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      Cardiorespiratory fitness, muscular strength, and obesity in adolescence and later chronic disability due to cardiovascular disease: a cohort study of 1 million men

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          Abstract

          Aims

          Cardiorespiratory fitness, muscular strength, and obesity in adulthood are risk factors for cardiovascular disease (CVD). However, little is known regarding the associations of these risk factors, already in adolescence, with later disability due to chronic CVD. Hence, we investigated associations of cardiorespiratory fitness, muscular strength, and body mass index (BMI) in adolescence with later chronic disability due to specific causes of CVD disability (i.e. cerebrovascular disease, ischaemic heart disease and heart failure).

          Methods and results

          This population-based cohort study included 1 078 685 male adolescents (16–19 years) from the Swedish military conscription register from 1972 to 1994. Cardiorespiratory fitness (bicycle ergometer test), muscular strength (knee extension strength), and BMI were measured during the conscription examination. Information about disability pension due to CVD was retrieved from the Social Insurance Agency during a mean follow-up of 28.4 years. Cardiorespiratory fitness was strongly and inversely associated with later risk of chronic CVD disability for all investigated causes. The association was particularly strong for ischaemic heart diseases (hazard ratio 0.11, 95% confidence interval 0.05–0.29 for highest vs. lowest fitness-quintiles). Furthermore, overweight/obesity were associated with CVD disability for all investigated causes. Conversely, associations of muscular strength with CVD disability were generally weak.

          Conclusions

          This study provides evidence for associations between low levels of cardiorespiratory fitness and obesity with later risk of chronic disability due to CVD. Preventive actions may begin at young ages and include promotion of cardiorespiratory fitness and healthy body weight.

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          Most cited references24

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          Physical fitness in childhood and adolescence: a powerful marker of health.

          This review aims to summarize the latest developments with regard to physical fitness and several health outcomes in young people. The literature reviewed suggests that (1) cardiorespiratory fitness levels are associated with total and abdominal adiposity; (2) both cardiorespiratory and muscular fitness are shown to be associated with established and emerging cardiovascular disease risk factors; (3) improvements in muscular fitness and speed/agility, rather than cardiorespiratory fitness, seem to have a positive effect on skeletal health; (4) both cardiorespiratory and muscular fitness enhancements are recommended in pediatric cancer patients/survivors in order to attenuate fatigue and improve their quality of life; and (5) improvements in cardiorespiratory fitness have positive effects on depression, anxiety, mood status and self-esteem, and seem also to be associated with a higher academic performance. In conclusion, health promotion policies and physical activity programs should be designed to improve cardiorespiratory fitness, but also two other physical fitness components such us muscular fitness and speed/agility. Schools may play an important role by identifying children with low physical fitness and by promoting positive health behaviors such as encouraging children to be active, with special emphasis on the intensity of the activity.
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            Severe obesity in children and adolescents: identification, associated health risks, and treatment approaches: a scientific statement from the American Heart Association.

            Severe obesity afflicts between 4% and 6% of all youth in the United States, and the prevalence is increasing. Despite the serious immediate and long-term cardiovascular, metabolic, and other health consequences of severe pediatric obesity, current treatments are limited in effectiveness and lack widespread availability. Lifestyle modification/behavior-based treatment interventions in youth with severe obesity have demonstrated modest improvement in body mass index status, but participants have generally remained severely obese and often regained weight after the conclusion of the treatment programs. The role of medical management is minimal, because only 1 medication is currently approved for the treatment of obesity in adolescents. Bariatric surgery has generally been effective in reducing body mass index and improving cardiovascular and metabolic risk factors; however, reports of long-term outcomes are few, many youth with severe obesity do not qualify for surgery, and access is limited by lack of insurance coverage. To begin to address these challenges, the purposes of this scientific statement are to (1) provide justification for and recommend a standardized definition of severe obesity in children and adolescents; (2) raise awareness of this serious and growing problem by summarizing the current literature in this area in terms of the epidemiology and trends, associated health risks (immediate and long-term), and challenges and shortcomings of currently available treatment options; and (3) highlight areas in need of future research. Innovative behavior-based treatment, minimally invasive procedures, and medications currently under development all need to be evaluated for their efficacy and safety in this group of patients with high medical and psychosocial risks.
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              Predictive validity of health-related fitness in youth: a systematic review.

              The objective of the present systematic review was to investigate whether physical fitness in childhood and adolescence is a predictor of cardiovascular disease (CVD) risk factors, events and syndromes, quality of life and low back pain later in life. Physical fitness-related components were: cardiorespiratory fitness, musculoskeletal fitness, motor fitness and body composition. Adiposity was considered as both exposure and outcome. The results of 42 studies reporting the predictive validity of health-related physical fitness for CVD risk factors, events and syndromes as well as the results of five studies reporting the predictive validity of physical fitness for low back pain in children and adolescents were summarised. Strong evidence was found indicating that higher levels of cardiorespiratory fitness in childhood and adolescence are associated with a healthier cardiovascular profile later in life. Muscular strength improvements from childhood to adolescence are negatively associated with changes in overall adiposity. A healthier body composition in childhood and adolescence is associated with a healthier cardiovascular profile later in life and with a lower risk of death. The evidence was moderate for the association between changes in cardiorespiratory fitness and CVD risk factors, and between cardiorespiratory fitness and the risk of developing the metabolic syndrome and arterial stiffness. Moderate evidence on the lack of a relationship between body composition and low back pain was found. Due to a limited number of studies, inconclusive evidence emerged for a relationship between muscular strength or motor fitness and CVD risk factors, and between flexibility and low back pain.
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                Author and article information

                Journal
                Eur Heart J
                Eur. Heart J
                eurheartj
                European Heart Journal
                Oxford University Press
                0195-668X
                1522-9645
                14 April 2020
                09 November 2019
                09 November 2019
                : 41
                : 15 , Focus Issue on Sports Cardiology
                : 1503-1510
                Affiliations
                [1 ] PROmoting FITness and Health through physical activity research group (PROFITH), Sport and Health University Research Institute (iMUDS), Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada , Granada 18071, Spain
                [2 ] Department of Medical and Health Sciences, Linköping University , Linköping 581 83, Sweden
                [3 ] Department of Biosciences and Nutrition, Karolinska Institutet , NOVUM, Huddinge 141 83, Sweden
                [4 ] Department of Public Health Sciences, Karolinska Institutet , Stockholm 171 77, Sweden
                [5 ] Centre for Epidemiology and Community Medicine, Stockholm County Council , Stockholm 113 65, Sweden
                [6 ] Institute for Innovation & Sustainable Development in Food Chain, Public University of Navarra, Campus de Arrosadía , Tajonar 22, Pamplona 31006, Spain
                [7 ] Department of Cardiovascular Diseases, John Ochsner Heart and Vascular Institute, Ochsner Clinical School-the University of Queensland School of Medicine , New Orleans, LA 70121, USA
                Author notes
                Corresponding author. Tel: +46730263858, Email: hanna.henriksson@ 123456liu.se
                Author information
                http://orcid.org/0000-0003-3571-1497
                http://orcid.org/0000-0003-2482-7048
                http://orcid.org/0000-0001-8155-7406
                http://orcid.org/0000-0003-0616-7779
                http://orcid.org/0000-0002-4334-3287
                http://orcid.org/0000-0002-7548-7138
                Article
                ehz774
                10.1093/eurheartj/ehz774
                7154806
                31710669
                be413355-14b2-4af3-ba18-0a9169b61836
                © The Author(s) 2019. Published by Oxford University Press on behalf of the European Society of Cardiology.

                This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

                History
                : 18 April 2019
                : 21 August 2019
                : 23 October 2019
                Page count
                Pages: 9
                Funding
                Funded by: Karolinska Institutet, DOI 10.13039/501100004047;
                Award ID: 2018-02043
                Funded by: Swedish Society of Medicine and the County Council of Östergötland;
                Funded by: Henning and Johan Throne-Holst Foundation;
                Funded by: Strategic Research Area Health Care Science;
                Funded by: Karolinska Institutet/Umeå University;
                Funded by: Henning and Johan Throne-Holst Foundation;
                Funded by: European Union’s Horizon 2020;
                Award ID: 667 302
                Funded by: University of Granada, DOI 10.13039/501100006393;
                Funded by: Unit of Excellence on Exercise and Health;
                Funded by: UCEES;
                Funded by: European Regional Development Fund, DOI 10.13039/501100008530;
                Award ID: SOMM17/6107/UGR
                Funded by: SAMID III network, RETICS;
                Funded by: ISCIII-Sub-Directorate General for Research Assessment and Promotion;
                Funded by: ERDF, DOI 10.13039/501100008530;
                Award ID: RD16/0022
                Funded by: EXERNET Research Network on Exercise and Health in Special Populations;
                Award ID: DEP2005-00046/ACTI
                Categories
                Clinical Research
                Prevention and Epidemiology
                Editor's Choice

                Cardiovascular Medicine
                cardiovascular disease,cardiorespiratory fitness,muscular strength,obesity,disability

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