et al.’s48 language-use acculturation relatively low; 39.3% did not graduate from indices, while activity level, health status, scale. Developed specifi cally for Hispan- either high school or trade school, 25.0% education, and acculturation were measured ics, this scale has correlated highly with were high school or trade school graduates, as described below. the acculturation criteria of a respondent’s and 35.7% reported some college-level work Present activity level. Current physical generation (r=0.69), length of residence in or higher. Acculturative status was moder- activity level was assessed by the subject’s the United States (r=0.76), and age of ar- ate, with the sample’s mean acculturation response to the statement, “The number of rival (r=-0.72).49 The scale consists of four score being 10.3 on a scale of 4 to 20. Table times a week I participate in at least 10 min- statements: (1) In general, what language 1 presents a descriptive profi le of the par- utes of moderate to vigorous leisure-time do you read and speak? (2) What language ticipants. physical activity which causes an increase do you usually speak at home? (3) In which Correlation coeffi cients between activ- in breathing or heart rate is....” Possible re- language do you think? (4) What language ity level and investigated variables revealed sponses ranged from “none” to “5 or more do you usually speak with your friends? Each statistically signifi cant positive relationships times.” This outcome measure was based on statement is rated on a fi ve-point response with acculturation (r=.252, p<.001) and the National Center for Health Statistics14 option ranging from “Spanish only,” “Span- health status (r=.179, p<.01). The reason method of appraisal and reporting leisure- ish better than English,” “both equally,” for these relatively modest correlations is time physical activity among adults. To help “English better than Spanish,” “English only.” the large sample size, which tends to over- clarify this item, activity examples based The instrument’s theoretical range is 4 to 20, power the test.50 Nevertheless, they indicate on the Compendium of Physical Activity with a higher score indicating greater ac- physical activity levels were higher among metabolic equivalent (MET) values were culturation. The scale’s internal consistency those more acculturated and reporting bet- listed on the instrument.44 Examples given alpha for the present study was .96. ter health. This fi nding is consistent with 150 American Journal of Health Education — May/June 2008, Volume 39, No. 3 AAJJOOHHEE MMaayy--JJuunnee 0088 IIPPCC..iinndddd 115500 44//3300//0088 66::2266::5544 PPMM PPrroocceessss BBllaacckk Bobby Guinn and Vern Vincent research suggesting that more acculturated female Hispanics perceive themselves as be- Table 1. Description of the Sample ing healthier than less acculturated female Variable No. % Hispanics.51 To achieve the study’s purpose of iden- Weekly activity sessions tifying which factors influence physical None 81 (21.4) activity participation, the polar-extremes One 60 (15.8) approach was used to group subjects into Two 81 (21.4) inactive and active categories.50 Those re- Three 76 (20.1) Four 40 (10.6) spondents indicating none or one activity Five or more 41 (10.7) session per week were placed in the physi- cally inactive group, and those indicating Self-rated health four or more sessions per week were placed Excellent 93 (24.5) in the physically active group. This method Very good 169 (44.6) yielded 141 physically inactive and 81 physi- Good 102 (26.9) cally active respondents. Fair 10 (2.6) Poor 5 (1.4) A discriminant function model was generated to determine what variable dif- Marital status ferences existed between the inactive and Married now 282 (74.5) active groups. The discriminant analysis Never married 48 (12.7) produced a statistically signifi cant Wilks’ Divorced/separated 43 (11.3) lambda, .91 (alpha=.001), indicating a dif- Widowed 6 (1.5) ference between the groups. Additionally, Educational level the discriminant function was evaluated 8th-grade or less 105 (27.7) for predictive accuracy by means of a clas- Some high school 44 (11.6) sification “hit” matrix. Cross-validation High school or trade school graduate 95 (25.0) “leave-one-out” classifi cation analysis pro- Some college 84 (22.3) duced a 53% hit ratio, which did not meet College graduate or higher 51 (13.4) the 67% hit ratio necessary to be at least one-fourth greater than that achieved by chance.50 Therefore, whereas the function differentiating between border-area Mexican The literature is clear on the relationship discriminates between inactive and active American women who were active and those between health and activity involvement. As groups in statistical significance, it only who were not. In contrast, age, education, a direct result of impairment in function marginally discriminated between groups and marital status showed no discriminating and physical disability produced by health in practical signifi cance. The discriminant value between the two groups. conditions, physical activity levels decline analysis retained acculturation and health The lack of infl uence shown by age and commensurately with poorer health.2 Al- status as the only statistically signifi cant education on physical activity participation though previously mentioned studies have (p<.05) predictors of membership in the may be explained by the Third National reported positive, negative, or no effects of physically inactive or active groups. In other Health and Nutrition Examination Survey acculturation on leisure-time activity par- words, among the border Mexican American (NHANES III) findings, which reported ticipation, this study indicates that it has a women studied, only acculturative status that Mexican Americans are (1) inactive strong positive infl uence on such behavior. and perceived health differentiated between beginning early in adult life rather than Attempts to explain what Williams52 referred those who were inactive and those who were decreasing their activity levels with age, and to as an epidemiological paradox—i.e., poor active. Table 2 presents the structure matrix (2) more inactive than non-Hispanic Whites socioeconomic status and favorable health for the activity participation infl uences serv- regardless of educational attainment.6 As for indicators among border Hispanic popu- ing as independent variables. marital status, its lack of effect on activity lations—have centered around the impact participation was due to the statistically of acculturative status on health behavior. DISCUSSION greater proportion of the sample reporting At the same time, the less acculturated an As mentioned above, results indicated themselves as currently married versus those individual is, the less likely he or she is to that acculturative level and, to a lesser who reported being unmarried, divorced/ engage in health-risking behaviors common degree, health status were the key factors separated, or widowed. to the mainstream culture. American Journal of Health Education — May/June 2008, Volume 39, No. 3 151 AAJJOOHHEE MMaayy--JJuunnee 0088 IIPPCC..iinndddd 115511 44//3300//0088 66::2266::5555 PPMM PPrroocceessss BBllaacckk Bobby Guinn and Vern Vincent further illustrate the problems in assessing disparities reported. More research is needed Table 2. Discriminate Function physical activities outside of leisure time to explore the role that incidental, transpor- Structure Matrix and may not take into account the cultural tational, and occupational activities play in validity of these types of questions (e.g., Mexican American women’s reporting of Variable Function Loadings determining whether Mexican Americans physical activity engagement. Acculturation* .857 interpret “leisure time” differently than the Despite its limitations, this study adds rest of society). Additionally, Dixon et al.53 to the physical activity literature in an under- Health status* .600 suggested the absence of a clear relationship reported and rapidly growing population may be due to the diffi culties in differentiat- group. Many factors affect activity participa- Educational level .526 ing populations based on only one charac- tion, and acculturation and health status are teristic of acculturation, such as language but two considerations—albeit important Age .161 use, without adjusting for non-language ones—in the design, planning, and imple- domains such as values and attitudes. mentation of public health initiatives for Marital status .024 Several limitations of this study should the Mexican American community. This be acknowledged. The participants were a study’s fi ndings provide a starting point *p<.05 convenience sample of Mexican American for the development of culturally sensitive women residing in a rural southern Texas programs promoting leisure-time activ- The fi nding that greater acculturation border area, and the results’ generalizability ity participation targeting border Mexican is positively associated with leisure-time may therefore be limited geographically and Americans. Although it is promising from physical activity may, in part, be the result of demographically. Moreover, data was gath- a statistical standpoint, the study also re- accompanying English-language profi ciency. ered through the use of a self-report instru- veals the need for further investigation as Conversely, the lack of English-language ment, and this methodological limitation to the role that other factors may play in skills could serve as an obstacle to physical may not take into account (1) the respon- activity prevalence among an ethnic mi- activity involvement as border Mexican dents’ interpretation of all items, or (2) the nority having the nation’s greatest physical American women are exposed to English- possibility that some instruments may have inactivity disparity. language messages regarding the health- been completed by persons other than those promoting benefi ts of physical activity at from the intended study sample (though REFERENCES work, in civic and social environments, and it should be emphasized that each instru- 1. Blair SN, Church TS. 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Marin G, Sabogal F, VanOss-Marin B, paradox” of health indicators and the Texas- 154 American Journal of Health Education — May/June 2008, Volume 39, No. 3 AAJJOOHHEE MMaayy--JJuunnee 0088 IIPPCC..iinndddd 115544 44//3300//0088 66::2266::5555 PPMM PPrroocceessss BBllaacckk