Aerobic exercise training ameliorates craving and inhibitory control in methamphetamine dependencies: A randomized controlled trial and event-related potential study

ObjectiveMethamphetamine (MA) usage has been recognized as a prominent substance-abuse issue. While exercise training reportedly improves fitness and mental status in the MA-dependent, how exercise training affects addiction and cognitive deficiency has yet to be established. The current study aimed to determine the effects of aerobic exercise training on both MA-associated cravings and inhibitory control among those with MA dependencies.DesignA 12-week randomized controlled trial.MethodSixty-two people with MA dependencies recruited through the Drug Rehabilitation Bureau were assigned to either an aerobic exercise or attentional control group, with 50 participants completing the trial. The aerobic exercise program involved three 30-min sessions of moderate-intensity exercise per week. Along with a pre-test assessment, craving levels were evaluated every three weeks, and data on neutral and MA-related inhibitory control as well as its elicited neuroelectric activation were collected at the end of the intervention.ResultsCompared with the control group, the exercise group experienced attenuated MA craving levels after 6 weeks of the exercise program, and the decreased trend was maintained until the termination of treatment. In the post-test, the exercise group also demonstrated more accuracy in behavioral inhibitory control as well as greater N2 amplitude in the Nogo condition of both the standard and MA-related tasks than those in the control group or pre-test.ConclusionsThe current study provides the first evidence that aerobic exercise training may be efficacious for MA-associated cravings and inhibitory control from behavioral and neuroelectric perspectives among MA-dependent individuals.     

Effects of aerobic exercise on anxiety sensitivity

Anxiety sensitivity is a known precursor to panic attacks and panic disorder, and involves the misinterpretation of anxiety-related sensations. Aerobic exercise has been shown to reduce generalized anxiety, and may also reduce anxiety sensitivity through exposure to feared physiological sensations. Accordingly, 54 participants with elevated anxiety sensitivity scores completed six 20-min treadmill exercise sessions at either a high-intensity aerobic ( n = 29 ) or low-intensity ( n = 25 ) level. Self-ratings of anxiety sensitivity, fear of physiological sensations associated with anxiety, and generalized anxiety were obtained at pre-treatment, post-treatment, and one-week follow-up. Results indicated that both high- and low-intensity exercise reduced anxiety sensitivity. However, high-intensity exercise caused more rapid reductions in a global measure of anxiety sensitivity and produced more treatment responders than low-intensity exercise. Only high-intensity exercise reduced fear of anxiety-related bodily sensations. The implications of these findings are discussed.     

Potential Clinical Implications of Implicit and Explicit Attitudes Within Possible Exercise Selves Schemata: A Pilot Study

Our purpose was to explore implicit as well as explicit exercise schemata of 51 inactive to highly active college students. For the implicit measure, a pilot study was used to establish the word set (exercise-related, nonexercise-related, and nonwords) for the lexical decision task. A latency differential was calculated based on reaction times to these word sets. Participants used self-regulatory functions to rate both hoped and feared exercise selves and reported workout hours. An estimate of aerobic fitness was derived. Results showed that implicit exercise attitudes were related to the importance placed on being an exerciser and on avoiding being a nonexerciser. Those who self-identified as an exerciser had higher levels of self-efficacy, workouts, and fitness. In contrast, those who self-identified as a nonexerciser were less active and fit and seemed to dwell on negative thoughts related to self-efficacy. Clinicians might help clients explore these attitudes, especially importance.     

‘On-the ground’ strategy matrix for fostering quality participation experiences among persons with disabilities in community-based exercise programs

ObjectiveThe purposes of this paper are to (1) document the generation and refinement of a quality participation strategy list to ensure resonance and applicability within community-based exercise programs (CBEPs) for persons with physical and intellectual disabilities, and (2) identify theoretical links between strategies and the quality participation constructs.MethodsTo address purpose one, a list of strategies to foster quality participation among members was extracted from qualitative interviews with providers from nine CBEPs serving persons with physical disabilities. Next, providers from CBEPs serving persons with physical (n = 9) and intellectual disabilities (n = 6) were asked to identify the strategies used, and examples of their implementation, within their programs. Additional strategies noted by providers and in recent published syntheses were added to the preliminary list. A re-categorization and revision process was conducted. To address purpose two, 22 researchers with expertise in physical and/or intellectual disability, physical activity, participation and/or health behaviour change theory completed a closed-sort task to theoretically link each strategy to the constructs of quality participation.ResultsThe final list of 85 strategies is presented in a matrix. Each strategy has explicit examples and proposed theoretical links to the constructs of quality participation.ConclusionsThe strategy matrix offers a theoretically-meaningful representation of how quality participation-enhancing strategies can be practically implemented “on-the-ground” in CBEPs for persons with disabilities.     

Reduced emotional stress reactivity to a real-life academic examination stressor in students participating in a 20-week aerobic exercise training: A randomised controlled trial using Ambulatory Assessment

ObjectivesTo examine if a preventive 20-week aerobic exercise intervention (AET) can improve emotional stress reactivity during real-life stress.DesignRandomised controlled trial; within-subject design.MethodSixty-one inactive students were randomly assigned to a waiting control and an AET group. To capture the situation-specific, intra-individual data in real life, electronic diaries were used. Participants reported their moods and perceived stress (PS) repeatedly over two days during their daily routines pre- and post-intervention. The pre-intervention baseline assessment was scheduled at the beginning of the semester, and the post-intervention assessment was scheduled at a real-life stressful episode, an academic examination. For the aerobic fitness assessment, both groups completed a cardiopulmonary exercise test on the treadmill before and after the intervention. Multilevel models (MLMs) were conducted to compare within- and between-subject associations.ResultsSignificant emotional stress reactivity was evident in both groups during all assessment periods. However, participants in the AET group showed lower emotional stress reactivity compared with their control counterparts after the 20-week training programme during the real-life stress episode (the academic examination).ConclusionsAET conferred beneficial effects on emotional stress reactivity during an academic examination, which is likely an extremely stressful real-life situation for students.AET appears to be a promising strategy against the negative health effects of accumulated emotional stress reactivity.     

Can physical activity be used as a tool to reduce depression in patients after a cardiac event? What is the evidence? A systematic literature study

A reduction in the incidence of cardiovascular diseases (CVD) has been reported in the Western world, but post‐infarction depression often occurs and is related to poor medical outcomes. The aim of this study was to examine the scientific literature by a systematic review, in order to find evidence for whether physical activity can be a tool to reduce depression in patients who have suffered a cardiac event. Three databases were systematically searched (PubMed, CINAHL, and Cochrane), and the GRADE protocol was used in combination with a revised Amstar‐protocol for the systematic review. Scientific reports fitting the area were scarce. Finally, ten studies were included in this study: one meta‐analysis, five randomized controlled trials, and four clinical trials. The results showed low to moderate evidence for the use of low to moderate levels of exercise as a tool to reduce depression in post‐coronary artery event patients. This study concluded positive effects of physical activity as a tool to reduce depression in post‐coronary artery event patients. Physiotherapists could be further involved in increasing physical activity after cardiac events. More studies are needed in the area.     

Social cognitive theory correlates of moderate-intensity exercise among adults with type 2 diabetes

The purpose of this study was to identify social cognitive theory (SCT) correlates of moderate- to vigorous-intensity exercise (MVPA) among adults with type 2 diabetes. Adults with type 2 diabetes (N = 181) participated in the study. Participants were recruited through ResearchMatch.org to complete an online survey. The survey used previously validated instruments to measure dimensions of self-efficacy, self-regulation, social support, outcome expectations, the physical environment, and minutes of MVPA per week. Spearman Rank Correlations were used to determine the relationship between SCT variables and MVPA. Classification and Regression Analysis using a decision tree model was used to determine the amount of variance in MVPA explained by SCT variables. Due to low levels of vigorous activity, only moderate-intensity exercise (MIE) was analyzed. SCT variables explained 42.4% of the variance in MIE. Self-monitoring, social support from family, social support from friends, and self-evaluative outcome expectations all contributed to the variability in MIE. Other contributing variables included self-reward, task self-efficacy, social outcome expectations, overcoming barriers, and self-efficacy for making time for exercise. SCT is a useful theory for identifying correlates of MIE among adults with type 2 diabetes. The SCT correlates can be used to refine diabetes education programs to target the adoption and maintenance of regular exercise.     

Exercise training and health-related quality of life in generalized anxiety disorder

ObjectiveTo quantify the effects of six-weeks of resistance (RET) and aerobic exercise training (AET) on quality of life (QoL) among sedentary women with Generalized Anxiety Disorder (GAD).DesignData from our published randomized controlled trial of the effects of six-weeks of either RET or AET among GAD patients were analyzed.MethodThirty women with GAD were randomized to either six weeks of twice-weekly lower-body weightlifting or cycling, or wait-list control (WL). SF-36 subscales assessed dimensions of QoL. Hedges’ d effect sizes (95%CIs) quantified the magnitude of change in response to exercise training compared to WL.ResultsRET significantly improved role-physical (d = 1.04; 95%CI: [0.11–1.97]), role-emotional (d = 0.96; [0.04–1.89]), and mental health (d = 1.05; [0.11–1.98]). AET resulted in significant improvements in physical function (d = 1.31; [0.34–2.27]) and vitality (d = 0.93; [0.01–1.85]).ConclusionsExercise training improves dimensions of QoL among GAD patients. The largest effects were observed for role impairments, physical function, vitality, and mental health.     

Does the German version of the Exercise Dependence Scale measure exercise dependence?

ObjectiveTo examine the concordance of a questionnaire-based categorization as ‘at-risk for exercise dependence’ and an interview-based diagnosis of exercise dependence.DesignOne hundred thirty four subjects answered the German version of the Exercise Dependence Scale-21 (EDS-G). They were also assessed with a structured clinical interview for exercise dependence.MethodThe congruence between the questionnaire-based categorizations of ‘at-risk for exercise dependence’ and the diagnosis of exercise dependence based on the interview was examined using κ-coefficients.ResultThe agreement between questionnaire-based and interview-based diagnoses was fair to moderate with more false positive categorization based on the EDS-G.ConclusionAssuming that a structured clinical interview allows a more accurate diagnostic categorization, the EDS-G might overestimate the prevalence of exercise dependence.