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Li H, Wang C, Huang X, Xu L, Cao Y, Luo J, Zhang G. Chan-Chuang and resistance exercise for drug rehabilitation: a randomized controlled trial among Chinese male methamphetamine users. Front Public Health 2023; 11:1180503. [PMID: 37965508 PMCID: PMC10642185 DOI: 10.3389/fpubh.2023.1180503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 10/09/2023] [Indexed: 11/16/2023] Open
Abstract
Objective To examine the health benefits of Chan-Chuang and resistance exercise. Methods We deployed an 8-week randomized controlled trial, in which 76 male methamphetamine users were allocated to control (n = 25), Chan-Chuang (n = 26), and residence exercise groups (n = 25). Our primary outcomes were drug craving, mental wellbeing, sleep quality, heart rate (HR), systolic blood pressure (SBP), diastolic blood pressure (DBP), and mean arterial pressure (MAP). Our secondary outcomes were body mass index (BMI), vital capacity, grip strength, balance, and vertical jump. Results Chan-Chuang exercise resulted in reduced HR, DBP, and MAP, along with improvements in vital capacity, grip strength, and balance compared to the control group. Resistance exercise reduced SBP and MAP, and also improved vital capacity, grip strength, balance, and vertical jump. Conclusion These findings may support the role of Chan-Chuang and resistance exercise in maintaining the physical fitness of methamphetamine users at mandatory detention centers.
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Affiliation(s)
- Hansen Li
- Research Center for Exercise Detoxification, College of Physical Education, Southwest University, Chongqing, China
| | - Chao Wang
- Research Center for Exercise Detoxification, College of Physical Education, Southwest University, Chongqing, China
| | - Xuemei Huang
- Chongqing Xishanping Education and Correction Center, Chongqing, China
| | - Lubing Xu
- Chongqing Xishanping Education and Correction Center, Chongqing, China
| | - Yang Cao
- Clinical Epidemiology and Biostatistics, School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- Unit of Integrative Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Jiong Luo
- Research Center for Exercise Detoxification, College of Physical Education, Southwest University, Chongqing, China
| | - Guodong Zhang
- Research Center for Exercise Detoxification, College of Physical Education, Southwest University, Chongqing, China
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Darvishzadeh H, Mirzaee M, Jahani Y, Sharifi H. Age of Onset of Methamphetamine Consumption among the Iranian Youth Aged 19-29: A Cross-sectional Study. ADDICTION & HEALTH 2019; 11:138-147. [PMID: 31839911 PMCID: PMC6904974 DOI: 10.22122/ahj.v11i3.231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Background Around the world, one of the main concerns and risky behaviors among youths is methamphetamine consumption. Since the age of onset of methamphetamine use is decreasing, therefore, it is important to identify the effective factors on the age of onset of methamphetamine consumption. In the present study, factors affecting the age of onset of methamphetamine consumption was studied in Iranian youths aged 19-29 years. Methods In this cross-sectional nationwide study, individuals aged 19-29 years were selected through multistage cluster sampling and convenience sampling method from 13 provinces in Iran. People completed the questionnaire pertaining to knowledge, attitude, and history of methamphetamine consumption. In order to investigate the factors effective on the age of onset of methamphetamine consumption, we used the Weibull parametric model for data with doubly censored characteristic. Findings 3246 people participated in this study, half of whom were men and mostly single (60.3%), university student or graduate (50.2%), and unemployed (58.1%). Nearly 6% of participants have ever used methamphetamine. Mean and standard deviation (SD) of age of onset of methamphetamine use was 20.3 ± 3.3 years. Data analysis indicated that the variables of gender, marital status, education, knowing a methamphetamine consumer, knowing an ecstasy consumer, ecstasy consumption, illegitimate sex, attitude towards methamphetamine, and age group were the factors affecting the age of onset of methamphetamine consumption. Conclusion The results can contribute to the policy-makers to take the necessary interventions on the factors affecting the age of onset of methamphetamine consumption to reduce the methamphetamine consumption, especially in the critical young ages.
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Affiliation(s)
- Hadiseh Darvishzadeh
- HIV/STI Surveillance Research Center, and WHO Collaborating Center for HIV Surveillance, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran
| | - Moghaddameh Mirzaee
- Modeling in Health Research Center, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran
| | - Yunes Jahani
- Modeling in Health Research Center, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran
| | - Hamid Sharifi
- HIV/STI Surveillance Research Center, and WHO Collaborating Center for HIV Surveillance, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran
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Turning points, identity, and social capital: A meta-ethnography of methamphetamine recovery. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2019; 67:79-90. [PMID: 30970290 DOI: 10.1016/j.drugpo.2019.02.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 01/30/2019] [Accepted: 02/27/2019] [Indexed: 01/09/2023]
Abstract
BACKGROUND Despite the increasing prevalence and distinct nature of methamphetamine-related harms, treatment models are limited, and relapse is common. Meta-ethnography has been increasingly used to synthesise qualitative health research and develop new concepts or theories. This meta-ethnography aimed to explore methamphetamine users' experiences of cessation, recovery, and relapse, to better understand how to tailor support for this population. METHODS A systematic review was conducted of six electronic databases, supported by hand searches of leading journals and reviews of reference lists. Reports were included that used naturalistic participant observation to examine methamphetamine cessation, recovery, and relapse with at least 50% of their sample. The life course approach to drug use was used to inform the process of data analysis and interpretation. The final sample was synthesised using Reciprocal Translation supported by open and axial coding. RESULTS Nineteen sources were selected, thirteen of which were conducted in the United States. Two themes were identified: methamphetamine users are exposed to a range of relapse triggers, but also triggers for recovery, and their susceptibility to these triggers is largely determined by their social environment; and the process of recovery requires changes in personal and social identity which can be a barrier to recovery for some users. CONCLUSION These findings present the concept of recovery triggers and highlight the role of wider risk environments in determining methamphetamine recovery, and the negative potential of social capital. These themes also address the ongoing debate regarding the agency of drug users, and the impact of this debate on drug user's experiences of recovery.
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Morris L, Stander J, Ebrahim W, Eksteen S, Meaden OA, Ras A, Wessels A. Effect of exercise versus cognitive behavioural therapy or no intervention on anxiety, depression, fitness and quality of life in adults with previous methamphetamine dependency: a systematic review. Addict Sci Clin Pract 2018; 13:4. [PMID: 29338767 PMCID: PMC5771022 DOI: 10.1186/s13722-018-0106-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 01/08/2018] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Methamphetamine (MA) is a highly addictive psychostimulant used by approximately 52 million people worldwide. Chronic MA abuse leads to detrimental physiological and neurological changes, as well as increases in anxiety and depression, and decreases in overall fitness and quality of life. Exercise has been reported to possibly reverse physiological and neurological damage caused by previous MA use, and to reduce anxiety and depression in this population. The aim of this systematic review was to identify, clinically appraise and synthesise the available evidence for the effectiveness of exercise, compared to cognitive behavioural therapy (CBT), standard care or no intervention, on decreasing anxiety and depression and improving fitness and quality of life in previous MA users. METHODS Seven computerised databases were searched from inception to May 2017, namely Scopus, Cochrane Library, PubMed/MEDLINE, PEDro, CINAHL, and ScienceDirect. Search terms included exercise, methamphetamine, fitness measures, depression, anxiety and quality of life. Randomised and non-randomised controlled- or clinical trials and pilot studies, published in English, were considered for inclusion. Methodological quality was critically appraised according to the PEDro scale. Heterogeneity across studies regarding control groups and assessment intervals rendered meta analyses inappropriate for this review and results were thus described narratively using text and tables. RESULTS Two hundred and fifty-one titles were identified following the initial search, and 14 potentially-relevant titles were selected and the abstracts reviewed. Three studies (two randomised controlled trials and one quasi-experimental pilot) were included, with an average PEDro score of 6.66. Exercise resulted in significantly lower depression and anxiety scores versus CBT (p = 0.001). Balance also significantly improved following exercise versus standard care (p < 0.001); as did vital capacity, hand-grip and one-leg stand with eyes closed. There were significant changes in all subdivisions of the Quality of Life Scale Questionnaire (p < 0.05), except psychology (p = 0.227). CONCLUSIONS Level II evidence suggests that exercise is effective in reducing anxiety and depression and improving fitness in previous MA users, and Level III-2 evidence suggests that exercise is beneficial for improving quality of life in this population. Overall recovery in previous MA dependents might be significantly enhanced by including exercise in the rehabilitation process. Further research is required to strengthen these conclusions and to inform policy and health systems effectively.
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Affiliation(s)
- Linzette Morris
- Division of Physiotherapy, Department of Health and Rehabilitation Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, PO Box 241, Cape Town, 8000 South Africa
| | - Jessica Stander
- Division of Physiotherapy, Department of Health and Rehabilitation Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, PO Box 241, Cape Town, 8000 South Africa
| | - Wardah Ebrahim
- Division of Physiotherapy, Department of Health and Rehabilitation Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, PO Box 241, Cape Town, 8000 South Africa
| | - Stephanie Eksteen
- Division of Physiotherapy, Department of Health and Rehabilitation Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, PO Box 241, Cape Town, 8000 South Africa
| | - Orissa Anna Meaden
- Division of Physiotherapy, Department of Health and Rehabilitation Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, PO Box 241, Cape Town, 8000 South Africa
| | - Ané Ras
- Division of Physiotherapy, Department of Health and Rehabilitation Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, PO Box 241, Cape Town, 8000 South Africa
| | - Annemarie Wessels
- Division of Physiotherapy, Department of Health and Rehabilitation Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, PO Box 241, Cape Town, 8000 South Africa
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Miner NB, Elmore JS, Baumann MH, Phillips TJ, Janowsky A. Trace amine-associated receptor 1 regulation of methamphetamine-induced neurotoxicity. Neurotoxicology 2017; 63:57-69. [PMID: 28919515 PMCID: PMC5683899 DOI: 10.1016/j.neuro.2017.09.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 09/13/2017] [Accepted: 09/14/2017] [Indexed: 12/20/2022]
Abstract
Trace amine-associated receptor 1 (TAAR1) is activated by methamphetamine (MA) and modulates dopaminergic (DA) function. Although DA dysregulation is the hallmark of MA-induced neurotoxicity leading to behavioral and cognitive deficits, the intermediary role of TAAR1 has yet to be characterized. To investigate TAAR1 regulation of MA-induced neurotoxicity, Taar1 transgenic knock-out (KO) and wildtype (WT) mice were administered saline or a neurotoxic regimen of 4 i.p. injections, 2h apart, of MA (2.5, 5, or 10mg/kg). Temperature data were recorded during the treatment day. Additionally, striatal tissue was collected 2 or 7days following MA administration for analysis of DA, 3,4-dihydroxyphenylacetic acid (DOPAC), homovanillic acid (HVA), and tyrosine hydroxylase (TH) levels, as well as glial fibrillary acidic protein (GFAP) expression. MA elicited an acute hypothermic drop in body temperature in Taar1-WT mice, but not in Taar1-KO mice. Two days following treatment, DA and TH levels were lower in Taar1-KO mice compared to Taar1-WT mice, regardless of treatment, and were dose-dependently decreased by MA. GFAP expression was significantly increased by all doses of MA at both time points and greater in Taar1-KO compared to Taar1-WT mice receiving MA 2.5 or 5mg/kg. Seven days later, DA levels were decreased in a similar pattern: DA was significantly lower in Taar1-KO compared to Taar1-WT mice receiving MA 2.5 or 5mg/kg. TH levels were uniformly decreased by MA, regardless of genotype. These results indicate that activation of TAAR1 potentiates MA-induced hypothermia and TAAR1 confers sustained neuroprotection dependent on its thermoregulatory effects.
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Affiliation(s)
- Nicholas B Miner
- Research Service, VA Portland Health Care System, Portland, OR, USA; Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, OR, USA
| | - Josh S Elmore
- Designer Drug Research Unit, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD 21224, USA
| | - Michael H Baumann
- Designer Drug Research Unit, Intramural Research Program, National Institute on Drug Abuse, National Institutes of Health, Baltimore, MD 21224, USA
| | - Tamara J Phillips
- Research Service, VA Portland Health Care System, Portland, OR, USA; Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, OR, USA; The Methamphetamine Abuse Research Center, Oregon Health & Science University, Portland, OR, USA
| | - Aaron Janowsky
- Research Service, VA Portland Health Care System, Portland, OR, USA; Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, OR, USA; The Methamphetamine Abuse Research Center, Oregon Health & Science University, Portland, OR, USA; Department of Psychiatry, Oregon Health & Science University, Portland, OR, USA.
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Cardiovascular disease among people with drug use disorders. Int J Public Health 2015; 60:659-68. [PMID: 26104131 DOI: 10.1007/s00038-015-0698-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 05/06/2015] [Accepted: 05/27/2015] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVES To present the prevalence and incidence of cardiovascular disease (CVD) in a national cohort of patients seeking treatment for drug use disorders (DUD). METHODS This is a longitudinal record linkage study of consecutive DUD treatment admissions between 2000 and 2006 from Denmark. RESULTS Of 17,642 patients seeking treatment for DUD, 828 individuals (4.53%) had a history of CVD at treatment entry. Among the remaining patients, 16,820 were traced and 1535 new incident cases of CVD were observed during a mean follow-up time of 7.5 years. The incidence of CVD was associated with intravenous drug use [subhazard ratio (SHR) = 1.41, p < 0.001], not responding to injection question (SHR = 1.23, p = 0.005), older age (SHR = 1.04 per year, p = 0.000), use of prescription methadone (SHR = 1.32, p < 0.001), use of benzodiazepines (SHR = 1.21, p = 0.005), and being referred to methadone treatment (SHR = 1.15, p = 0.022). The use of amphetamines was negatively associated with the risk of CVD within this cohort (SHR = 0.75, p = 0.001). CONCLUSIONS Patients injecting drugs using prescribed methadone were at elevated risk for cardiovascular disease and should be monitored for CVD. Opioid medications should be evaluated in terms of their cardiovascular sequelae.
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Gantos MA, Manzotti A, Yuan JCC, Afshari FS, Marinis A, Syros G, Rynn MH, Sukotjo C. Prosthodontics Treatment Considerations for Methamphetamine-Dependent Patients. J Prosthodont 2015; 24:64-70. [DOI: 10.1111/jopr.12245] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/29/2014] [Indexed: 11/27/2022] Open
Affiliation(s)
- Meredith A. Gantos
- Advanced Education in General Dentistry; V.A. Dental Clinic; San Antonio TX
| | - Anna Manzotti
- Department of Restorative Dentistry; University of Illinois at Chicago College of Dentistry; Chicago IL
| | - Judy Chia-Chun Yuan
- Department of Restorative Dentistry; University of Illinois at Chicago College of Dentistry; Chicago IL
| | - Fatemeh S. Afshari
- Department of Restorative Dentistry; University of Illinois at Chicago College of Dentistry; Chicago IL
| | - Aristotelis Marinis
- Department of Restorative Dentistry; University of Illinois at Chicago College of Dentistry; Chicago IL
| | | | - Michelle Howard Rynn
- Department of Restorative Dentistry; University of Illinois at Chicago College of Dentistry; Chicago IL
| | - Cortino Sukotjo
- Department of Restorative Dentistry; University of Illinois at Chicago College of Dentistry; Chicago IL
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Unmasking of familial long QT syndrome type 2 with crystal methamphetamine exposure. Heart Rhythm 2014; 11:1836-8. [PMID: 24882508 DOI: 10.1016/j.hrthm.2014.05.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Indexed: 11/20/2022]
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Brecht ML, Herbeck D. Time to relapse following treatment for methamphetamine use: a long-term perspective on patterns and predictors. Drug Alcohol Depend 2014; 139:18-25. [PMID: 24685563 PMCID: PMC4550209 DOI: 10.1016/j.drugalcdep.2014.02.702] [Citation(s) in RCA: 161] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 02/12/2014] [Accepted: 02/18/2014] [Indexed: 11/20/2022]
Abstract
INTRODUCTION This paper describes methamphetamine (MA) use patterns, specifically the duration of continuing abstinence ("time to relapse") for periods averaging 5 years post-discharge from treatment for MA use, and the relationship with selected user and treatment characteristics. METHODS A sample of 350 treatment admissions from a large county substance use disorder (SUD) treatment system was randomly selected (within gender, race/ethnicity, treatment modality strata). Retrospective self-report data are from natural history interviews (NHI) conducted approximately 3 years after treatment and a follow-up of 2-3 years later. Relapse is defined as any use of MA with time as the number of months of continuous MA abstinence after treatment discharge until relapse. This outcome was constructed from a monthly MA use timeline using NHI data. A Cox model was used to examine time to relapse and predictors. RESULTS Sixty-one percent of the sample relapsed to MA use within 1 year after treatment discharge and 14% during years 2-5. Significant protective factors predicting longer time to relapse included having experienced serious MA-related psychiatric/behavioral problems (hazard ratio [HR]=0.75, p=0.027), longer duration of the index treatment episode (HR=0.93, p=0.001), and participating in self-help or other treatment during the post-treatment abstinence period (HR=0.29, p<0.001); risk factors for shorter time to relapse included having a parent with alcohol and/or drug use problems (HR=1.35, p=0.020) and involvement in MA sales (HR=1.48, p=0.002). CONCLUSIONS Results contribute a long-term perspective on patterns of MA use following treatment and support a need for early post-treatment and long-term continuing care and relapse-prevention services.
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Affiliation(s)
- Mary-Lynn Brecht
- Integrated Substance Abuse Programs, Department of Biobehavioral Sciences, David Geffen School of Medicine, University of California, Los Angeles, 11075 Santa Monica Blvd., Suite 100, Los Angeles, CA 90025, United States; School of Nursing, University of California, Los Angeles, Factor 5-151, 700 Tiverton Ave., Los Angeles, CA 90095, United States.
| | - Diane Herbeck
- Integrated Substance Abuse Programs, Department of Biobehavioral Sciences, David Geffen School of Medicine, University of California, Los Angeles, 11075 Santa Monica Blvd., Suite 100, Los Angeles, CA 90025, United States
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Rawson RA. Current research on the epidemiology, medical and psychiatric effects, and treatment of methamphetamine use. J Food Drug Anal 2013; 21:S77-S81. [PMID: 25214749 DOI: 10.1016/j.jfda.2013.09.039] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Methamphetamine (MA) is a drug that is widely used in many parts of the world. It has multiple neurobiological impacts on the nervous system, some of which are transitory and some more long lasting. MA activates the reward system of the brain and produces effects that are highly reinforcing, which can lead to abuse and dependence. Routes of administration that produce rapid onset of the drug's effects (i.e., smoking and injection) are likely to lead to more rapid addiction and more medical and psychiatric effects. The medical effects of MA use are extensive, and chronic use of MA can produce significant neurological damage as well as damage to cardiovascular, pulmonary, and other organ systems. Both acute and chronic MA use can lead to extreme paranoia, anxiety, and depression, and following discontinuation of MA use, cognitive deficits and anhedonia can persist for months. No effective pharmacotherapies have been developed for the treatment of MA dependence, although this is an area of very active research. Several behavioral treatments have been shown to reduce MA use, but better treatments are needed. The research agenda for MA is substantial, with development of effective pharmacotherapies as one of the most important priorities.
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Affiliation(s)
- Richard A Rawson
- UCLA Integrated Substance Abuse Programs, Semel Institute for Neuroscience and Human Behavior, David Geffen School of Medicine, University of California, Los Angeles, CA
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Eight weeks of exercise training improves fitness measures in methamphetamine-dependent individuals in residential treatment. J Addict Med 2013; 7:122-8. [PMID: 23552821 DOI: 10.1097/adm.0b013e318282475e] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVES Physical exercise has been shown to benefit diverse medical and behavioral conditions. This study assesses the feasibility and efficacy of an 8-week endurance and resistance training program on fitness measures in individuals undergoing residential treatment for methamphetamine (MA) dependence. METHODS A total of 39 MA-dependent individuals were randomized to 3 days/week of exercise training (ET, n = 15) or health education without training (equal attention [EA], n = 14) over 8 weeks. Aerobic performance ((Equation is included in full-text article.)VO2max) was measured by indirect calorimetry, body composition by skinfolds, muscle strength by 1-repetition maximum (1-RM), and endurance at 85% of 1-RM for both leg press (LP) and chest press (CP). RESULTS A total of 29 individuals completed the study for a 74% adherence rate. Baseline characteristics (mean ± SD) were balanced between groups: age 31 ± 7 years; height = 1.74 ± 0.07 m; weight 82.0 ± 15.0 kg. The ET group significantly improved (Equation is included in full-text article.)O2max by 0.63 ± 0.22 L/min (+21%), LP strength by 24.4 ± 5.6 kg (+40%), and CP strength by 20.6 ± 5.7 kg (+49%). The ET group increased LP and CP endurance by 120% and 96%, respectively and showed significant reductions in body weight of 1.7 ± 2.4 kg (-2%), % body fat of 2.8 ± 1.3% (-15%), and fat weight 2.8 ± 1.8 kg (-18%). All changes were significant (P < 0.001) for ET, and no changes were seen for the EA group. CONCLUSIONS Individuals recovering from MA dependence showed substantial improvements in aerobic exercise performance, muscle strength and endurance, and body composition with ET. These findings demonstrate the feasibility of an ET intervention in these participants and also show excellent responsiveness to the exercise stimulus resulting in physiological changes that might enhance recovery from drug dependency.
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Abstract
Significant public health problems associated with methamphetamine (MA) production and use in the United States have emerged over the past 25 years; however, there has been considerable controversy about the size of the problem. Epidemiological indicators have provided a mixed picture. National surveys of the adult U.S. population and school-based populations have consistently been used to support the position that MA use is a relatively minor concern. However, many other data sources, including law-enforcement groups, welfare agencies, substance abuse treatment program admissions, criminal justice agencies, and state/county executives indicate that MA is a very significant public health problem for many communities throughout much of the country. In this article, we describe (a) the historical underpinnings of the MA problem, (b) epidemiological trends in MA use, (c) key subgroups at risk for MA problems, (d) the health and social factors associated with MA use, (e) interventions available for addressing the MA problem, and (f) lessons learned from past efforts addressing the MA problem.
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Affiliation(s)
- Rachel Gonzales
- Integrated Substance Abuse Programs, Semel Institute for Neuroscience and Human Behavior, David Geffen School of Medicine, University of California, Los Angeles, California 90025, USA.
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