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  1. Article ; Online: Previous Exercise Levels and Outcome in Patients with New Atrial Fibrillation: 'Past Achievements Do Not Predict the Future'.

    Lenting, Charlotte J / Wijtvliet, E P J Petra / Koldenhof, Tim / Bessem, Bram / Pluymaekers, Nikki A H A / Rienstra, Michiel / Folkeringa, Richard J / Bronzwaer, Patrick / Elvan, Arif / Elders, Jan / Tukkie, Raymond / Luermans, Justin G L M / Van Kuijk, Sander M J / Tijssen, Jan G P / Van Gelder, Isabelle C / Crijns, Harry J G M / Tieleman, Robert G

    Medicine and science in sports and exercise

    2024  

    Abstract: Introduction: Long-term endurance exercise is suspect to elevate the risk of atrial fibrillation (AF),but little is known about cardiovascular outcome and disease progression in this subgroup of AF patients. We investigated whether previous exercise ... ...

    Abstract Introduction: Long-term endurance exercise is suspect to elevate the risk of atrial fibrillation (AF),but little is known about cardiovascular outcome and disease progression in this subgroup of AF patients. We investigated whether previous exercise level determines cardiovascular outcome.
    Methods: In this post hoc analysis of the RACE 4 randomized trial, we analyzed all patients with a completed questionnaire on sports participation. Three subgroups were made based on lifetime sports hours up to randomization and previous compliance to the international physical activity guidelines. High lifetime hours of high dynamic activity patients were defined as more than 150 min/week of high intense physical exercise. The primary endpoint was a composite of cardiovascular death and hospital admissions.
    Results: A total of 879 patients were analyzed, divided in 203 high lifetime hours of high dynamic activity -, 192 high lifetime hours of activity- and 484 low lifetime hours of activity patients. Over a mean follow up of 36 months (±14), the primary endpoint occurred in 61 out of 203 (30%) high lifetime hours of high dynamic activity -, 53 out of 192 (27%) high lifetime hours of activity- and 135 out of 484 low lifetime hours of activity patients (28%) (p = 0.74). During follow up 42 high lifetime hours of high dynamic activity- (35%), 43 high lifetime hours of activity- (32%) and 104 low lifetime hours of activity patients (34%) with paroxysmal AF received electrical or chemical cardioversion or atrial ablation (p = 0.90).
    Conclusions: In patients included in the RACE 4, there appears to be no relation between previous activity levels and cardiovascular outcome and the need for electrical or chemical cardioversion or atrial ablation. Cardiovascular outcome was driven by AF related arrhythmic events.
    Language English
    Publishing date 2024-04-10
    Publishing country United States
    Document type Journal Article
    ZDB-ID 603994-7
    ISSN 1530-0315 ; 0195-9131 ; 0025-7990
    ISSN (online) 1530-0315
    ISSN 0195-9131 ; 0025-7990
    DOI 10.1249/MSS.0000000000003424
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Interval exercise, but not endurance exercise, prevents endothelial ischemia-reperfusion injury in healthy subjects.

    Seeger, Joost P H / Lenting, Charlotte J / Schreuder, Tim H A / Landman, Thijs R J / Cable, N Timothy / Hopman, Maria T E / Thijssen, Dick H J

    American journal of physiology. Heart and circulatory physiology

    2014  Volume 308, Issue 4, Page(s) H351–7

    Abstract: Endothelial ischemia-reperfusion (I/R) injury importantly contributes to the poor prognosis during ischemic (myocardial) events. Preconditioning, i.e., repeated exposure to short periods of ischemia, effectively reduces endothelial I/R injury. In the ... ...

    Abstract Endothelial ischemia-reperfusion (I/R) injury importantly contributes to the poor prognosis during ischemic (myocardial) events. Preconditioning, i.e., repeated exposure to short periods of ischemia, effectively reduces endothelial I/R injury. In the present study, we examined the hypothesis that exercise has preconditioning effects on endothelial I/R injury. Therefore, we studied whether an acute bout of endurance or interval exercise is able to protect against endothelial I/R injury. In 17 healthy young subjects, we examined changes in brachial artery endothelial function using flow-mediated dilation (FMD) before and after a bout of high-intensity interval exercise, moderate-intensity endurance exercise, or a control intervention. Subsequently, I/R injury was induced by inflation of a blood pressure cuff around the upper arm to 220 mmHg for 20 min and 20 min of reperfusion followed by another FMD measurement. Near-infrared spectrometry was used to examine local tissue oxygenation during exercise. No differences in brachial artery FMD were found at baseline for the three conditions. I/R induced a significant decline in FMD (7.1±2.3 to 4.3±2.3, P<0.001). When preceded by the interval exercise bout, no change in FMD was present after I/R (7.7±3.1 to 7.2±3.1, P=0.56), whereas the decrease in FMD after I/R could not be prevented by the endurance exercise bout (7.8±3.1 to 3.8±1.7, P<0.001). In conclusion, a single bout of lower limb interval exercise, but not moderate-intensity endurance exercise, effectively prevents brachial artery endothelial I/R injury. This indicates the presence of a remote preconditioning effect of exercise, which is selectively present after short-term interval but not continuous exercise in healthy young subjects.
    MeSH term(s) Blood Pressure ; Brachial Artery/physiology ; Endothelium, Vascular/physiology ; Exercise ; Female ; Healthy Volunteers ; Humans ; Ischemic Preconditioning/methods ; Male ; Myocardial Reperfusion Injury/prevention & control ; Oxygen Consumption ; Time Factors ; Vasodilation ; Young Adult
    Language English
    Publishing date 2014-11-21
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 603838-4
    ISSN 1522-1539 ; 0363-6135
    ISSN (online) 1522-1539
    ISSN 0363-6135
    DOI 10.1152/ajpheart.00647.2014
    Database MEDical Literature Analysis and Retrieval System OnLINE

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