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MinKyoung Song, Dianna D. Carroll, Sarah M. Lee and Janet E. Fulton

Background:

The 2008 Physical Activity Guidelines recommend youth participate in a variety of physical activities; however, few nationally representative studies describe the types and variety of youth activity. This study assessed the most frequently reported types and variety of activities among U.S. high school students, and examined the association between variety and meeting the 2008 Guidelines for aerobic activity (aerobic guideline).

Methods:

We analyzed data on 8628 U.S. high school students in grades 9–12 from the 2010 National Youth Physical Activity and Nutrition Survey. Types of physical activity were assessed by identifying which activities each student reported in the past 7 days. Variety was assessed by the total number of different activities each student reported. Percentage (95% CI) of students who reported engaging in each activity was assessed. Logistic regression was used to examine the association between variety and meeting the aerobic guideline.

Results:

Walking was the most frequently reported activity among U.S. high school students. On average, students reported participating in 6 different activities. Variety was positively associated with meeting the aerobic guideline.

Conclusions:

These findings support encouraging youth to participate in many physical activities and may be useful for developing interventions that focus on the most prevalent activities.

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Michelle C. Kegler, Iris Alcantara, Regine Haardörfer, Alexandra Gemma, Denise Ballard and Julie Gazmararian

Background:

Physical activity levels, including walking, are lower in the southern U.S., particularly in rural areas. This study investigated the concept of rural neighborhood walkability to aid in developing tools for assessing walkability and to identify intervention targets in rural communities.

Methods:

Semi-structured interviews were conducted with physically active adults (n = 29) in rural Georgia. Mean age of participants was 55.9 years; 66% were male, 76% were white, and 24% were African American. Participants drew maps of their neighborhoods and discussed the relevance of typical domains of walkability to their decisions to exercise. Comparative analyses were conducted to identify major themes.

Results:

The majority felt the concept of neighborhood was applicable and viewed their neighborhood as small geographically (less than 0.5 square miles). Sidewalks were not viewed as essential for neighborhood-based physical activity and typical destinations for walking were largely absent. Destinations within walking distance included neighbors’ homes and bodies of water. Views were mixed on whether shade, safety, dogs, and aesthetics affected decisions to exercise in their neighborhoods.

Conclusions:

Measures of neighborhood walkability in rural areas should acknowledge the small size of self-defined neighborhoods, that walking in rural areas is likely for leisure time exercise, and that some domains may not be relevant.

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Courtney Coughenour and Timothy J. Bungum

Background:

Neighborhood walkability is being promoted as an important factor in public health efforts to decrease rates of physical inactivity. Single entry communities (SEC), communities with only 1 entrance/exit, may result in an over estimation of walkability. This design makes direct walking routes outside the community nearly impossible and results in increased trip distance. The purpose of this study was to determine if accounting for SECs resulted in a significant difference in street connectivity.

Methods:

Twenty geographically different Las Vegas neighborhoods were chosen and the number of true intersections measured in ArcGIS. Neighborhoods were then assessed for the presence of SECs using google maps, ArcGIS land imagery, and field observation. Intersections inside SECs were removed. A paired t test was used to assess the mean difference of intersection density before and after adjustment.

Results:

There was a statistically significant decrease in the number of true intersections after the adjustment (before mean = 57.8; after mean = 45.7). The eta squared statistic indicates a large effect size (0.3).

Conclusions:

Single entry communities result in an over estimation of street connectivity. If SECs are not accounted for, trip distances will be underestimated and public health efforts to promote walking through walkable neighborhoods may prove less effective.

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Kathleen B. Watson, Ginny M. Frederick, Carmen D. Harris, Susan A. Carlson and Janet E. Fulton

Background:

There is little information on national estimates for participation in types of aerobic activities among U.S. adults. Current estimates are important to develop appropriate and effective interventions to promote physical activity and interpret bias for some activities measured with devices.

Methods:

The percentage of adults participating in specific aerobic activities was estimated overall and by demographic subgroups. The 2011 Behavioral Risk Factor Surveillance System respondents (N = 446,216) reported up to 2 aerobic activities they spent the most time doing during the past month.

Results:

Overall, walking (47%) was the most common activity reported and was reported more by women (54%) than men (41%). Participation in most activities declined with increasing age (P < .006). There were a number of differences in participation between race/ethnic subgroups. Participation increased with more education (P for trend < 0.006) for all activities. Participation in most activities was different (P < .002) across BMI subgroups.

Conclusions:

Walking is the most common activity, overall and among most subgroups. Other activity profiles differ by demographic subgroup. Physical activity promotion strategies that focus on identifying and addressing personal and environmental barriers and understanding demographic subgroup differences could lead to more tailored interventions and public health programs.

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Prabasaj Paul, Susan A. Carlson, Dianna D. Carroll, David Berrigan and Janet E. Fulton

Background:

Walking, the most commonly reported physical activity among U.S. adults, is undertaken in various domains, including transportation and leisure.

Methods:

This study examined prevalence, bout length, and mean amount of walking in the last week for transportation and leisure, by selected characteristics. Self-reported data from the 2010 National Health Interview Survey (N = 24,017) were analyzed.

Results:

Prevalence of transportation walking was 29.4% (95% CI: 28.6%–30.3%) and of leisure walking was 50.0% (95% CI: 49.1%–51.0%). Prevalence of transportation walking was higher among men; prevalence of leisure walking was higher among women. Most (52.4%) transportation walking bouts were 10 to 15 minutes; leisure walking bouts were distributed more evenly (28.0%, 10–15 minutes; 17.1%, 41–60 minutes). Mean time spent in transportation walking was higher among men, decreased with increasing BMI, and varied by race/ethnicity and region of residence. Mean time spent leisure walking increased with increasing age and with decreasing BMI.

Conclusion:

Demographic correlates and patterns of walking differ by domain. Interventions focusing on either leisure or transportation walking should consider correlates for the specific walking domain. Assessing prevalence, bout length, and mean time of walking for transportation and leisure separately allows for more comprehensive surveillance of walking.

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Kathleen B. Watson, Susan A. Carlson, Tiffany Humbert-Rico, Dianna D. Carroll and Janet E. Fulton

Background:

Less than one-third of U.S. adults walk for transportation. Public health strategies to increase transportation walking would benefit from knowing what adults think is a reasonable distance to walk. Our purpose was to determine 1) what adults think is a reasonable distance and amount of time to walk and 2) whether there were differences in minutes spent transportation walking by what adults think is reasonable.

Methods:

Analyses used a cross-sectional nationwide adult sample (n = 3653) participating in the 2010 Summer ConsumerStyles mail survey.

Results:

Most adults (> 90%) think transportation walking is reasonable. However, less than half (43%) think walking a mile or more or for 20 minutes or more is reasonable. What adults think is reasonable is similar across most demographic subgroups, except for older adults (≥ 65 years) who think shorter distances and times are reasonable. Trend analysis that adjust for demographic characteristics indicates adults who think longer distances and times are reasonable walk more.

Conclusions:

Walking for short distances is acceptable to most U.S. adults. Public health programs designed to encourage longer distance trips may wish to improve supports for transportation walking to make walking longer distances seem easier and more acceptable to most U.S. adults.

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Cheryl Kelly, Min Lian, Jim Struthers and Anna Kammrath

Background:

There are few studies that aimed to find a relationship between transportation-related physical activity and neighborhood socioeconomic condition using a composite deprivation index. The purpose of this study is to assess the relationship of neighborhood walkability and socioeconomic deprivation with percentage of adults walking to work.

Methods:

A walkability index and a socioeconomic deprivation index were created at block group-level. The outcome variable, percentage of adults who walk to work was dichotomized as < 5% of the block group walking to work low and ≥ 5% of the block group walking to work as high and applied logistic regression to examine the association of walkability and socioeconomic deprivation with walking to work.

Results:

Individuals in the most walkable neighborhoods are almost 5 times more likely to walk to work than individuals in the least walkable neighborhoods (OR = 4.90, 95% CI = 2.80–8.59). After adjusting for neighborhood socioeconomic deprivation, individuals in the most walkable neighborhoods are almost 3 times more likely to walk to work than individuals in the least walkable neighborhoods (OR = 2.98, 95% CI = 1.62–5.49).

Conclusions:

Walkability (as measured by the walkability index) is a very strong indicator of walking to work even after controlling for neighborhood socioeconomic disadvantage.

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Lorna H. McNeill, Karolina Murguia, Nga Nguyen and Wendell C. Taylor

Background:

Walking trails are positively associated with physical activity; however, few studies have been conducted among diverse communities. We sought to describe trail use and the physical and social environmental correlates of trail use in a racially/ethnically diverse sample.

Methods:

We administered an on-site trail intercept survey to walkers on a trail (N = 175). We assessed frequency/duration of trail use, reasons for using the trail, perceptions of the trail, demographics and BMI.

Results:

Walkers were primarily young (mean age = 37.8 years, SD = 11.8) and overweight (mean BMI = 25.2 kg/m2, SD = 4.2). Time spent on the trail and frequency of trail use differed significantly by age (P = .004) but not race/ethnicity. Perceptions of the trail differed significantly by sex and race/ethnicity (P-values = .001, .014, respectively). In regression models, different factors predicted time spent on the trail and frequency of trail use.

Conclusions:

Walkers were frequent users of the trail and cited many favorable features of the trail that encouraged their use. Duration and frequency of trail use did not differ by race/ethnicity or sex, thereby indicating that when provided with safe access, racial/ethnic minorities and women may be likely to use trails at rates similar to those of Whites and men.

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Zachary S. Zeigler, Pamela D. Swan, Dharini M. Bhammar and Glenn A. Gaesser

Background:

The acute effect of low-intensity walking on blood pressure (BP) is unclear.

Purpose:

To determine if the acute use of a walking workstation reduces ambulatory blood pressure (ABP) in prehypertensive men and women.

Methods:

Ten prehypertensive adults participated in a randomized, cross-over study that included a control workday and a walking workstation workday. ABP was measured for 7 hour during the workday and for 6 hour after work.

Results:

Both systolic BP (SBP) (134 ± 14 vs. 137 ± 16 mmHg; P = .027) and diastolic BP (DBP) (79 ± 10 vs. 82 ± 12 mmHg; P = .001) were lower on the walking workstation day. Postwork hours (4:00 PM–10:00 PM), SBP (129 ± 13 vs. 133 ± 14 mmHg; P = .008), and DBP (74 ± 11 vs. 78 ± 13 mmHg; P = .001) were also lower on the walking workstation day. DBP load was significantly lower during the walking workstation day, with only 14% of the readings above 90 mmHg compared with 22% of the control day readings (P = .037).

Conclusion:

Accumulation of very-light-intensity physical activity (~2 METs) over the course of a single work day using a walking workstation may reduce BP burden in prehypertensive individuals.