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- Creators: Arizona State University
Description
It has been identified in the literature that there exists a link between the built environment and non-motorized transport. This study aims to contribute to existing literature on the effects of the built environment on cycling, examining the case of the whole State of California. Physical built environment features are classified into six groups as: 1) local density, 2) diversity of land use, 3) road connectivity, 4) bike route length, 5) green space, 6) job accessibility. Cycling trips in one week for all children, school children, adults and employed-adults are investigated separately. The regression analysis shows that cycling trips is significantly associated with some features of built environment when many socio-demographic factors are taken into account. Street intersections, bike route length tend to increase the use of bicycle. These effects are well-aligned with literature. Moreover, both local and regional job accessibility variables are statistically significant in two adults' models. However, residential density always has a significant negatively effect on cycling trips, which is still need further research to confirm. Also, there is a gap in literature on how green space affects cycling, but the results of this study is still too unclear to make it up. By elasticity analysis, this study concludes that street intersections is the most powerful predictor on cycling trips. From another perspective, the effects of built environment on cycling at workplace (or school) are distinguished from at home. This study implies that a wide range of measures are available for planners to control vehicle travel by improving cycling-level in California.
ContributorsWang, Kailai, M.U.E.P (Author) / Salon, Deborah (Thesis advisor) / Rey, Sergio (Committee member) / Li, Wenwen (Committee member) / Arizona State University (Publisher)
Created2015
Description
Introduction: Weight cycling is defined as happening when an individual intentionally loses weight and then subsequently regaining the weight over time. Weight cycling has been associated with a number of adverse health consequences and is a risk factor for cardiovascular disease. The large majority of behaviorally based weight loss interventions typically result in full weight regain often with additional weight gained over time with each repeated bout of weight cycling. Mindful eating, which is defined as a non-judgmental awareness of meal related factors, has been found to influence negative behaviors related to weight cycling. Purpose: The purpose of this study was to examine the association between mindful eating and weight cycling in middle aged women.
Methods: This study used an observational design to explore the relationships and characterize responses to the Mindfulness Eating Questionnaire (MEQ) in 75 overweight women (BMI > 25) who self-reported a history of weight cycling using a weight cycling index (WCI). The participants were divided into three groups: non-cyclers (NC) less than three cycles of 10 lbs; moderate cyclers (MC) at least three weight cycles of 10lbs; and severe cyclers (SC) at least three weight cycles of at least 20lbs. Results: NC were significantly (p < 0.05) younger and had lower BMI than the MC and SC groups. There were no significant differences in any of the MEQ subscores based on WCI groups. There were no significant relationships between WCI and any of the MEQ subscores. Conclusion: The Mindful Eating Questionnaire (MEQ), was an insufficient discriminatory measure for use in an observational study on a complex behavior such as weight cycling. Further research to understand eating behavior domains, mindful awareness skills, and risk of weight cycling is needed.
Methods: This study used an observational design to explore the relationships and characterize responses to the Mindfulness Eating Questionnaire (MEQ) in 75 overweight women (BMI > 25) who self-reported a history of weight cycling using a weight cycling index (WCI). The participants were divided into three groups: non-cyclers (NC) less than three cycles of 10 lbs; moderate cyclers (MC) at least three weight cycles of 10lbs; and severe cyclers (SC) at least three weight cycles of at least 20lbs. Results: NC were significantly (p < 0.05) younger and had lower BMI than the MC and SC groups. There were no significant differences in any of the MEQ subscores based on WCI groups. There were no significant relationships between WCI and any of the MEQ subscores. Conclusion: The Mindful Eating Questionnaire (MEQ), was an insufficient discriminatory measure for use in an observational study on a complex behavior such as weight cycling. Further research to understand eating behavior domains, mindful awareness skills, and risk of weight cycling is needed.
ContributorsSmith, Jared McDonald (Author) / Swan, Pamela (Thesis advisor) / Sebren, Ann (Committee member) / Chisum, Jack (Committee member) / Arizona State University (Publisher)
Created2016
Description
Background: Stroke is a leading cause of long-term disability in the United States (US). Assisted Cycling Therapy (ACT) incorporates the use of an electric motor to enhance the rotations per minute (rpm). ACT of about 80 rpm, has been associated with improvements in motor, cognitive, and clinical function. The acute effects of ACT on motor and cognitive function of persons with stroke induced deficits have not been investigated.
Purpose: To compare the acute effects of ACT, voluntary cycling (VC), and no cycling (NC) on upper and lower extremity motor function and executive function in adults with chronic stroke (age: 60 ± 16 years; months since stroke: 96 ± 85).
Methods: Twenty-two participants (gender: female = 6, male = 16; types: ischemic = 12, hemorrhagic = 10; sides: left lesion = 15, right lesion = 7) completed one session of ACT, one session of VC and one session of NC on separate days using a 3 x 3 crossover design.
Results: ACT lead to greater improvements in lower and upper extremity function on the paretic and non-paretic side than VC or NC (all p < 0.05), except in the non-paretic lower extremity where ACT and VC produced similar improvement (both p < 0.05). ACT and VC, but not NC, were associated with improvements in inhibition (p < 0.05). A positive relationship between cadence and motor function (P < 0.05) was found. Ratings of perceived exertion shared an inverted-U shaped relationship with measures of processing speed (p < 0.05) and a negative linear relationship with measures of executive function (p < 0.05).
Conclusion: ACT appears to benefit paretic and non-paretic motor function globally whereas the benefits of VC are more task specific. Faster cycling cadence was associated with greater improvements in global motor function. ACT and VC seem to carry similar acute benefits in inhibition.
Purpose: To compare the acute effects of ACT, voluntary cycling (VC), and no cycling (NC) on upper and lower extremity motor function and executive function in adults with chronic stroke (age: 60 ± 16 years; months since stroke: 96 ± 85).
Methods: Twenty-two participants (gender: female = 6, male = 16; types: ischemic = 12, hemorrhagic = 10; sides: left lesion = 15, right lesion = 7) completed one session of ACT, one session of VC and one session of NC on separate days using a 3 x 3 crossover design.
Results: ACT lead to greater improvements in lower and upper extremity function on the paretic and non-paretic side than VC or NC (all p < 0.05), except in the non-paretic lower extremity where ACT and VC produced similar improvement (both p < 0.05). ACT and VC, but not NC, were associated with improvements in inhibition (p < 0.05). A positive relationship between cadence and motor function (P < 0.05) was found. Ratings of perceived exertion shared an inverted-U shaped relationship with measures of processing speed (p < 0.05) and a negative linear relationship with measures of executive function (p < 0.05).
Conclusion: ACT appears to benefit paretic and non-paretic motor function globally whereas the benefits of VC are more task specific. Faster cycling cadence was associated with greater improvements in global motor function. ACT and VC seem to carry similar acute benefits in inhibition.
ContributorsHolzapfel, Simon D (Author) / Ringenbach, Shannon D (Thesis advisor) / Bosch, Pamela R (Committee member) / Lee, Chong D (Committee member) / Der Ananian, Cheryl A (Committee member) / Hooker, Steven P (Committee member) / Arizona State University (Publisher)
Created2017
Description
The city of Groningen in the Netherlands is often referred to as the "world cycling city" because over fifty percent of trips are made on bicycles (Van Hoven & Elzinga, 2009). On the contrary, just four percent of trips in Tempe, Arizona are on bicycles (McKenzie, 2014). Through a series of interviews and surveys, this study investigates what causes such high bicycling rates in Groningen and applies these findings to Tempe. The results suggest that Groningen experiences high bicycling rates because the city uses "carrot" and "stick" policies to encourage bicycling and discourage driving. It is therefore recommended that Tempe adopt both types of policies to raise bicycling levels.
ContributorsRayes, Kevin (Author) / Pfeiffer, Deirdre (Thesis advisor) / Larson, Elizabeth (Committee member) / Golub, Aaron (Committee member) / Arizona State University (Publisher)
Created2015