Matching Items (10)
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- Creators: Department of Psychology
- Creators: Holzapfel, Simon
- Member of: Barrett, The Honors College Thesis/Creative Project Collection
- Resource Type: Text
Description
With obesity and metabolic diseases reaching epidemic levels, it is important to find ways to increase physical activity and improve diet. Previous studies have shown that improvements in mood can increase desire to perform physical activity, and that vitamin C intake is linked to improvements in mood. Based on this, two hypotheses were formed and tested to investigate the effect on physical activity levels and mood states from vitamin C supplementation at a dose of one gram per day in the form of a novel functional food. Thirty-one college students or faculty at Arizona State University were screened from a pool of applicants and placed into either a vitamin C or placebo group; all participants received the novel functional food to eat daily for four weeks. Serum levels of vitamin C, weight, height, BMI, body fat percentage, mood, and physical activity were measured before and after the functional food intervention. Vitamin C changed significantly through the course of the study in the experimental group. Baseline data for participants showed a positive correlation between vitamin C status and vigor, and a negative correlation between vitamin C status and weight and BMI. Physical activity was not related to vitamin C status, according to baseline data, and it did not significantly change over the course of the study. The results indicate that variance in BMI can be attributed to vitamin C status, but the study should be refined and tested again.
ContributorsHelland, Stephanie Lynn (Author) / Johnston, Carol (Thesis director) / Sweazea, Karen (Committee member) / Barrett, The Honors College (Contributor) / Department of Chemistry and Biochemistry (Contributor) / Department of Psychology (Contributor) / School of Life Sciences (Contributor) / Graduate College (Contributor)
Created2014-05
Description
Individuals with Down Syndrome (DS) are subject to a spectrum of behavioral, cognitive and physical impairments. This population is more predisposed to comorbidity and typically has an increased risk of inactivity resulting in a lower level of fitness. Previous studies on physical activity have shown that routine exercise has similar health benefits for those with DS as those individuals without a disability and in turn progresses their balance ability. Due to limited exercise program opportunities and studies that intentionally investigate the benefits of specific modes of exercise on the DS population, a community-based Exercise Program for Adults with DS (ExDS) was created with the goal of improving their physical and mental health and measuring changes in their balance capabilities throughout the program. ExDS partnered with Arizona State University (ASU) students to create biweekly customized workouts, that followed exercise prescription guidelines, consisting of an aerobic warm-up, main aerobic exercise bout, resistance training, balance training, and stretching for each participant with DS. Participant dynamic and static balance ability was measured using the Berg Balance Scale (BBS) during program pre- and post-assessments. The BBS composite score did not change and no significant improvement was seen in the p-values for each line item of the BBS from pre- to post-testing. For follow-up analyses, the participants with low treatment fidelity were removed. Follow-up analyses showed significant increases in BBS composite score and line item 13 from pre- to post-testing. Treatment fidelity was a limitation in this study and future studies should aim to increase fidelity and consistency of tester for pre- and post-testing. In conclusion, holistic exercise programming for adults with DS appears to benefit balance as long as treatment fidelity is high. It is unclear which mode of exercise had the greatest impact on changes in balance.
ContributorsShikles, Ann Kelly (Author) / Holzapfel, Simon (Thesis director) / Ringenbach, Shannon (Committee member) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2018-12
Description
Background and Purpose— There is limited conclusive data on both pharmacological and holistic treatment options to improve cognition in adults after stroke. In particular, there is lacking evidence for cognitive rehabilitation in the subacute and chronic phases when cognitive impairment may be more perceptible. In this meta-analytic review, our primary objective was to determine the cognitive effects of aerobic exercise on post-stroke adults in the post-acute phases. Secondary objectives were to investigate the differential effects of aerobic exercise on sub-domains of cognitive function.
Methods— Data were extracted and filtered from electronic databases PubMed (MEDLINE), CINAHL, Embase, PsycINFO, and Scopus. Intervention effects were represented by Hedges’ g and combined into pooled effect sizes using random effects models. Heterogeneity was evaluated using the Chi-squared (Q) and I-squared statistics.
Results— Five studies met inclusion criteria, representing data from 182 participants. The primary analysis produced a positive overall effect of aerobic exercise on cognitive performance (Hedges’ g [95% confidence interval]= 0.42 [0.007–0.77]). Effects were significantly different from zero for aerobic interventions combined with other physical activity interventions (Hedges’ g [CI] =0.59 [0.26 to 0.92]), but not for aerobic interventions alone (P= 0.40). In specific subdomains, positive moderate effects were found for global cognitive function (Hedges’ g [CI] =0.79 [0.31 to 1.26]) but not for attention and processing speed (P=0.08), executive function (P= 0.84), and working memory (P=0.92).
Conclusions— We determined that aerobic exercise combined with other modes of training produced a significant positive effect on cognition in adults after stroke in the subacute and chronic phases. Our analysis supports the use of combined training as a treatment option to enhance long-term cognitive function in adults after stroke. Further research is needed to determine the efficacy of aerobic training alone.
Methods— Data were extracted and filtered from electronic databases PubMed (MEDLINE), CINAHL, Embase, PsycINFO, and Scopus. Intervention effects were represented by Hedges’ g and combined into pooled effect sizes using random effects models. Heterogeneity was evaluated using the Chi-squared (Q) and I-squared statistics.
Results— Five studies met inclusion criteria, representing data from 182 participants. The primary analysis produced a positive overall effect of aerobic exercise on cognitive performance (Hedges’ g [95% confidence interval]= 0.42 [0.007–0.77]). Effects were significantly different from zero for aerobic interventions combined with other physical activity interventions (Hedges’ g [CI] =0.59 [0.26 to 0.92]), but not for aerobic interventions alone (P= 0.40). In specific subdomains, positive moderate effects were found for global cognitive function (Hedges’ g [CI] =0.79 [0.31 to 1.26]) but not for attention and processing speed (P=0.08), executive function (P= 0.84), and working memory (P=0.92).
Conclusions— We determined that aerobic exercise combined with other modes of training produced a significant positive effect on cognition in adults after stroke in the subacute and chronic phases. Our analysis supports the use of combined training as a treatment option to enhance long-term cognitive function in adults after stroke. Further research is needed to determine the efficacy of aerobic training alone.
ContributorsMitchell, Michaela (Author) / Holzapfel, Simon (Thesis director) / Bosch, Pamela (Committee member) / College of Health Solutions (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05
Description
The purpose of this study, originally, was to contribute to the completion of a meta-analysis conducted by Mara Wierstra from the University of Virginia. Wierstra had requested individual participant data from two separate studies conducted in our lab: "Acute bouts of assisted cycling improves cognitive and upper extremity movement functions in adolescents with Down syndrome" and "Assisted Cycling Therapy (ACT) improves inhibition in adolescents with autism spectrum disorder." From the data requested, the participants were required to complete three separate tests (i.e., Tower of London, Trail Making Task and the Stroop Test). After compiling the data and sending it to her, we decided to conduct a small meta-analysis of our own, drawing connecting conclusions from the data from the two studies. We concluded that observationally our data suggest an advantage for ACT over voluntary cycling and no cycling across two separate populations (i.e., Autism Spectrum Disorder and Down syndrome), and across different measures of executive function (i.e., Stroop Test, Trail Making Test, and Tower of London). The data suggest that the ACT interventions may promote the upregulation of neurotropic factors leading to neurogenesis in the prefrontal cortex of the brain.
ContributorsParker, Cade Joseph (Author) / Ringenbach, Shannon (Thesis director) / Holzapfel, Simon (Committee member) / School of Nutrition and Health Promotion (Contributor) / Barrett, The Honors College (Contributor)
Created2016-12
Description
Previous research has found improvements in motor and cognitive measures following Assisted Cycle Therapy (AC) in adolescence with Down syndrome (DS). Our study investigated whether we would find improvements in older adults with DS on measures of leisure physical activity (GLTEQ) and sleep, which are early indicators of Alzheimer's disease (AD) in persons with Down syndrome. This study consisted of eight participants with Down syndrome between 31 and 51 years old that cycled for 30 minutes 3 x/week for eight weeks either at their voluntary cycling rate (VC) or approximately 35% faster with the help of a mechanical motor (AC). We predicted that, based on pilot data (Gomez, 2015), GLTEQ would either maintain or improve after AC, but would decrease after VC and would stay the same after NC. We predicted that the sleep score may improve after both VC or AC or it may improve more after VC than AC based on pilot data related to leisure activity. Our results were consistent with our prediction that GLTEQ will either maintain or improve after AC but will decrease after VC. Our results were not consistent with our prediction that sleep may improve after both VC or AC or it may improve more after VC than AC, possibly because we did not pre-screen for sleep disorders. Future research should focus on recruiting more participants and using both objective and subjective measures of sleep and physical activity to improve the efficacy of the study.
ContributorsParker, Lucas Maury (Author) / Ringenbach, Shannon (Thesis director) / Buman, Matthew (Committee member) / Holzapfel, Simon (Committee member) / School of Social and Behavioral Sciences (Contributor) / School of Nutrition and Health Promotion (Contributor) / College of Public Service and Community Solutions (Contributor) / Barrett, The Honors College (Contributor)
Created2016-05
Description
Attention-deficit hyperactivity disorder (ADHD) is a developmental disorder categorized by symptoms of inattention, impulsivity, and/or hyperactivity. The onset of ADHD symptoms begin to appear in childhood, tend to be persistent into adulthood, and are associated with adverse physical and mental health outcomes (Caye et al., 2016; Yoshimasu et al., 2018). The current study examined the effects of health-promoting behavior (i.e., diet and physical activity) on ADHD symptoms in middle childhood. The sample consisted of 670 twins (30.1% monozygotic, 36.5% same-sex dizygotic, 32.3% opposite-sex dizygotic) from the ongoing longitudinal study, the Arizona Twin Project. The twin’s (51% female) diet, physical activity, and ADHD symptoms were assessed at age 8 (M = 8.45, SD = 0.69) and ADHD symptoms were assessed again at age 9 (M = 9.70, SD = 0.92). Mixed model regression analyses revealed that aspects of diet (i.e., protein, carbohydrates, and fiber) at age 8 negatively predicted ADHD symptoms at age 9. Similarly, sedentary behavior at age 8 negatively predicted ADHD symptoms at age 9, whereas moderate-to-vigorous activity at age 8 positively predicted ADHD symptoms at age 9. Univariate twin analyses revealed that certain aspects of diet (i.e., sugar, vegetable, and fruit consumption) were influenced by environmental factors whereas other aspects of diet (i.e., protein, carbohydrates, calories, fat, and fiber consumption) were influenced by both genetic and environmental factors. Both children’s sedentary behavior and moderate-to-vigorous activity were influenced primarily by genetic factors, with the remaining variance being attributed to non-shared environmental factors. Additive genetic influences explained the majority of the variance in ADHD symptoms. Future research should examine bidirectional effects of activity and diet on ADHD symptoms across childhood.
ContributorsJurek, Emily (Author) / Lemery-Chalfant, Kathryn (Thesis director) / Rea-Sandin, Gianna (Committee member) / Barrett, The Honors College (Contributor) / Sanford School of Social and Family Dynamics (Contributor) / Department of Psychology (Contributor)
Created2021-12
Description
This research evaluates the need for health providers to prioritize their personal health as a means to improve their patient care. Due to the traditional healthcare system maintaining a patient-centric focus, physicians became victims to the very diseases they were treating their patents for. The sacrifice of one's own health caused physicians to be more susceptible to both institutional and perceptual barriers that limited their engagement in preventative care counseling. Their own personal lifestyle habits, such as physical activity, played an influential role when prescribing treatment plans, and thus, could serve as a compromising factor in substandard care of a patient. The research suggested that providers who sustained healthier lifestyles by practicing what they preach are more efficient at delivering quality care to their patients in comparison to providers living an unhealthy lifestyle. With a provider's responsibility and obligation to continuously provide optimal care, there is a need to promote the health of a provider to establish both reliable and standardize patient care within the healthcare system. In addition to the research, three personal testimonials are included to help demonstrate the potential effects of a physician’s personal health in their medical practice.
ContributorsSiragusa, Tiana Rae (Author) / Lussier, Mark (Thesis director) / Compton, Carolyn (Committee member) / Department of Psychology (Contributor) / School of Life Sciences (Contributor) / Barrett, The Honors College (Contributor)
Created2020-05
Description
Physical activity has been shown to have a multitude of physical health benefits, including reduction of risk of certain illnesses and an overall improvement in physical and cognitive functioning. Current intervention techniques work to improve physical activity habits in participants through education about these long-term health benefits. However, most individuals living in the United States are not currently reaching ideal amounts of physical activity, suggesting that these interventions have not been entirely effective. Might an intervention that fosters intrinsic motivation via exercise enjoyment be more effective? The current study sought to compare a long-term health benefit-focused intervention to an alternative that focuses on immediate enjoyment of exercise. Participants were randomly assigned to one of these two intervention conditions. Participants reported their time spent doing physical activity and level of enjoyment of physical activity pre- and post-intervention. We found no significant differences between conditions. Frequency and enjoyment of physical activity increased post-intervention, regardless of condition. Future research should be done to correct the limitations of this study and gain a more accurate view into which factors are most important in exercise motivation.
ContributorsSmith, Tanner (Author) / Shiota, Michelle (Thesis director) / Kwan, Sau (Committee member) / Vornlocher, Carley (Committee member) / Barrett, The Honors College (Contributor) / College of Integrative Sciences and Arts (Contributor) / Department of Psychology (Contributor)
Created2022-05
Description
Adverse neighborhood environments have been found to negatively influence children’s sleep and physical activity outcomes (Pabayo et al., 2014; Aguilar-Farias et al., 2020). Previous literature suggests that positive parenting and familism values may play protective roles in high-risk neighborhood contexts (Romero et al., 2020). This study utilized a strengths-based approach to examine relations between neighborhood opportunities and sleep and physical activity in children, and whether positive parenting and familism values buffered these associations. This study utilized a racially and socioeconomically diverse sample of 710 twin children (Mage=8.44 years, SD=.69; 51.4% female; 58.5% non-Hispanic White, 23.7% Hispanic). Children wore actigraphy watches for 7 nights (M=6.79, SD=.71) to capture sleep (duration, efficiency, midpoint, midpoint variability) and physical activity (MVPA and sedentary behaviors) parameters. Objective neighborhood opportunity was evaluated using the Child Opportunity Index 2.0 (COI; Noelke et al., 2020). Positive parenting behaviors were observed and coded in the context of a parent-child interaction task. Primary caregivers reported on their children’s sleep problems and their familism values. Results revealed that higher COI predicted earlier sleep midpoint and less midpoint variability. Interactions between COI and positive parenting were nonsignificant. Though marginal, associations between the COI and midpoint variability were most negatively related in children whose primary caregiver reported high familism values. Future research should look at children’s engagement in family activities to better understand whether children who reside in low opportunity neighborhoods and experience high familism values have to face additional competing family demands, leading to greater individual variation in sleep timing.
ContributorsGutierrez, Valeria (Author) / Doane, Leah (Thesis director) / Lemery-Chalfant, Kathryn (Committee member) / Cruz, Rick (Committee member) / Barrett, The Honors College (Contributor) / Department of Psychology (Contributor) / School of Criminology and Criminal Justice (Contributor)
Created2022-12
Description
A brief history of the Mediterranean diet and its geographical origins as a meeting point for cultures will guide understanding of the construction of this specific dietary pattern. The nutrients and foods typical of the Mediterranean diet will be outlined as well as their health benefits, allowing for a deeper analysis of the ways in which the Mediterranean diet is associated with reducing the risk of certain chronic diseases. The lifestyle choices and physical activity practiced adjacently to the diet will establish the positive synergistic effects of conviviality and moderate exercise on general human health. Contemporary movements in the Mediterranean region, like Slow Foods, aim to preserve traditional dietary and lifestyle choices. In comparison, the U.S. food system seems to be most shaped by the influences of globalization and industrialization. Economic and health-cost perspectives as well as the role of modern-day media in diet trends, body image, and food marketing will establish and deepen the complexities of food choices and health disparities in Western societies. The diagnosis of the Mediterranean Diet in the U.S. as a solution to poor general population health will be challenged and holistic perspectives on eating will provide an exploratory lens for understanding health and food choice as a modern-day consumer.
ContributorsMeyer, Terra (Author) / Levinson, Simin (Thesis director) / Vitullo, Juliann (Committee member) / Barrett, The Honors College (Contributor) / Department of Management and Entrepreneurship (Contributor) / Department of Psychology (Contributor)
Created2023-05