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Full-Text Articles in Life Sciences
Effects Of Obesity On Thermoregulation And Cardiovascular Function During Exercise In Females, Jon David Adams
Effects Of Obesity On Thermoregulation And Cardiovascular Function During Exercise In Females, Jon David Adams
Graduate Theses and Dissertations
Previous research has shown that obese individuals are at greater risk for heat illnesses because of impaired thermoregulation. However, laboratory studies investigating cardiovascular and thermoregulatory function in obese individuals are difficult to interpret because of low sample sizes and methodological concerns. The purpose of this study was to determine if there are differences in thermoregulatory and cardiovascular function between obese and non-obese females. Twenty-four females, 13 obese (43.3 ± 4 .3 % fat, 77.2 ± 13.7 kg) and 11 non-obese (27.8 ± 6.0 % fat, 55.7±6.7 kg), cycled for 60 min in a warm environment (~40°C, 30% humidity) at a …
Effect Of Body Size And Exercise On Mood State, Alexandra Lachance
Effect Of Body Size And Exercise On Mood State, Alexandra Lachance
Graduate Theses and Dissertations
Exercising in the presence of nature (i.e., "green exercise"), has been shown to heighten the physiological and mental benefits of traditional exercise on non-obese individuals. The effects of green exercise on obese individuals are unknown. It is hypothesized that green exercise is more beneficial for obese (greater positive improvements in mental health scores), compared to non-obese individuals. For example, the benefits of green exercise could help lower feelings of depression, improve mood and self-esteem to increase the propensity of obese individuals to meet exercise recommendations. Accordingly, this study investigated the physiological and psychological effects of green exercise on 12 obese …
The Relationship Between Sleep Deprivation, Food Motivation, And Energy Intake In Normal-Weight And Obese Females, Lora Light Romney
The Relationship Between Sleep Deprivation, Food Motivation, And Energy Intake In Normal-Weight And Obese Females, Lora Light Romney
Theses and Dissertations
Objective: Sleep deprivation has been proposed as a potential correlate of obesity, particularly influencing energy intake. Therefore, the purpose of this study was to compare neural indices of attention related to food motivation and energy intake in normal-weight and obese women under two separate sleep conditions: 1) sleep-restricted (<5 hours) and 2) recommended sleep (~8 hours). This study used a combined cross-over and ex post facto design with condition order counter-balanced. Methods: Twenty-two normal-weight (age=30.9±9.5y, BMI=22.0±1.6 kg/m2) and 18 obese (age=29.7±10.7 y, BMI=36.4±5.3 kg/m2) women completed both sleep conditions. To confirm sleep levels, participants recorded sleep quality and quantity via sleep logs and wore a wrist actigraph. Following each condition, participants reported to the laboratory under the same fed state (energy shake ~10% of total daily needs) to verify they followed the sleep protocol. Subsequently, motivation for food was tested using electroencephalogram (EEG); participants completed a computerized passive-viewing task of food and flowers, while event-related brain potentials (ERPs) were recorded. After EEG testing, participants continued their normal routine but recorded all energy intake using weighed food scales. There were no instructions or limitations on dietary intake. Analyses included P300 and LPP amplitudes in response to picture type, total next day energy intake, and energy intake by several periods of the day. Results: Participants averaged 4.7±0.4 hours of sleep during the sleep-restricted condition and 7.7±0.3 hours during the recommended sleep condition (F=1057.02; P<0.0001). There was no group*condition interaction for next day food motivation (P300: F<2.896, P>0.09; LPP: F<2.967, P>0.093). Next day total energy intake also did not differ by group*condition (F=1.81; P=0.187). When participants were pooled, there was no difference in energy intake by sleep condition (F=0.00; P=0.953). However, when participants’ energy intake was analyzed during the lunch period (following testing to 1:30pm) there was a …
Kids Can Bike! A Parks And Recreation Program To Promote Youth Cycling, Jessica Lynn Chandler
Kids Can Bike! A Parks And Recreation Program To Promote Youth Cycling, Jessica Lynn Chandler
Masters Theses
Physical inactivity is a major concern, and is believed to contribute to the high prevalence of childhood obesity in U.S. schoolchildren. To address this problem, the Knoxville Area Coalition on Childhood Obesity launched a ‘Kids Can BIKE!’ program in 2012. The bicycling program is seven weeks long and is designed to increase physical activity, teach safe cycling skills, and explore Knoxville parks and greenways while having fun. The program targeted children in grades 4 and 5 who were already enrolled in an afterschool or summer program. Once a week, the children were transported to a location where they could safely …