Parents' food choice for their preschool-aged children: A means-end investigation.

BACKGROUND: Despite the growing literature on the importance of parental feeding practices, the factors that influence how parents make decisions regarding the foods they offer to their young children are not fully understood. Means-end theory and its associated methodology known as laddering provide a useful framework for characterizing the relationships between the attributes of a choice option (e.g., a food item), the consequences (i.e., the benefits or costs/risks) associated with those attributes and the personal values (i.e., enduring beliefs) those consequences help reinforce. The present research uses this means-end perspective to enrich our understanding of how parents make food choices for their preschool-aged children. METHODS: Interviews were conducted with parents (N = 33) of 3- to 5-year-old children to explore the factors underlying parents' decisions regarding the foods they recently offered, prefer to offer and avoid offering to their preschooler. The resulting data were transcribed, content analysed and summarized in a series of summary diagrams known as hierarchical value maps (HVMs). RESULTS: Study results indicate that although most parents reported trying to make food decisions because they want their child to be healthy, factors such as avoiding fights/battles and low perceived likelihood their child would eat a food may be barriers to offering certain foods. CONCLUSIONS: Taken together, these study findings enhance our understanding of the range of meanings underlying parents' food choice decisions and suggest opportunities for interventions to improve the quality of foods that parents offer to their children at home.

Measuring Physical Activity Regulatory Styles and Identity Among Adults 55 Years or Older.

Objectives. The purpose of this study was to examine the psychometric properties of modified versions of the Behavioral Regulation in Exercise Questionnaire and Exercise Identity Scale for use with adults ages ≥55 years to measure regulatory styles and identity related to physical activity. Methods. Participants [Mage = 66.29 years (SD = 7.06)] answered an online questionnaire twice across a four-week timescale. We assessed measurement invariance and convergent and divergent validity based on relations between regulatory styles, identity, and physical activity. Results. Both measures were invariant across gender and time, and findings support the convergent and divergent validity of the scales. Notably, a two-factor model of identity representing role identity and physical activity beliefs provided the best fit, and physical activity beliefs was more strongly related to introjected regulation. Discussion. Taken together, there is evidence that these modified scales are suitable for use with adults ages ≥55 years.

Questions to Measure Enjoyment of and Satisfaction With Physical Activity: Are They Appropriate for Use in an Older Population?

BACKGROUND AND OBJECTIVES: Enjoyment of and satisfaction with physical activity have been proposed as two actionable mechanisms to promote sustained engagement in physical activity. An accurate understanding of how, why, and for whom these two mechanisms work (or not) in response to a particular intervention strategy is contingent on having suitable measures for the population of interest. This study aims to determine whether the Physical Activity Enjoyment Scale-8 and a novel approach to the measurement of satisfaction with physical activity are suitable for use among older adults (M age = 66.25 years; range = 55-91 years). RESEARCH DESIGN AND METHODS: Participants answered an online questionnaire twice across 4 weeks. Measurement invariance was assessed within a structural equation modeling framework; convergent validity was assessed by correlating the latent variables enjoyment and satisfaction with each other and with physical activity behavior. RESULTS: Both measures were invariant between gender and across time. Enjoyment and satisfaction were related to each other (r = 0.72) and to physical activity (r = 0.48 and 0.64, respectively). DISCUSSION AND IMPLICATIONS: Results support the suitability of these measures as tools to assess enjoyment of and satisfaction with physical activity among older adults.

Accelerometer and GPS Data to Analyze Built Environments and Physical Activity.

Purpose: Most built environment studies have quantified characteristics of the areas around participants' homes. However, the environmental exposures for physical activity (PA) are spatially dynamic rather than static. Thus, merged accelerometer and global positioning system (GPS) data were utilized to estimate associations between the built environment and PA among adults. Methods: Participants (N = 142) were recruited on trails in Massachusetts and wore an accelerometer and GPS unit for 1-4 days. Two binary outcomes were created: moderate-to-vigorous PA (MVPA vs. light PA-to-sedentary); and light-to-vigorous PA (LVPA vs. sedentary). Five built environment variables were created within 50-meter buffers around GPS points: population density, street density, land use mix (LUM), greenness, and walkability index. Generalized linear mixed models were fit to examine associations between environmental variables and both outcomes, adjusting for demographic covariates. Results: Overall, in the fully adjusted models, greenness was positively associated with MVPA and LVPA (odds ratios [ORs] = 1.15, 95% confidence interval [CI] = 1.03, 1.30 and 1.25, 95% CI = 1.12, 1.41, respectively). In contrast, street density and LUM were negatively associated with MVPA (ORs = 0.69, 95% CI = 0.67, 0.71 and 0.87, 95% CI = 0.78, 0.97, respectively) and LVPA (ORs = 0.79, 95% CI = 0.77, 0.81 and 0.81, 95% CI = 0.74, 0.90, respectively). Negative associations of population density and walkability with both outcomes reached statistical significance, yet the effect sizes were small. Conclusions: Concurrent monitoring of activity with accelerometers and GPS units allowed us to investigate relationships between objectively measured built environment around GPS points and minute-by-minute PA. Negative relationships between street density and LUM and PA contrast evidence from most built environment studies in adults. However, direct comparisons should be made with caution since most previous studies have focused on spatially fixed buffers around home locations, rather than the precise locations where PA occurs.

Neighborhood walkability and physical activity among older women: Tests of mediation by environmental perceptions and moderation by depressive symptoms.

Features that enhance neighborhood walkability (higher population density, street connectivity and access to destinations) are associated with higher levels of physical activity among older adults. The perceived neighborhood environment appears to mediate associations between the objective built environment and physical activity. The role of depressed mood in these associations is poorly understood. We examined the degree to which depressive symptoms moderated indirect associations between the objective neighborhood environment and physical activity via the perceived neighborhood environment in older women. We analyzed data on 60,133 women (mean age = 73.1 ±â€¯6.7 years) in the U.S. Nurses' Health Study cohort who completed the 2008 questionnaire. Self-reported measures included the Geriatric Depression Scale, perceived presence of recreational facilities, retail destinations, sidewalks, and crime, and participation in recreational physical activity and neighborhood walking. We created an objective walkability index by summing z-scores of intersection and facility counts within 1200-meter residential network buffers and census tract-level population density. We used multiple regression with bootstrap-generated 95% bias-corrected confidence intervals (BC CIs) to test for mediation and moderated mediation. Objective walkability was associated with 1.99 times greater odds of neighborhood walking (95% BC CI = 1.92, 2.06) and 1.38 times greater odds of meeting physical activity recommendations (95% BC CI = 1.34, 1.43) via the perceived neighborhood environment. These indirect associations were weaker among women with higher depressive symptom scores. Positive associations between objective neighborhood walkability and physical activities such as walking among older women may be strengthened with a reduction in their depressive symptoms.

Accelerometer and GPS Analysis of Trail Use and Associations With Physical Activity.

BACKGROUND: Concurrent use of accelerometers and global positioning system (GPS) data can be used to quantify physical activity (PA) occurring on trails. This study examined associations of trail use with PA and sedentary behavior (SB) and quantified on trail PA using a combination of accelerometer and GPS data. METHODS: Adults (N = 142) wore accelerometer and GPS units for 1-4 days. Trail use was defined as a minimum of 2 consecutive minutes occurring on a trail, based on GPS data. We examined associations between trail use and PA and SB. On trail minutes of light-intensity, moderate-intensity, and vigorous-intensity PA, and SB were quantified in 2 ways, using accelerometer counts only and with a combination of GPS speed and accelerometer data. RESULTS: Trail use was positively associated with total PA, moderate-intensity PA, and light-intensity PA (P < .05). On trail vigorous-intensity PA minutes were 346% higher when classified with the combination versus accelerometer only. Light-intensity PA, moderate-intensity PA, and SB minutes were 15%, 91%, and 85% lower with the combination, respectively. CONCLUSIONS: Adult trail users accumulated more PA on trail use days than on nontrail use days, indicating the importance of these facilities for supporting regular PA. The combination of GPS and accelerometer data for quantifying on trail activity may be more accurate than accelerometer data alone and is useful for classifying intensity of activities such as bicycling.

A mixed-methods investigation of successful aging among older women engaged in sports-based versus exercise-based leisure time physical activities.

This mixed-methods study compares active older women in different physically based leisure activities and explores the difference in subjective ratings of successful aging and quantifiable predictors of success. A survey was administered to 256 women, 60-92 years of age, engaged in a sports- or exercise-based activity. Quantitative data were analyzed through ANOVA and multiple regression. Qualitative data (n = 79) was analyzed using the approach associated with means-end theory. While participants quantitatively appeared similar in terms of successful aging, qualitative interviews revealed differences in activity motivation. Women involved in sports highlighted social/psychological benefits, while those involved in exercise-based activities stressed fitness outcomes.

The observed and perceived neighborhood environment and physical activity among urban-dwelling adults: The moderating role of depressive symptoms.

RATIONALE: Physical environmental features of neighborhoods are associated with physical activity, but the influence of mental health factors, such as depression, on these associations is poorly understood. OBJECTIVE: We examined whether the perceived neighborhood environment mediated associations between the observed neighborhood environment and physical activity, and whether these associations were moderated by depressive symptoms. METHODS: Data consisted of systematic social observations of 343 neighborhoods and resident surveys. Participants' (N = 2969) mean age was 41.9 ± 16.2 years, 60.2% were female, and 67.9% were non-White. We conducted multiple linear regression and tests for mediation and moderated mediation. RESULTS: Observed recreation facilities, commercial destinations, physical disorder, and physical deterioration were indirectly associated with walking via perceived neighborhood environment variables. Observed recreation facilities was indirectly and positively associated with leisure-time physical activity via perceived park access, and indirectly and inversely associated with walking and leisure-time physical activity via perceived traffic danger, but only among participants with low depressive symptom scores. Observed recreation facilities was indirectly and inversely associated, and observed physical disorder and physical deterioration were indirectly and positively associated with walking via perceived disorder, but only among participants with high depressive symptom scores. CONCLUSION: Depressive symptoms affected the strength and direction of associations between the observed neighborhood environment and physical activity via residents' perceptions.

Correlates of Trail Use for Recreation and Transportation on 5 Massachusetts Trails.

BACKGROUND: Promoting use of community trails is a recommended strategy for increasing population levels of physical activity. Correlates of walking and cycling for recreation or transportation differ, though few studies have compared correlates of trail-based physical activity for recreation and transportation purposes. This study examined associations of demographic, social, and perceived built environmental factors with trail use for recreation and transportation and whether associations were moderated by age, gender, and prior trail use. METHODS: Adults (N = 1195) using 1 of 5 trails in Massachusetts responded to an intercept survey. We used multiple linear and logistic regression models to examine associations with trail use. RESULTS: Respondents' mean age was 44.9 years (standard deviation = 12.5), 55.3% were female, and 82.0% were white. Age (longer-term users only), trail use with others, travel time to the trail, and trail design were significantly associated with use for recreation (P < .05). Age, gender, trail safety (longer-term users only), travel time to the trail, trail design (younger users only), and trail beauty were associated with use for transportation (P < .05). CONCLUSIONS: Some common correlates were found for recreational and transportation trail use, whereas some variables were uniquely associated with use for 1 purpose. Tailored strategies are suggested to promote trail use for recreation and transportation.

Trails and physical activity: a review.

PURPOSE: To provide a synthesis of research on trails and physical activity from the public health, leisure sciences, urban planning, and transportation literatures. METHODS: A search of databases was conducted to identify studies published between 1980 and 2008. RESULTS: 52 studies were identified. The majority were cross-sectional (92%) and published after 1999 (77%). The evidence for the effects of trails on physical activity was mixed among 3 intervention and 5 correlational studies. Correlates of trail use were examined in 13 studies. Several demographic (eg, race, education, income) and environmental factors (eg, land-use mix and distance to trail) were related to trail use. Evidence from 31 descriptive studies identified several facilitators and barriers to trail use. Economic studies (n = 5) examining trails in terms of health or recreational outcomes found trails are cost-effective and produce significant economic benefits. CONCLUSION: There is a growing body of evidence demonstrating important factors that should be considered in promoting trail use, yet the evidence for positive effects of trails on physical activity is limited. Further research is needed to evaluate the effects of trails on physical activity. In addition, trail studies that include children and youth, older adults, and racial and ethnic minorities are a research priority.