Psychological and physiological effects of an acute bout of yoga before a simulated academic exam in university students.

Objective: Test anxiety is common among nursing students. Yoga is one form of physical activity which may be beneficial for pretest anxiety. Participants: Thirteen undergraduate students (85% nursing majors, 15% awaiting program entry, 20 ± 4.9 years of age) completed the crossover design study. Methods: Participants completed a yoga or control intervention (independent quiet study) on opposing testing days. At three time points, participants provided ratings of anxiety (visual analog scales), saliva samples for cortisol and alpha amylase, and seated heart rate variability (HRV, time and frequency domains) was recorded. Results: Yoga prior to a simulated exam had a positive impact on subjective measures of stress but did not positively impact cortisol or HRV compared to the control condition. Conclusions: There may be benefits to participating in 30 min of moderate intensity yoga for reduced perception of stress before a scholarly examination. Further research regarding the impacts of acute yoga on physiological measures of HRV and/or cortisol are warranted.

Effect of an Exercise and Nutrition Program on Quality of Life in Patients With Atrial Fibrillation: The Atrial Fibrillation Lifestyle Project (ALP).

Background: Studies of separate exercise and weight loss interventions have reported improvements in quality of life (QoL) or reduction in atrial fibrillation (AF) burden. We investigated the impact of a structured exercise, nutrition, and risk-factor-modification program on QoL and AF burden. Methods: In this trial, 81 successive patients with body mass index > 27 kg/m2 and nonpermanent AF were randomized to an intervention (n = 41) or control group (n = 40). The intervention consisted of cardiovascular risk management and a 6-month nutrition and exercise program, followed by a 6-month maintenance program. All participants received usual AF care. The primary end-point was QoL at 6 and 12 months. Results: At 6 months, we observed improved QoL among patients in the intervention group, relative to that among control-group patients (intervention (I) n = 34, control (C) n = 38) in the 36-item Short Form Survey Instrument scores on the subscales of vitality (I: 13.2 ± 20.4; C: 1.0 ± 14.9, P < 0.001), social functioning (I: 14.7 ± 24.1; C: 2.4 ± 21.2, P = 0.018), emotional well-being (I: 5.5 ± 14.1 ; C: -1.0 ± 13.3, P = 0.017), and general health perceptions (I: 8.1 ± 12.3; C: 2.7 ± 13.3, P = 0.009). At the 6-month follow-up, improvement in the scores on the subscales of vitality (P = 0.021) and emotional well-being (P = 0.036) remained significant. The burden of AF as measured by Holter monitor and Toronto AF symptom score was not significantly changed. Conclusions: A structured exercise and nutrition program resulted in significant sustained improvements in QoL, without reduction in AF burden. This type of program may provide an additional treatment for people with impaired QoL due to AF.

Introduction: Des études sur des interventions distinctes d'exercice et de perte de poids ont montré des améliorations de la qualité de vie (QdV) ou la réduction du fardeau de la fibrillation auriculaire (FA). Nous avons examiné les répercussions d'un programme structuré d'exercice, d'alimentation et de modification des facteurs de risque sur la QdV et le fardeau de la FA. Méthodes: Dans le présent essai, nous avons réparti de façon aléatoire 81 patients successifs dont l'indice de masse corporelle était > 27 kg/m2 et la FA était non permanente à une intervention (n = 41) ou à un groupe témoin (n = 40). L'intervention a consisté en la prise en charge du risque cardiovasculaire et un programme d'alimentation et d'exercice de six mois, et a été suivie d'un programme de maintien de six mois. Tous les participants ont reçu les soins usuels relatifs à la FA. Le principal critère d'évaluation était la QdV après six mois et 12 mois. Résultats: Après six mois, nous avons observé la QdV chez les patients du groupe d'intervention par rapport à celle des patients du groupe témoin (intervention [I] n = 34, témoin [C] n = 38) selon les scores de la version abrégée du questionnaire de 36 items aux sous-échelles sur la vitalité (I : 13,2 ± 20,4; C : 1,0 ± 14,9, P < 0,001), le fonctionnement social (I : 14,7 ± 24,1; C : 2,4 ± 21,2, P = 0,018), le bien-être émotionnel (I : 5,5 ± 14,1 ; C : ­1,0 ± 13,3, P = 0,017), et les perceptions de la santé générale (I : 8,1 ± 12,3; C : 2,7 ± 13,3, P = 0,009). Au suivi après six mois, l'amélioration des scores aux sous-échelles sur la vitalité (P = 0,021) et le bien-être émotionnel (P = 0,036) demeurait significative. Le fardeau de la FA selon le moniteur Holter et le score selon la Toronto Atrial Fibrillation Severity Scale n'avait pas changé de façon significative. Conclusions: Un programme structuré d'exercice et d'alimentation a donné lieu à des améliorations significatives et soutenues de la QdV, sans réduire le fardeau de la FA. Ce type de programme peut constituer un traitement supplémentaire aux personnes qui connaissent une diminution de leur QdV en raison de la FA.

Acute Effects of Exercise on Risk-Taking: Different Responses in Males and Females.

In recent years there has been great interest in the effects of exercise on cognition, but few have investigated whether physical activity influences risk-taking. Purpose: To investigate the effects of acute moderate to vigorous exercise on risky decision-making. Methods: Healthy (free of psychological or neurological conditions), recreationally active males and females (n = 20, 50% females, mean age = 22.4 years, sd = 2.48) performed either a 30-min bout of cycling at 50% to 60% of their maximal power output or watched a neutral film over the course of two laboratory visits (repeated measures, randomized crossover design). Following the interventions, participants completed computerized behavioral tasks: the Balloon-Analogue Risk Task (BART), the Risky Gains Task, and the STOP-IT task and provided saliva samples (pre and post) to measure changes in cortisol. Results: There was a significant interaction between sex and condition (p = .01, ηp2 = .3) for one of the risk-taking outcomes of the BART (number of explosions). Females exploded fewer balloons post-exercise. Performance on the other tasks did not change significantly between conditions (all p > .05). Cortisol increased significantly following exercise and responses did not differ between males and females. Considering cortisol change post-exercise similarly resulted in a significant sex by condition interaction (p = .005, ηp2 = .44), with males exploding more balloons and females exploding fewer post-exercise. Conclusion: Acute exercise appears to have differing effects on males and females. Exercise resulted in risk seeking in males and risk aversion in females as measured by the BART.

Does Higher Self-Reported Cardiorespiratory Fitness Reduce the Odds of Hospitalization From COVID-19?

BACKGROUND: Regular physical activity and higher cardiorespiratory (CR) fitness enhance immune function, possibly reducing coronavirus disease 2019 (COVID-19) infection severity. The aim was to assess the association between physical activity and self-reported CR fitness on COVID-19 infection characteristics. METHODS: Participants formerly testing positive for COVID-19 completed an online questionnaire measuring COVID-19 infection characteristics and complications, self-reported CR fitness level, physical activity, and sociodemographic and health-related characteristics. Self-reported CR fitness was determined as the pace to cover 4.8 km without becoming overly fatigued (with slow walking, brisk walking, jogging, and running corresponding to low, moderate, good, and excellent levels of fitness, respectively). RESULTS: A total of 263 individuals completed the survey. Compared with the lowest level of self-reported CR fitness, the odds of hospitalization significantly decreased by 64% (odds ratio = 0.36; 95% confidence interval, 0.13-0.98; P = .04) in individuals reporting the ability to maintain a brisk walk. In individuals reporting the ability to maintain a jogging pace, the further reduction in hospitalization was not significant (odds ratio = 0.22; 95% confidence interval, 0.05-1.04; P = .05). For COVID-19 symptom severity and number, there were no significant associations with self-reported CR fitness or physical activity levels. CONCLUSIONS: For individuals with low self-reported CR fitness, improving CR fitness represents a strategy to reduce the risk of hospitalization from COVID-19.

An Exploration of Sensation Seeking in Persons With Disabilities in Rehabilitation.

PURPOSE: This study reports the findings of a study about sensation-seeking or high-risk/challenging sports in persons who have disabilities. DESIGN: Exploratory, cross-sectional, and descriptive. METHODS: Two hundred and twenty-three recruitment e-mails were sent to potential participants. Data were collected through Qualtrics. FINDINGS: Mean score for Contextual Sensation Seeking Questionnaire for Skiing and Snowboarding (M = 30.21, SD = 8.18) was significantly lower than a sample of able-bodied skiers and snowboarders, t(239) = 2.75, p = .006. Mean for impulsive sensation seeking was lower than the same sample of able-bodied athletes cited in a previous study, t(240) = 4.56, p = .001. Means for the Zuckerman Kuhlman Personality Questionnaire subscales were impulsivity (M = 1.98, SD = 4.05) and sensation seeking (M = 6.75, SD = 2.68). CONCLUSIONS: This group scored lower in sensation seeking compared to able-bodied high-risk/challenging sports activities participants. Sensation seeking is not a motivating factor in this sample. CLINICAL RELEVANCE: Nurses could encourage rehabilitation patients to engage in challenging activities for personal and group mastery.

A comparison of genetic variants between proficient low- and high-risk sport participants.

Athletes participating in high-risk sports consistently report higher scores on sensation-seeking measures than do low-risk athletes or non-athletic controls. To determine whether genetic variants commonly associated with sensation seeking were over-represented in such athletes, proficient practitioners of high-risk (n = 141) and low-risk sports (n = 132) were compared for scores on sensation seeking and then genotyped at 33 polymorphic loci in 14 candidate genes. As expected, athletes participating in high-risk sports score higher on sensation seeking than did low-risk sport athletes (P < .01). Genotypes were associated with high-risk sport participation for two genes (stathmin, (P = .004) and brain-derived neurotrophic factor (P = .03)) as well as when demographically matched subsets of the sport cohorts were compared (P < .05); however, in all cases, associations did not survive correction for multiple testing.

Increased patterns of risky behaviours among helmet wearers in skiing and snowboarding.

BACKGROUND: There has been an ongoing debate as to whether wearing helmets in skiing and snowboarding increases the risk tolerance of participants. OBJECTIVE: To investigate the roles of demographic and personality variables, and helmet usage in predicting risk taking behaviours in a cross-sectional sample of intermediate and proficient skiers and snowboarders. METHODS: Risk taking in skiing was measured using a validated 10-item self-report measure which was designated as the outcome variable in a three step hierarchical regression. Independent predictors included age, sex, education, sport, ability, helmet usage, and personality traits that have been associated with risk taking: impulsivity and sensation seeking. RESULTS: In the final regression model, helmet use significantly predicted variance in risk taking (standardized ß=.10, p=.024), and the relationship remained after accounting for variance due to demographic variables and general trait measures. The partial relationship between risk taking and sex, ability, impulsivity, and sensation seeking were also significant (p<.05). CONCLUSION: High sensation seeking, high impulsivity, male sex, and proficiency were associated with increased patterns of risky behaviours in skiers and snowboarders, and after accounting for these factors, helmet use was a significant predictor of risk taking. The relationship between helmet use and risk taking was modest suggesting that the costs of increased risk taking is not likely to outweigh the protective benefits of a helmet.

Variants in the dopamine-4-receptor gene promoter are not associated with sensation seeking in skiers.

Sensation seeking is a personality trait that has been associated with disinhibited behaviours including substance use and gambling, but also with high-risk sport practices including skydiving, paragliding, and downhill skiing. Twin studies have shown that sensation seeking is moderately heritable, and candidate genes encoding components involved in dopaminergic transmission have been investigated as contributing to this type of behaviour. To determine whether variants in the regulatory regions of the dopamine-4-receptor gene (DRD4) influenced sport-specific sensation seeking, we analyzed five polymorphisms (-1106T/C, -906T/C, -809G/A, -291C/T, 120-bp duplication) in the promoter region of the gene in a cohort of skiers and snowboarders (n = 599) that represented a broad range of sensation seeking behaviours. We grouped subjects by genotype at each of the five loci and compared impulsive sensation seeking and domain-specific (skiing) sensation seeking between groups. There were no significant associations between genotype(s) and general or domain-specific sensation seeking in the skiers and snowboarders, suggesting that while DRD4 has previously been implicated in sensation seeking, the promoter variants investigated in this study do not contribute to sensation seeking in this athlete population.