After the honeymoon: The Obama effect on political attitudes and participation

My dissertation takes a mixed-methods approach to investigating the possibility of a lasting Obama Effect on the political attitudes and behaviors of Obama supporters from 2008. Defining the Obama Effect as the extraordinary enthusiasm surrounding Barack Obama’s 2008 campaign, I argue that a short term Obama Effect was clearly present in 2008 based on Obama’s electoral success, fundraising prowess, and ability to inspire volunteerism, as well as on the historic nature of his candidacy. But I ask, was it a lasting effect? My quantitative analyses—built upon panel survey data from the American National Election Studies—suggest little evidence of a lasting campaign effect that was positive and/or unique to Obama supporters. With regard to attitudes and behaviors such as political interest, political efficacy, or attendance of political events, Obama supporters often showed relative declines or stagnation over time when compared to nonsupporters or supporters of previous presidents. My qualitative analysis—based upon interviews with 30 former volunteers from the 2008 Obama campaign—does, however, indicated that the Obama Effect had a deep and lasting impact on his most enthusiastic support base, those who volunteered for his campaign. Many former Obama volunteers remained highly interested, civically engaged, and continually inspired as a result of their activism for the 2008 Obama campaign. In sum, I conclude that while that campaign may not have had its desired transformational effect on the broader American electorate, it did produce a positive and indeed a lasting impact on its most enthusiastic supporters

Lower limb strength training in children with cerebral palsy – a randomized controlled trial protocol for functional strength training based on progressive resistance exercise principles

<p>Abstract</p> <p>Background</p> <p>Until recently, strength training in children with cerebral palsy (CP) was considered to be inappropriate, because it could lead to increased spasticity or abnormal movement patterns. However, the results of recent studies suggest that progressive strength training can lead to increased strength and improved function, but low methodological quality and incomplete reporting on the training protocols hampers adequate interpretation of the results. This paper describes the design and training protocol of a randomized controlled trial to assess the effects of a school-based progressive functional strength training program for children with CP.</p> <p>Methods/Results</p> <p>Fifty-one children with Gross Motor Function Classification Systems levels I to III, aged of 6 to 13 years, were recruited. Using stratified randomization, each child was assigned to an intervention group (strength training) or a control group (usual care). The strength training was given in groups of 4–5 children, 3 times a week, for a period of 12 weeks. Each training session focussed on four exercises out of a 5-exercise circuit. The training load was gradually increased based on the child's maximum level of strength, as determined by the 8 Repetition Maximum (8 RM). To evaluate the effectiveness of the training, all children were evaluated before, during, directly after, and 6 weeks after the intervention period. Primary outcomes in this study were gross motor function (measured with the Gross Motor Function Measure and functional muscle strength tests) and walking ability (measured with the 10-meter, the 1-minute and the timed stair test). Secondary outcomes were lower limb muscle strength (measured with a 6 RM test, isometric strength tests, and a sprint capacity test), mobility (measured with a mobility questionnaire), and sport activities (measured with the Children's Assessment of Participation and Enjoyment). Spasticity and range of motion were assessed to evaluate any adverse events.</p> <p>Conclusion</p> <p>Randomized clinical trials are considered to present the highest level of evidence. Nevertheless, it is of utmost importance to report on the design, the applied evaluation methods, and all elements of the intervention, to ensure adequate interpretation of the results and to facilitate implementation of the intervention in clinical practice if the results are positive.</p> <p>Trial Registration</p> <p>Trial Register NTR1403</p

Assessment of maximal isometric hand grip strength in school-aged children

Hand grip strength (HGS) test is commonly used as an indicator of overall muscle strength in medical and sport practices. Recently, several studies have proposed that the measurement of the maximal HGS depends on dynamometer’s handle position. The aim of the present study was to identify the optimal handle position to obtain maximal HGS using the hand grip dynamometer (HGD) for school-aged children

Construct validity and responsiveness of Movakic: An instrument for the evaluation of motor abilities in children with severe multiple disabilities

Movakic is a newly developed instrument for measurement of motor abilities in children with severe multiple disabilities, with a satisfactory feasibility and content validity and good inter-observer and test-retest reliability. The objective of this study was to investigate its construct validity and responsiveness to change. Sixty children with severe multiple disabilities (mean age 7.7 years, range 2-16) were measured using Movakic six times during 18 months. Construct validity was assessed by correlating Movakic scores with expert judgment. In order to assess responsiveness, scores during 3-months intervals were compared (mean score-changes and intraclass correlations) during which some children experienced meaningful events influencing motor abilities and during which others experienced no such event. Forty-five percent of children had a lower cognitive development level than 6-month, 52% had Gross Motor Function Classification System level V and 37% had level IV. For 27 children all measurements were completed, six children dropped out. Construct validity was good (r=0.50-0.71). Responsiveness was demonstrated by significantly larger score changes after events than when such events did not occur. Movakic is a valid instrument for measuring motor abilities in children with severe multiple disabilities. Results suggest responsiveness to change in motor abilities after meaningful events

Effectiveness of Functional Power Training on Walking Ability in Young Children With Cerebral Palsy: Study Protocol of a Double-Baseline Trial

Purpose: To evaluate the effect of functional high-velocity resistance (power) training to improve walking ability of young children with cerebral palsy. Methods: Twenty-two children with bi-or unilateral spastic cerebral palsy, Gross Motor Function Classification System levels I and II, aged 4 to 10 years will be recruited. A double-baseline design will be used to compare a 14-week functional power training (3 times a week) program with a 14-week usual care period and a 14-week follow-up period. The power exercises will be loaded and performed at 50% to 70% of the maximum unloaded speed. Load will be increased when exercises are performed faster than 70% of the unloaded speed. Primary outcomes will be sprinting capacity (15-m Muscle Power Sprint Test) and goal attainment scaling score of walking-related treatment goals. Secondary outcomes will be walking speed (1-min walk test), endurance (10-m shuttle run test), gross motor function, lower-limb strength, and parent-reported mobility

Isometric muscle strength and mobility capacity in children with cerebral palsy

Purpose: To determine the relationship between isometric leg muscle strength and mobility capacity in children with cerebral palsy (CP) compared to typically developing (TD) peers. Method: Participants were 62 children with CP (6-13 years), able to walk with (n=10) or without (n=52) walking aids, and 47 TD children. Isometric muscle strength of five muscle groups of the leg was measured using hand-held dynamometry. Mobility capacity was assessed with the 1-min walk, the 10-m walk, sit-to-stand, lateral-step-up and timed-stair tests. Results: Isometric strength of children with CP was reduced to 36-82% of TD. When adjusted for age and height, the percentage of variance in mobility capacity that was explained by isometric strength of the leg muscles was 21-24% (walking speed), 25% (sit-to-stand), 28% (lateral-step-up) and 35% (timed-stair) in children with CP. Hip abductors and knee flexors had the largest contribution to the explained variance, while knee extensors showed the weakest correlation. Weak or no associations were found between strength and mobility capacity in TD children. Conclusion: Isometric strength, especially hip abductor and knee flexor strength, is moderately related to mobility capacity in children with CP, but not in TD children. To what extent training of these muscle groups will lead to better mobility capacity needs further study.Implications for RehabilitationStrength training in children with cerebral palsy (CP) may be targeted more specifically at hip abductors and knee flexors.The moderate associations imply that large improvements in mobility capacity may not be expected when strength increases

How can instructions and feedback with external focus be shaped to enhance motor learning in children?:A systematic review

AIM: This systematic review investigates the effectiveness of instructions and feedback with external focus applied with reduced frequency, self-controlled timing and/or in visual or auditory form, on the performance of functional gross motor tasks in children aged 2 to 18 with typical or atypical development. METHODS: Four databases (PubMed, Web of Science, Scopus, Embase) were systematically searched (last updated May 31st 2021). Inclusion criteria were: 1. children aged 2 to 18 years old; 2. Instructions/feedback with external focus applied with reduced frequency, self-controlled timing, and/or visual or auditory form as intervention, to learn functional gross motor tasks; 3. Instructions/feedback with external focus applied with continuous frequency, instructor-controlled timing, and/or verbal form as control; 4. performance measure as outcome; 5. (randomized) controlled studies. Article selection and risk of bias assessment (with the Cochrane risk of bias tools) was conducted by two reviewers independently. Due to heterogeneity in study characteristics and incompleteness of the reported data, a best-evidence synthesis was performed. RESULTS: Thirteen studies of low methodological quality were included, investigating effectiveness of reduced frequencies (n = 8), self-controlled timing (n = 5) and visual form (n = 1) on motor performance of inexperienced typically (n = 348) and atypically (n = 195) developing children, for acquisition, retention and/or transfer. For accuracy, conflicting or no evidence was found for most comparisons, at most time points. However, there was moderate evidence that self-controlled feedback was most effective for retention, and limited evidence that visual analogy was most effective for retention and transfer. To improve quality of movement, there was limited evidence that continuous frequency was most effective for retention and transfer. CONCLUSION: More methodologically sound studies are needed to draw conclusions about the preferred frequency, timing or form. However, we cautiously advise considering self-controlled feedback, visual instructions, and continuous frequency. TRIAL REGISTRATION: Registration: Prospero CRD42021225723. https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42021225723

Disability in adolescents and adults diagnosed with hypermobility-related disorders : a meta-analysis

OBJECTIVE: To (1) establish the association of the most common reported symptoms on disability; and (2) study the effectiveness of treatment on disability in patients with Ehlers-Danlos syndrome-hypermobility type (EDS-HT)/hypermobility syndrome (HMS). DATA SOURCES: An electronic search (Medical Subject Headings and free-text terms) was conducted in bibliographic databases CENTRAL/MEDLINE. STUDY SELECTION: Comparative, cross-sectional, longitudinal cohort studies and (randomized) controlled trials including patients with HMS/EDS-HT aged ≥17 years were considered for inclusion. A class of symptoms was included when 5 publications were available. In regards to treatment (physical, cognitive interventions), only (randomized) controlled trials were considered. Surgical and medicinal interventions were excluded. DATA EXTRACTION: Bias was assessed according to the methodological scoring tools of the Cochrane collaboration. Z-score transformations were applied to classify the extent of disability in comparison with healthy controls and to ensure comparability between studies. DATA SYNTHESIS: Initially, the electronic search yielded 714 publications, and 21 articles remained for analysis after selection. The following symptoms were included for meta-analysis: pain (n=12), fatigue (n=6), and psychological distress (n=7). Pain (r=.64, P=.021), fatigue (r=.91, P=.011), and psychological distress (r=.86, P=.018) had a significant impact on disability. Regarding treatment, a significant pain reduction was achieved by a variety of physical and cognitive approaches. Treatment effectiveness on disability was not established. CONCLUSIONS: Disability can affect patients with HMS/EDS-HT significantly and is highly correlated with both physical and psychological factors. Although evidence is available that physical and psychological treatment modalities can induce significant pain reduction, the evidence regarding disability reduction is lacking