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All Journal Indonesian Journal of Cardiology
Adhantoro Rahadyan
Departement of Cardiology and Vascular Medicine, Faculty of Medicine, University of Indonesia National Cardiovascular Center “Harapan Kita”, Jakarta, Indonesia
Health Professions Medicine & Pharmacology

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Hubungan Morfologi Ventrikel Kiri Orang Terlatih dengan Respons Hipoksia di Ruang Udara Bertekanan Rendah Adhantoro Rahadyan; Andang H Joesoef; Dolly R.D Kaunang
Jurnal Kardiologi Indonesia Vol. 29, No. 2 Mei - Agustus 2008
Publisher : The Indonesian Heart Association

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30701/ijc.v29i2.188

Abstract

Background. The higher the altitude, the higher the risk to hypoxia exposure. Good fitness status of airplane pilot has been thought of great importance to encounter hypoxic risk. Meanwhile, intensive endurance training results in increase of left ventricular mass and change of cardiac function due to down regulation of beta adrenergic receptor. It is not clear whether the difference in myocardial morphology due to endurance training will cause difference tolerance in hypoxia responses.Objectives. To compare hypoxia response of trained and untrained men and to investigate association of left ventricle morphology and hypoxia responses.Methods. This is a cross-sectional study involving 128 trained and 25 untrained men. They underwent medical examination in Saryanto Institute of Aerospace Medicine, Jakarta. Echocardiography and treadmill test ex-amination were performed. The time of useful consciousness (TUC) was measured using 25,000 feet hypobaric stimulation chamber.Results. Six subjects were excluded due to incomplete data. The mean age of trained men was 22 ± 1.0 years. TUC of trained (n=122) and untrained (n=25) men were 232 ± 64 sec and 260 ± 51 sec, respectively (p=0.01). To evaluate for association between echocardiographic parametric of ventricle morphology and TUC, all subjects were divided into TUC < 4 min and TUC = 4 min. Parameters related to TUC are LVEDD and LVMI. TUC < 4 min related to larger LVEDD and LVMI. Conclusion. Trained men had shorter TUC compared to untrained men. Shorter TUC related to larger LVEDD and LVMI.
Profil Pemulihan Laju Jantung Orang Terlatih Adhantoro Rahadyan; Yasmin Tajoedin; Basuni Radi
Jurnal Kardiologi Indonesia Vol. 29, No. 1 Januari - April 2008
Publisher : The Indonesian Heart Association

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30701/ijc.v29i1.198

Abstract

Background. A faster recovery of heart rate after exercise has long been associated with higher level of fitness and prognosis. Recent studies have suggested that the rate in which heart rate recovers from exercise or heart rate recovery (HRR) is mediated by autonomic factors, particularly the rate at which vagal tone is reactivated. Several studies were published addressing the diagnostic and prognostic utility of HRR in patients with cardiac disease. This study was to obtain the value of HRR of well-trained men. Methods. It was an observational study that involved well-trained men who underwent medical examination included treadmill stress test in Saryanto Institute of Aerospace Medicine Jakarta.The value of the HRR was defined as the decrease of heart rate from peak exercise to second minute of recovery period. Results. One hundred and twenty eight subjects participated in the study. Thirty five were excluded due to incomplete data. The mean age was 22 ± 1.0 years. Mean heart rate recovery at 2 minutes was 57 ± 10 beat per minute. No different between those with resting heart rate of less than 60 and more than 60 (55 ± 10 vs 58±10 bpm; p:0.1) and amongs different fitness levels (Q1 vs Q4 : 56 ± 11 vs 59 ± 7 bpm, p:0.3)Conclusion. Heart rate recovery at 2 minutes in well-trained men was 57 ± 10 beat per minute.
Co-Authors Andang H Joesoef Basuni Radi Dolly R.D Kaunang Yasmin Tajoedin