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Effects of Acute Dance and Aerobic Exercise on Drug Craving and Food Reward in Women with Methamphetamine Dependence.
Zhou, YU, Finlayson, G, Liu, X, Zhou, Q, Liu, T, Zhou, C
Medicine and science in sports and exercise. 2021;(11):2245-2253
Abstract
INTRODUCTION Drug dependence causes an overestimation of drug-related stimuli and an underestimation of non-drug-related stimuli, such as food. The purpose of this study was to investigate the effects of acute moderate-intensity dance and aerobic exercise on drug craving, appetite, prefrontal neural activation to food cues, and food reward in women with methamphetamine MA dependence. METHODS Thirty-nine women who met the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition MA dependence criteria participated in the experiment and were randomly assigned to either a dance (n = 20) or exercise (n = 19) group. A moderate-intensity (65%-75% maximum heart rate) 35-min dance or treadmill intervention counterbalanced with a reading control session was conducted. After the intervention or control, subjective drug craving was measured before and after exposure to drug-related cues. Visual analog scales were used to measure subjective feelings of appetite. Participants then completed a visual food cue paradigm while using functional near-infrared spectroscopy to monitor prefrontal blood oxygen changes. Finally, the Leeds Food Preference Questionnaire was used to measure reward responses to different categories of food. RESULTS The results showed that the dance and exercise interventions reduced subjective craving for drugs after being exposed to drug cues (P = 0.019). Implicit wanting (P < 0.001) and relative preferences (P = 0.001) for high-calorie savory foods were all increased after interventions relative to control. Compared with the control session, the left dorsolateral prefrontal cortex (P = 0.020) was activated when viewing high-calorie foods after moderate-intensity aerobic exercise. CONCLUSIONS The current results support the use of moderate-intensity exercise as a therapeutic intervention to restore the balance between drug and nondrug rewards by decreasing cue-induced MA craving and increasing food reward.
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Readiness for Dancing En Pointe.
Shah, S
Physical medicine and rehabilitation clinics of North America. 2021;(1):87-102
Abstract
Advancing to pointe requires sufficient maturity, strength, and flexibility and adequate ballet training to develop the skills which usually occurs between the ages 11 and 13. Health practitioners can provide studios with an objective assessment to determine if a young dancer is ready to transition to en pointe. The evaluator should be proficient in ballet, because the evaluation largely is dance based and includes a history and physical examination as well as a comprehensive assessment. The plan includes health improvement tips and summarizes technique flaws as well as exercises to improve these and other deficits. The goal is to transition dancers safely to pointe.
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White matter plasticity in healthy older adults: The effects of aerobic exercise.
Mendez Colmenares, A, Voss, MW, Fanning, J, Salerno, EA, Gothe, NP, Thomas, ML, McAuley, E, Kramer, AF, Burzynska, AZ
NeuroImage. 2021;:118305
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Abstract
White matter deterioration is associated with cognitive impairment in healthy aging and Alzheimer's disease. It is critical to identify interventions that can slow down white matter deterioration. So far, clinical trials have failed to demonstrate the benefits of aerobic exercise on the adult white matter using diffusion Magnetic Resonance Imaging. Here, we report the effects of a 6-month aerobic walking and dance interventions (clinical trial NCT01472744) on white matter integrity in healthy older adults (n = 180, 60-79 years) measured by changes in the ratio of calibrated T1- to T2-weighted images (T1w/T2w). Specifically, the aerobic walking and social dance interventions resulted in positive changes in the T1w/T2w signal in late-myelinating regions, as compared to widespread decreases in the T1w/T2w signal in the active control. Notably, in the aerobic walking group, positive change in the T1w/T2w signal correlated with improved episodic memory performance. Lastly, intervention-induced increases in cardiorespiratory fitness did not correlate with change in the T1w/T2w signal. Together, our findings suggest that white matter regions that are vulnerable to aging retain some degree of plasticity that can be induced by aerobic exercise training. In addition, we provided evidence that the T1w/T2w signal may be a useful and broadly accessible measure for studying short-term within-person plasticity and deterioration in the adult human white matter.
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Higher-protein intake improves body composition index in female collegiate dancers.
Brown, AF, Welsh, T, Panton, LB, Moffatt, RJ, Ormsbee, MJ
Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme. 2020;(5):547-554
Abstract
Aesthetic athletes strive to attain an ideal body image and the physical demands placed on dancers make their body composition and fitness equally as important as their technique. Body composition has shown positive changes in response to increased protein intake and may improve aesthetics of dance performance. The purpose of this study was to determine the extent to which supplemental whey protein (PRO) would improve body composition in female collegiate dancers compared with an isocaloric placebo (PLA). Twenty-one (age, 19.6 ± 1.4 years) female collegiate dancers were randomly assigned to consume PRO or PLA (25 g, 3×/day) for 12 weeks. Laboratory testing at weeks 0, 6, and 12 included 24-h urine collection, body composition (dual-energy X-ray absorptiometry), resting metabolic rate, and performance. Data were reported as means ± SD. Significance was accepted at p < 0.05. Body weight, fat mass, and lean soft tissue did not change between groups or over time. Body composition index (BCI = [(LSTpost - LSTpre) + (FMpre - FMpost)]; where LST is lean soft tissue, FM is fat mass, pre is pre-intervention, and post is post-intervention) significantly improved over time in PRO (+0.6 ± 1.9) but not PLA (-1.8 ± 3.1; p = 0.048); however, neither group demonstrated changes in laboratory performance tests. Protein supplementation for 12 weeks significantly improved BCI and provided a simple way to improve the diet in female collegiate dancers. Novelty Twelve weeks of protein supplementation does not change body weight in female collegiate dancers. BCI improves following protein supplementation in female collegiate dancers.
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Studies of Classical Ballet Dancers' Equilibrium at Different Levels of Development and Versus Non-Dancers: A Systematic Review.
Rangel, JG, Divino Nilo Dos Santos, W, Viana, RB, Silva, MS, Vieira, CA, Campos, MH
Journal of dance medicine & science : official publication of the International Association for Dance Medicine & Science. 2020;(1):33-43
Abstract
In classical ballet, the execution of extreme movements on small bases of support causes the dancers constantly to seek balance. The objective of this systematic literature review was to evaluate the effects of classical ballet training on static and dynamic balance in order to emphasize the differences between dancers and non-dancers and between dancers with different levels of experience. Searches for scientific papers were conducted by two independent researchers in the PubMed, Science Direct, and LILACS databases. A secondary search was carried out by "snowballing" references in the selected studies. A modified Downs and Black checklist and the Grading of Recommendations Assessment, Development and Evaluation (GRADE) scale were used to evaluate the methodological quality and evidence strength of the included studies, respectively. From 364 initial studies, nine were found to be eligible (five did analyses in static situations, two in dyna- mic situations, and two in both). With a maximum potential of 10 points, the methodological quality ranged from 6 to 8 on the Downs and Black checklist. It was found that the level of experience in ballet makes for better balance. However, there are indications that classical ballet dancers become more dependent on vision to control balance compared to non-dancers.
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Effects of Dance/Movement Training vs. Aerobic Exercise Training on cognition, physical fitness and quality of life in older adults: A randomized controlled trial.
Esmail, A, Vrinceanu, T, Lussier, M, Predovan, D, Berryman, N, Houle, J, Karelis, A, Grenier, S, Minh Vu, TT, Villalpando, JM, et al
Journal of bodywork and movement therapies. 2020;(1):212-220
Abstract
INTRODUCTION It is generally accepted that physical activity promotes healthy aging. Recent studies suggest dance could also benefit cognition and physical health in seniors, but many styles and approaches of dance exist and rigorous designs for intervention studies are still scarce. The aim of this study was to compare the effects of Dance/Movement Training (DMT) to Aerobic Exercise Training (AET) on cognition, physical fitness and health-related quality of life in healthy inactive elderly. METHODS A single-center, randomized, parallel assignment, open label trial was conducted with 62 older adults (mean age = 67.48 ± 5.37 years) recruited from the community. Participants were randomly assigned to a 12-week (3x/week, 1hr/session) DMT program, AET program or control group. Cognitive functioning, physical fitness and health-related quality of life were assessed at baseline (T-0), and post-training (T-12 weeks). RESULTS 41 participants completed the study. Executive and non-executive composite scores showed a significant increase post-training (F(1,37) = 4.35, p = .04; F(1,37) = 7.01, p = .01). Cardiovascular fitness improvements were specific to the AET group (F(2,38) = 16.40, p < .001) while mobility improvements were not group-dependent (10 m walk: F(1,38) = 11.67, p = .002; Timed up and go: F(1,38) = 22.07, p < .001). CONCLUSIONS Results suggest that DMT may have a positive impact on cognition and physical functioning in older adults however further research is needed. This study could serve as a model for designing future RCTs with dance-related interventions. REGISTRATION clinicaltrials. gov Identifier NCT02455258.
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Injuries during transition periods across the year in pre-professional and professional ballet and contemporary dancers: A systematic review and meta-analysis.
Fuller, M, Moyle, GM, Hunt, AP, Minett, GM
Physical therapy in sport : official journal of the Association of Chartered Physiotherapists in Sports Medicine. 2020;:14-23
Abstract
OBJECTIVE To consider the association of injuries with transition periods in the dance year, i.e., when dancers return at the start of the year, and when they transition from rehearsal to performance periods. METHODS Six electronic databases were searched to November 2019. All English language peer-reviewed studies, of any study design investigating ballet and contemporary pre-professional and professional dance populations were included. Only those studies reporting on the timing of injury were included. RESULTS Fifteen cohort and two case-series studies were included. A meta-analysis of seven studies revealed the rate of injuries to be significantly higher for the second and third months (1.52; 95% confidence interval [CI]:1.11-2.08; 1.26; 95%CI:1.07-1.48 respectively) after the return to dance. Two further studies report more injuries up to Week 13 of the year. One study showed an increase in injured dancers at three and four weeks after transition from rehearsals to a performance season. Four studies show an increase in injuries at performance times. CONCLUSIONS Meta-analyses of seven studies shows the second and third months after returning to dance have a significantly higher rate of injuries. More research is needed to quantify training loads in dance. Practitioners should be cognisant of the higher injury rates during periods of transition and consider modifying load, as it is a potential contributing factor.
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Exploring factors influencing whether residents participate in square dancing using social cognitive theory: A cross-sectional survey in Chongqing, China.
Peng, F, Yan, H, Sharma, M, Liu, Y, Lu, Y, Zhu, S, Li, P, Ren, N, Li, T, Zhao, Y
Medicine. 2020;(4):e18685
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Abstract
Physical inactivity is a worldwide public health problem, and it is a risk factor for several chronic diseases. Square dancing nightly may be an efficient way to promote physical activity among Chinese residents. This study aims to explore factors that affect resident participation in square dancing on the basis of social cognitive theory constructs (outcome expectations, outcome expectancies, self-efficacy, self-control, and environment) that may provide a scientific basis for designing interventions to promote physical activity in the future.Forty squares near neighborhood communities in Chongqing were randomly selected. A sample of 1732 residents who came to these squares at 18:00-21:00 were interviewed using a social cognitive theory questionnaire jointly developed by researchers from Chongqing Medical University and Jackson State University.Among 1732 respondents, 279 (16.1%) were male and 1457 (83.9%) were female. A total of 939 (54.2%) of the respondents were square dancers. The mean age of the dancers was 58.6 (SD = 9.1) years. Of the dancers, 825 (87.9%) danced at least 150 minutes every week, and 792 (84.2%) indicated that they had danced for more than 1 year. All the constructs of social cognitive theory were significantly different between residents whether they danced or not (P < .001 for all). Women (OR = 1.54, 95% CI: 1.03-2.31) were more likely to dance. Nonretired residents (OR = 0.53, 95% CI: 0.39-0.74) were less likely to dance. Residents with income of more than CNY 4000 per month were less likely to dance (OR = 0.44, 95% CI: 0.23-0.86). Residents with high self-efficacy (OR = 2.01, 95% CI: 1.81-2.22), and high self-control (OR = 1.26, 95% CI: 1.18-1.34) were more likely to dance.This study provides salient implications for developing interventions to promote square dancing by using social cognitive theory. Gender, retirement, income, and self-efficacy would be the factors influencing whether residents participate in square dancing.
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Self-Directed Oral Vitamin D Supplementation in Professional Ballet Dancers: A Randomized Controlled Trial Pilot Study.
Rowan, FE, Benjamin-Laing, H, Kennedy, A, De Medici, A, Beasley, I, Haddad, FS
Journal of dance medicine & science : official publication of the International Association for Dance Medicine & Science. 2019;(3):91-96
Abstract
Inadequate levels of vitamin D may lead to poor performance in professional dancers. Therefore, dietary supplementation may be essential in this population. This longitudinal pilot study to a randomized controlled trial assessed dancer compliance with self-directed oral vitamin D supplementation. Seventy-one dancers, 41 females and 30 males with a mean age of 31.1 years, were recruited from The Royal Ballet, London. Baseline serum 25(OH)D levels were measured and dancers were interviewed, examined, and provided with oral supplements for the winter period, November 2011 to March 2012. Dancers with normal serum 25(OH)D levels were provided with maintenance supplements (1,000 IU/ day) and those with insufficient or deficient serum 25(OH)D levels were given a loading dose of 60,000 IU weekly for 2 and 6 weeks, respectively. Serum 25(OH) D levels were measured at 1 and 2 years and dancers were sampled for compliance with instructions. Mean compliance during loading and maintenance was 86% and 50%, respectively. Mean serum 25(OH)D levels at start and end of the study period were 79.3 ± 31.6 nmol/L and 78.68 ± 19.8 nmol/L, respectively. Only one-third of dancers with insufficient (N = 5) and deficient (N = 5) serum vitamin D levels improved to normal values. It is concluded that professional ballet dancers demonstrate good compliance with self-directed loading doses of vitamin D supplementation but poor compliance with maintenance doses. Poor maintenance compliance may have accounted for the low rates of serum vitamin D level improvement among dancers with insufficient or deficient levels.
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Dancing for Healthy Aging: Functional and Metabolic Perspectives.
Rodrigues-Krause, J, Krause, M, Reischak-Oliveira, A
Alternative therapies in health and medicine. 2019;(1):44-63
Abstract
CONTEXT Dancing has been used as a form of exercise to improve functional and metabolic outcomes during aging. The field lacks randomized, clinical trials (RCTs) evaluating metabolic outcomes related to dance interventions, but dancing may be a form of exercise that could induce positive effects on the metabolic health of older adults. However, primary studies seem very heterogonous regarding the trial designs, characteristics of the interventions, the methods for outcomes assessments, statistical powers, and methodological quality. OBJECTIVE The current research team intended to review the literature on the use of dance as a form of intervention to promote functional and metabolic health in older adults. Specifically, the research team aimed to identify and describe the characteristics of a large range of studies using dance as an intervention, summarizing them and putting them into perspective for further analysis. DESIGN The research team searched the following data sources-MEDLINE, Cochrane Wiley, Clinical Trials.gov, the Physiotherapy Evidence Database (PEDRO), and the Literatura Latino-Americana e do Caribe em Ciências da Saúde (LILACS)-for RCTs, quasi-experimental studies, and observational trials that compared the benefits of any style of dancing, combined with other exercises or alone, to nonexercising controls and/or controls practicing other types of exercise. SETTING The study took place at the Federal University of Rio Grande do Sul (Porto Alegre, Brazil). PARTICIPANTS Participants were aging individuals, >55 y, both with or without health conditions. INTERVENTIONS Interventions should be supervised, taking form as group classes, in a dance setting environment. Dance styles were divided into 5 categories for the review: (1) cultural dances developed by groups of people to reflect the roots of a certain region, such as Greek dance; (2) ballroom dance (ie, dances with partners performed socially or competitively in a ballroom, such as foxtrot); (3) aerobic dance with no partner required, which mixes aerobic moves with dance moves; (4) dance therapies, whichare special dance programs including emotional and physical aspects; and (5) classical dances, which are dances with a unique tradition and technique, such as ballet or jazz dance. OUTCOME MEASURES Studies needed to have evaluated functional and/or metabolic outcomes. Functional outcomes included (1) static and/or dynamic balance, (2) gait ability, (3) upper and/or lower muscle strength or power, (4) cardiorespiratory fitness, (5) flexibility, (6) risk of falls, and (7) quality of life. Metabolic outcomes included (1) lipid and glycemic profile; (2) systolic and diastolic blood pressure; (3) body composition; and (4) other specific cardiovascular risk factors or inflammatory or oxidative stress markers. RESULTS The research team retrieved 1042 articles, with 88 full texts assessed for eligibility, and 50 articles included in the analysis. Of the analyzed studies, 22 were RCTs evaluating dancing vs controls, and 3 were RCTs evaluating dancing vs other exercise. Regarding the participants of the reviewed studies: (1) 31 evaluated healthy individuals, (2) 7 evaluated patients suffering from Parkinson's disease, (3) 4 evaluated postmenopausal women, (4) 2 evaluated obese women, (5) 2 evaluated patients with chronic heart failure, (6) 1 evaluated frail older adults, (7) 1 evaluated individuals with visual impairments, (8) 1 evaluated persons with metabolic syndrome, and (9) 1 evaluated individuals with severe pain in the lower extremities. Regarding the interventions, most interventions were 12 wk long, 3 ×/wk, for 60 min each session. The dance styles most used were ballroom and cultural dances. Regarding the outcomes, functional and metabolic benefits were described in most of the included studies. Balance was the functional outcome most often assessed. CONCLUSIONS Any dance style can induce positive functional adaptations in older adults, especially related to balance. Metabolic improvements may also be a result of dancing; however, more RCTs are needed. Dancing may be a potential exercise intervention to promote health-related benefits for aging individuals.