Validation of the measures of the transtheoretical model for exercise in an adult African-American sample

Transtheoretical Model for Exercise: Measure Redevelopment and Assessing the Role of Barriers in a Diverse Population

PURPOSE

To redevelop and improve Transtheoretical Model (TTM) exercise measures for Black and Hispanic/Latinx adults. The redeveloped scales will address barriers to exercise potentially relevant to populations of color in the United States (US).

DESIGN

Cross-sectional, split-half measure development.

SETTING

Online survey in the US.

SUBJECTS

450 Black and/or Hispanic/Latinx adults.

MEASURES

Demographics, exercise engagement (IPAQ-SF), stage of change (SOC), decisional balance (DCBL), self-efficacy (SE), and barriers to exercise.

ANALYSIS

Split-half exploratory (EFA) and confirmatory factor analyses (CFA) were executed to establish measurement structure and fit, followed by multivariate analyses to assess constructs by SOC.

RESULTS

EFA/CFA for DCBL revealed three factors (α = .85, .70, .75) which represented Pros of exercise, Cons of exercise related to time and safety, and Cons of exercise related to physical or emotional discomfort. Model fit was adequate (CFI = .89). For SE, two factors (α = .85, .77) resulted with good model fit (CFI = .91). These factors reflected self-efficacy to exercise when confronted with generally challenging situations, and self-efficacy to exercise when specifically experiencing affective difficulties, such as depression or anxiety. Lastly, a novel Barriers measure resulted in three factors (α = .82, .77, .76), representing barriers encountered due to family responsibilities, work obligations, and health challenges, with good model fit (CFI = .95). Shifts in the core TTM constructs by SOC largely mapped onto the theoretical trends expected under the TTM.

CONCLUSION

This study produced systematically developed TTM exercise measures for Black and Hispanic/Latinx adults in the US that address and incorporate important barriers to exercise. This research represents an important step forward in broadening the inclusion of diverse populations to TTM measure development processes and may lead to a better understanding of relevant factors impeding exercise engagement in the US.

Assessing Hair Concerns and Physical Activity Measures Among African American Women: a Mixed-Method Exploratory Study

OBJECTIVES

Research on the association between hair concerns and physical activity (PA) constructs among African American (AA) women is lacking. Demographics such as age and income are indicated to influence hair concerns. In this study, quantitative methods were used to assess demographic differences in hair concerns and associations between hair concerns and PA. Qualitative interviewing explored AA women's views about their hair and engagement in PA.

METHODS

Participants (n = 48; M age = 37.57, SD = 13.72) completed a survey that included demographics, hair type and hairstyle management (HTHM), decisional balance (pros, cons), perceived benefits and perceived barriers scale, and level of physical activity. HTHM consists of six items measuring different factors related to hair concerns. 25 completed a qualitative interview. Chi-square or analysis of variance tests were conducted as appropriate. Qualitative data were analyzed using content analysis.

RESULTS

Proportion differences were noted between age groups (≤ 32 vs. ≥ 33) and average cost of haircare per month (p = .048). A statistically significant effect was noted for average monthly haircare cost and pros (p = .05), and for alter behavior due to hair concerns and perceived benefits to physical activity (p = .05). For level of physical activity, proportion differences were noted between exercisers and non-exercisers for average minutes spent on hair care (p = .009). Qualitative results showed few participants view hair concern as an important barrier to PA. Some participants suggested strategies for overcoming hair concerns to exercise (e.g., braids, twists).

CONCLUSION

Implications of findings including development of PA intervention approaches that may appeal to AA women are discussed.

Development of transtheoretical model measures for assessing decisional balance and temptation to vape

Introduction: Vaping is common among young adults in the United States. The Transtheoretical Model (TTM) has demonstrated success in smoking cessation efforts; however, it has not been comprehensively applied to vaping cessation, and core TTM vaping measures have not been developed. Method: A cross-sectional survey including measures of stage of change (SOC), temptation to vape, and decisional balance (DCBL) was disseminated (n = 459). Items were adapted from TTM smoking scales. The sample was split for exploratory and confirmatory factor analyses (EFA/CFA). Analyses of variance assessed relationships between constructs and SOC. Results: EFA/CFA resulted in one Temptation scale (CFI = .95; α = .87) and two DCBL scales (CFI = .91; Pros α = .72; Cons α = .72). Temptation to vape and Pros of vaping decreased significantly across SOC, while Cons increased significantly. Conclusions: TTM vaping measures for two key TTM constructs were developed utilizing a college sample. Results suggest that the developed measures map well onto the TTM framework.

Managing Covid-19 pandemic and supply chain disruptions through employee attitude: A cross-country analysis based on the transtheoretical model

In this paper, we examine the attitudinal changes and processes regarding Covid-19 guidelines through the lens of the Transtheoretical Model (TTM) among 932 employees in organisations within the emerging markets of China and Qatar, and the implications for the management of operations and supply chain disruptions. Exploratory and confirmatory factor analysis, and hierarchical multiple regression were conducted to validate our measures, confirm model fit, and verify the proposed hypotheses. Our findings reveal that attitude towards the guidelines differ between Chinese and Qatari samples, significantly stronger among the Chinese sample. The TTM dimensions explain a considerable amount of variance in attitude and self-efficacy. Self-efficacy further explains attitudinal changes. Firms should actively source and provide useful and accurate information about COVID 19, including pathological characteristics, propagation, prevention measures, and treatment. Besides, firms should promote the importance of following the guidelines, leaders should set examples, and encourage and empower employees to do so. With the right employee attitude and behavior, firms can manage pandemic-related disruptions within the organization and the supply chain.

Psychometric Properties of the Decisional Balance Scale: A Confirmatory Study on Malaysian University Students

Decisional balance (DB) is the perceived positive aspects (advantages) and negative aspects (disadvantages) that are associated with behavioural change. Behavioural change is dependent on an individual’s thoughts after considering the advantages of engaging in exercise. When the benefits exceed the barriers, people are more likely to make changes after cognitively evaluating the functional aspects. The purpose of the present study is to determine the validity and reliability of the DB scale among Malaysian university students using a confirmatory factor analysis (CFA). A cross-sectional study was carried out among students who took part in the co-curricular program. By using the purposive sampling method, students were recruited and given written informed consent forms after acknowledging they understood the purpose of the study. The DB scale, which consists of two factors, namely, advantages and disadvantages, was used as the instrument in the study. The advantages referred to the benefits of participating in exercise, whereas the disadvantages referred to the barriers to exercise. The 10-item, self-administered questionnaires were distributed to participating students. Data were analysed using Mplus 8 for the CFA. A total of 562 students (females = 444, males = 118) with a mean age of 19.81 years (SD = 1.22) participated in the study. Most of the students were engaged in regular physical activity for at least three exercise sessions (mean = 2.62) per week, and the average duration per session was 43 minutes. The hypothesised measurement model of DB did not fit the data well; thus, the measurement model was re-specified. The final measurement model fit the data well (comparative fit index (CFI) = 0.960, Tucker–Lewis index (TLI) = 0.943, standardised root mean square residual (SRMR) = 0.055, root mean square error of approximation (RMSEA) (90% confidence interval (CI)) = 0.061 (0.047, 0.074), RMSEA p-value = 0.096). The composite reliability values of 0.757 for the advantages and 0.792 for the disadvantages were acceptable. The 10-item DB scale with two factors displayed a good model fit for the data with good scale reliability. This could be beneficial for Malaysian undergraduate students in making decisions before engaging in physical activity. The benefits of, and barriers to, exercise could be an important component that affects their decision making.

Self-Efficacy for Adoption and Maintenance of Exercise Among Fibromyalgia Patients: A Pilot Study

Objective. While multimodal treatment approaches for fibromyalgia (FM), incorporating exercise, have been found most effective, information about factors associated with exercise adoption and maintenance is lacking. Design, Setting, and Methods. Women veterans with FM (N = 19) completed an anonymous Internet survey measuring FM impact (FI), adoption of exercise behavior, and self-efficacy for exercise. Using classifications of behavior specified by the transtheoretical model, the self-efficacy of participants classified in the action or maintenance (AM) stages was compared with those in earlier stages (precontemplation through preparation) of exercise readiness. Multivariate analysis of variance analyses examined differences in FI domains by stage of change. Analysis of covariance examined whether exercise self-efficacy differed by stage of change while controlling for FI. Results. Higher levels of self-efficacy were detected among participants in the AM stages. Participants in the AM stages also reported higher levels of FI symptoms. After controlling for FI, self-efficacy did not differ significantly between the 2 groups; however the effect size was large (η² = .11). Conclusions. Findings of this pilot study suggest a role for self-efficacy in exercise adoption and maintenance, even in the setting of higher FM symptoms. Replication of this study with a larger sample size is warranted.

Physical activity for an ethnically diverse sample of endometrial cancer survivors: a needs assessment and pilot intervention

Objective

To determine the physical activity (PA) behavior, needs and preferences for underserved, ethnically diverse women with a history of endometrial cancer (EC).

Methods

Women with a history of EC (41 non-Hispanic black, 40 non-Hispanic white, and 18 Hispanic) completed a needs assessment during their regular follow-up appointments at Montefiore Medical Center in Bronx, NY, USA. An 8-week pilot PA intervention based on the results of the needs assessment was conducted with 5 EC survivors.

Results

Mean body mass index (BMI) among the 99 respondents was 34.1±7.6 kg/m², and 66% did not exercise regularly. Self-described weight status was significantly lower than actual BMI category (p<0.001). Of the 86% who were interested in joining an exercise program, 95% were willing to attend at least once weekly. The primary motivations were improving health, losing weight, and feeling better physically. Despite the high interest in participation, volunteer rate was very low (8%). However, adherence to the 8-week pilot PA intervention was high (83%), and there were no adverse events. Body weight decreased in all pilot participants.

Conclusion

These data show that ethnically diverse EC survivors have a great need for, and are highly interested in, PA interventions. However, greater care needs to be taken to assess and identify barriers to increase participation in such programs.

Measuring the Processes of Change From the Transtheoretical Model for Physical Activity and Exercise in Overweight and Obese Adults

Purpose:

This study aimed to test three factorial structures conceptualizing the processes of change (POC) from the transtheoretical model and to examine the relationships between the POC and stages of change (SOC) among overweight and obese adults.

Design:

Cross-sectional study.

Setting:

This study was conducted at the University Hospital of Montpellier, France.

Subjects:

A sample of 289 overweight or obese participants (199 women) was enrolled in the study.

Measures:

Participants completed the POC and SOC questionnaires during a 5-day hospitalization for weight management.

Analysis:

Structural equation modeling was used to compare the different factorial structures.

Results:

The unweighted least-squares method was used to identify the best-fit indices for the five fully correlated model (goodness-of-fit statistic = .96; adjusted goodness-of-fit statistic = .95; standardized root mean residual = .062; normed-fit index = .95; parsimonious normed-fit index = .83; parsimonious goodness-of-fit statistic = .78). The multivariate analysis of variance was significant ( p < .001). A post hoc test showed that individuals in advanced SOC used more of both experiential and behavioral POC than those in preaction stages, with effect sizes ranging from .06 to .29.

Conclusion:

This study supports the validity of the factorial structure of POC concerning physical activity and confirms the assumption that, in this context, people with excess weight use both experiential and behavioral processes. These preliminary results should be confirmed in a longitudinal study.

PARCS: A Safety Net Community-Based Fitness Center for Low-Income Adults

BACKGROUND

Physical activity (PA) and fitness are critical to maintaining health and avoiding chronic disease. Limited access to fitness facilities in low-income urban areas has been identified as a contributor to low PA participation and poor fitness.

OBJECTIVES

This research describes community-based fitness centers established for adults living in low-income, urban communities and characterizes a sample of its members.

METHODS

The community identified a need for physical fitness opportunities to improve residents' health. Three community high schools were host sites. Resources were combined to renovate and staff facilities, acquire equipment, and refer patients to exercise. The study sample included 170 members older than age 18 who completed demographic, exercise self-efficacy, and quality of life surveys and a fitness evaluation. Neighborhood-level U.S. Census data were obtained for comparison.

RESULTS

The community-based fitness centers resulted from university, public school, and hospital partnerships offering safe, accessible, and affordable exercise opportunities. The study sample mean body mass index was 35 + 7.6 kg/m(2) (class II obesity), mean age was 50 ± 12.5 years, 66% were Black, 72% were female, 66% completed some college or greater, and 71% had an annual household income of less than $25,000 and supported 2.2 dependents. Participants had moderate confidence for exercise participation and low fitness levels. When compared with census data, participants were representative of their communities.

CONCLUSION

This observational study reveals a need for affordable fitness centers for low-income adults. We demonstrate a model where communities and organizations strategically leverage resources to address disparities in physical fitness and health.

Assessment of processes of change for weight management in a UK sample

OBJECTIVE

The present study aimed to validate the English version of the Processes of Change questionnaire in weight management (P-Weight).

METHODS

Participants were 1,087 UK adults, including people enrolled in a behavioural weight management programme, university students and an opportunistic sample. The mean age of the sample was 34.80 (SD = 13.56) years, and 83% were women. BMI ranged from 18.51 to 55.36 (mean = 25.92, SD = 6.26) kg/m(2). Participants completed both the stages and processes questionnaires in weight management (S-Weight and P-Weight), and subscales from the EDI-2 and EAT-40. A refined version of the P-Weight consisting of 32 items was obtained based on the item analysis.

RESULTS

The internal structure of the scale fitted a four-factor model, and statistically significant correlations with external measures supported the convergent validity of the scale.

CONCLUSION

The adequate psychometric properties of the P-Weight English version suggest that it could be a useful tool to tailor weight management interventions.

Assessing parental self-efficacy for obesity prevention related behaviors

Background

Reliable, valid and theoretically consistent measures that assess a parent’s self-efficacy for helping a child with obesity prevention behaviors are lacking.

Objectives

To develop measures of parental self-efficacy for four behaviors: 1) helping their child get at least 60 minutes of moderate intensity physical activity every day, 2) helping one’s child consume five servings of fruits and vegetables each day, 3) limiting sugary drinks to once a week, and 4) limiting consumption of fruit juice to 6 ounces every day.

Methods

Sequential methods of scale development were used. An item pool was generated based on theory and qualitative interviews, and reviewed by content experts. Scales were administered to parents or legal guardians of children 4–10 years old. The item pool was reduced using principal component analysis. Confirmatory factor analysis tested the resulting models in a separate sample.

Subjects

304 parents, majority were women (88%), low-income (61%) and single parents (61%). Ethnic distribution was 40% Black and 37% white.

Results

All scales had excellent fit indices: Comparative fit index > .98 and chi-squares (Pediatrics 120 Suppl 4:S229-253, 2007) = .85 – 7.82. Alphas and one-week test-retest ICC’s were ≥ .80. Significant correlations between self-efficacy scale scores and their corresponding behaviors ranged from .13-.29 (all p < .03).

Conclusions

We developed four, four-item self-efficacy scales with excellent psychometric properties and construct validity using diverse samples of parents.

Trial registration

Clinical trial registration: NCT01768533.

Is depression associated with contraceptive motivations, intentions, and use among a sample of low-income Latinas?

BACKGROUND

Latinas in the United States experience high rates of unintended pregnancy and low rates of contraception use, yet reasons are not completely understood. Depression is common among pregnant and nonpregnant Latinas; its influence on contraceptive motivations, intentions, and use is understudied.

OBJECTIVES

We sought to 1) describe Latinas' contraceptive motivations, intentions, and use; 2) use structural equation modeling to test associations between depression and contraceptive self-efficacy/motivations/intentions/use; and 3) determine whether associations differ by pregnancy status.

METHODS

This cross-sectional study included Latinas ages 15 to 45 recruited from an urban Federally Qualified Health Center in Baltimore, Maryland. Structured surveys were used to collect data regarding depressive symptoms measured using the PHQ-9. All other constructs were measured with previously validated questions. Constructs included contraceptive self-efficacy, positive and negative contraceptive motivations (perceived advantages and disadvantages of using contraception), contraceptive intentions to begin or continue contraception use, and contraceptive methods currently used.

RESULTS

Among pregnant Latinas, depression was associated with negative motivations (β = 0.16; p < .05), negative motivations were associated with intentions (β = -0.22; p < .01), and contraceptive self-efficacy was associated with intentions (β = 0.43; p < .001). Among nonpregnant Latinas, contraceptive self-efficacy was associated with intentions (β = 0.78; p < .001) and intentions were associated with use (β = 0.40; p < .05).

CONCLUSIONS

Among pregnant Latinas, negative motivations intervene in the association between depression and contraceptive intentions. For nonpregnant Latinas, intentions intervene in the association between self-efficacy and contraceptive use. This study underscores the importance of depression screening during pregnancy and encourages practitioners to target contraceptive motivations to improve contraceptive use.