IS092 Noninvasive Assessment of Human Muscle Vasodilation During Exercise and Reactive Hyperemia Using Nearinfrared Spectroscopy and Its Relation to Exercise Tolerance
スポンサーリンク
概要
- 論文の詳細を見る
- 社団法人日本循環器学会の論文
- 2000-03-01
著者
-
Ajisaka Ryuichi
筑波大学 人間総合科学研究科スポーツ医学
-
Yamaguchi Iwao
Departments of Internal Medicine, Surgery, Pharmacology, University of Tsukuba
-
Arai Emi
Cardiovascular Division, Graduate School of Comprehensive Human Sciences, University of Tsukuba
-
Nishina Hidetaka
Department of Cardiology, Tsukuba Medical Center Hospital
-
Watanabe Shigeyuki
Department of Internal Medicine University of Tsukuba
-
Nakajima Hideki
筑波大学附属病院 検査部
-
Toyama Masahiro
Department Of Materials Engineering School Of Engineering The University Of Tokyo
-
Nishina Hidetaka
Department Of Cardiology Tsukuba Medical Center Hospital
-
Nishina Hidetaka
筑波大学 人間総合科学研究科循環器内科
-
Takeyasu Noriyuki
Department of Cardiology, Graduate School of Comprehensive Human Sciences, University of Tsukuba
-
Eda Kazuhiko
Division of Cardiology, Graduate School of Comprehensive Human Sciences, University of Tsukuba
-
Eda Kazuhiko
Division Of Cardiology Graduate School Of Comprehensive Human Sciences University Of Tsukuba
-
Saito Takumi
Department Of Cardiology Moriya General Daiichi Hospital
-
Sakamoto Kazuhiko
Department of Environmental Science and Technology, Graduate School of Science and Engineering, Sait
-
Sakamoto Kazuhiko
Department Of Cardiovascular Medicine Tohoku University Graduate School Of Medicine
-
Takeyasu Noriyuki
Cardiovascular Division Graduate School Of Comprehensive Human Sciences University Of Tsukuba
-
Arai Emi
Department of Cardiology, Graduate School of Comprehensive Human Sciences, University of Tsukuba
-
Ishiyama Miki
Department of Cardiology, Graduate School of Comprehensive Human Sciences, University of Tsukuba
-
Ajisaka Ryuichi
Institute Of Health And Sport Sciences University Of Tsukuba
-
Eda Kazuhiko
Department of Internal Medicine, Institute of Clinical Medicine, University of Tsukuba
-
Ishii Chikako
University of Yamaguchi
-
Ishii Chikako
Department of Internal Medicine, Institute of Clinical Medicine, University of Tsukuba
-
Ishiyama Miki
Department Of Cardiology Graduate School Of Comprehensive Human Sciences University Of Tsukuba
-
Watanabe Shigeyuki
Department Of Clinical Cardiology University Of Tsukuba
-
Arai Emi
Cardiovascular Division Graduate School Of Comprehensive Human Sciences University Of Tsukuba
-
Ajisaka Ryuichi
Institute Of Clinical Medicine University Of Tsukuba
-
Toyama Masahiro
Department Of Cardiology Institute Of Clinical Medicine University Of Tsukuba
-
Yamaguchi Iwao
Department Of Cardiology
-
Sakamoto Kazuhiko
Department Of Applied Chemistry Faculty Of Engineering Saitama Universtiy
-
Nishina Hidetaka
Department Of Cardiology Tsukuba Medical Center
-
Nakajima Hideki
Department Of Cardiology Tsukuba Medical Center
-
Yamaguchi Iwao
Department of Applied Chemistry, Faculty of Engineering, Osaka University
-
Watanabe Shigeyuki
Department of Cardiology, Mito Kyodo General Hospital, University of Tsukuba
-
Eda Kazuhiko
Department of Cardiology, Mito Kyodo General Hospital
-
Watanabe Shigeyuki
Department of Cardiology, Faculty of Medicine, University of Tsukuba
関連論文
- Acute Exercise Increases Systemic Arterial Compliance after 6-Month Exercise Training in Older Women
- -0902- ENDOTHELIN RECEPTOR SUBTYPES IN THE PULMONARY ARTERIAL SMOOTH MUSCLES AND BRONCHIAL SMOOTH MUSCLES IN HUMANS(PROCEEDINGS OF THE 59th ANNUAL SCIENTIFIC MEETING OF THE JAPANESE CIRCULATION SOCIETY)
- PERIOPERATIVE OXYGEN EXTRACTION RATIO(O_2ER) IS RELATED TO PULMONARY CIRCULATION AND RIGHT VENTRICULAR(RV) FUNCTION IN PULMONARY RESECTION
- CHARACTERISTICS AND ONSETMECHANISMS OF ATRIAL FIBRILLATION(AF)AFTER PULMONARY SURGERY
- PJ-623 Frequency and the Treatment of the Clinical Arrhythmias in Patients Having Cardiac Resynchronization Therapy for End-stage Congestive Heart Failure(Arrhythmia, therapy-19 (A) PJ105,Poster Session (Japanese),The 70th Anniversary Annual Scientific Me
- PE-231 Efficacy and the Safety of Electroanatomical Mapping System for the Extensive Pulmonary Vein Isolation(Arrhythmia, therapy-12 (A) PE39,Poster Session (English),The 70th Anniversary Annual Scientific Meeting of the Japanese Circulation Society)
- PE-138 Usefulness of the Esophageal Position by Electroanatomical Mapping System before Extensive Pulmonary Vein Isolation in Patient with Atrial Fibrillation(Arrhythmia, diagnosis/pathophysiology/EPS-8 (A) PE23,Poster Session (English),The 70th Anniversa
- Sinus Rhythm High-Density Substrate Mapping Accurately Detects Critical Isthmus of Ventricular Tachycardia Reentry Circuit in Patients with Underlying Heart Disease(Arrhythmia, Non-pharmacological Therapy 8 (A), The 69th Annual Scientific Meeting of the J
- Characteristics of Antegrade Slow Pathway Conduction Before and After Catheter Ablation in Patients with Fast-slow Uncommon Atrioventricular Nodal Reentrant Tachycardia(Arrhythmia, Non-pharmacological Therapy 6 (A), The 69th Annual Scientific Meeting of t
- Characteristics of Induced Ventricular Tachyarrhythmias before Degenerating into Ventricular Fibrillation in Brugada Syndrome(Arrhythmia, Diagnosis/Pathophysiology/EPS 9 (A), The 69th Annual Scientific Meeting of the Japanese Circulation Society)
- The Long Term Clinical Outcome after the Complete Creation of a Cavo-tricuspid Isthmus Blockline in Patients with Common Atrial Flutter(Arrhythmia, Non-pharmacological Therapy 1 (A), The 69th Annual Scientific Meeting of the Japanese Circulation Society)
- PJ-623 Frequency and the Treatment of the Clinical Arrhythmias in Patients Having Cardiac Resynchronization Therapy for End-stage Congestive Heart Failure(Arrhythmia, therapy-19 (A) PJ105,Poster Session (Japanese),The 70th Anniversary Annual Scientific Me
- PE-138 Usefulness of the Esophageal Position by Electroanatomical Mapping System before Extensive Pulmonary Vein Isolation in Patient with Atrial Fibrillation(Arrhythmia, diagnosis/pathophysiology/EPS-8 (A) PE23,Poster Session (English),The 70th Anniversa
- Sinus Rhythm High-Density Substrate Mapping Accurately Detects Critical Isthmus of Ventricular Tachycardia Reentry Circuit in Patients with Underlying Heart Disease(Arrhythmia, Non-pharmacological Therapy 8 (A), The 69th Annual Scientific Meeting of the J
- Characteristics of Antegrade Slow Pathway Conduction Before and After Catheter Ablation in Patients with Fast-slow Uncommon Atrioventricular Nodal Reentrant Tachycardia(Arrhythmia, Non-pharmacological Therapy 6 (A), The 69th Annual Scientific Meeting of t
- PE-138 Usefulness of the Esophageal Position by Electroanatomical Mapping System before Extensive Pulmonary Vein Isolation in Patient with Atrial Fibrillation(Arrhythmia, diagnosis/pathophysiology/EPS-8 (A) PE23,Poster Session (English),The 70th Anniversa
- PJ-254 'Injury Current' in Patients with coronary Stenosis Can be Visualized by Magnetocardiography, and Continues to Exist Early after Coronary Revascularization(Myocardial ischemia/reperfusion, basic/clinical-4, The 71st Annual Scientific Meeting of the
- PE-357 Radionuclide Ventriculographic Evaluation of the Effect of Cardiac Resynchronization Therapy on Acute and Chronic Phase(Nuclear cardiology-4, The 71st Annual Scientific Meeting of the Japanese Circulation Society)
- PE-151 Detection of the 'Injury Current' of Ischemic Myocardium by High-Tc-SQUID Magnetocardiography(ECG/Body surface potential mapping/Holter-4, The 71st Annual Scientific Meeting of the Japanese Circulation Society)
- PJ-267 Radionuclide Ventriculographic Evaluation of the Effect by Cardiac Resynchronization Therapy(Nuclear cardiology-7 (I) PJ45,Poster Session (Japanese),The 70th Anniversary Annual Scientific Meeting of the Japanese Circulation Society)
- PJ-186 Effects of Tetrahydrobiopterin on Exercise Tolerance, Vascular Function, and Exercise Hyperemia in Patients with Coronary Artery Disease (CAD)(Exercise test/Cardiac rehabilitation-4 (IHD) PJ31,Poster Session (Japanese),The 70th Anniversary Annual S
- PJ-100 Proteome Analysis of Plasma from Coronary Artery in Patients with Acute Coronary Syndrome(Molecular biology, vascular-3 (H) PJ17,Poster Session (Japanese),The 70th Anniversary Annual Scientific Meeting of the Japanese Circulation Society)
- Detection of the Patients with Coronary Stenosis by High-Tc-SQUID Magnetocardiogram(ECG/Body Surface Potential Mapping/Holter 1 (A), The 69th Annual Scientific Meeting of the Japanese Circulation Society)
- Efficacy and Safety of Intravenous Amiodarone Infusion in Japanese Patients with Hemodynamically Compromised Ventricular Tachycardia or Ventricular Fibrillation
- Coagulofibrynolytic Factors Activation is well Correlated with Moya-Moya Echo Severity of Limb Vein in Preganant Women(Thrombosis/Thrombolysis 3 (IHD), The 69th Annual Scientific Meeting of the Japanese Circulation Society)
- Frequent Saturation Dips at Daytime Observed in SpO2 Night-Dippers
- Pseudonormalization of pulse wave velocity in patients with arteriosclerosis obliterans
- Objective evaluation of intermittent claudication by near-infrared spectroscopy
- PJ-872 Effect of Alpha-glucosidase Inhibitor Miglitol on Anaerobic Threshold and Metabolism During Exercise(Exercise test / Cardiac rehabilitation(08)(H),Poster Session(Japanese),The 72nd Annual Scientific Meeting of the Japanese Circulation Society)
- A Novel Mutation Associated With Jervell and Lange-Nielsen Syndrome in a Japanese Family
- Clinical evaluation of dynamic intravenous coronary angiography using synchrotron radiation
- -P33- ASSESSMENT OF THE VENTRICULAR CONTRACTION SEQUENCE IN WOLFF-PARKINSON-WHITE SYNDROME BY DIGITAL SUBTRACTION ANGIOGRAPHY : ECG, Mapping : FREE COMMUNICATIONS(I) : PROCEEDINGS OF THE 51th ANNUAL SCIENTIFIC MEETING OF THE JAPANESE CIRCULATION SOCIETY
- RIGHT VENTRICULAR FUNCTION DURING EXERCISE IN ISCHEMIC HEART DISEASE : Exercise Test (II) : FREE COMMUNICATIONS (VI) : PROCEEDINGS OF THE 49th ANNUAL SCIENTIFIC MEETING OF THE JAPANESE CIRCULATION SOCIETY
- Assessing Muscle Vasodilation Using Near-Infrared Spectroscopy in Cardiac Patients
- Vascular Dysfunction is a Common Finding in Patients with Poor Exercise Capacity and Sympathetic Dysfunction(Clinical Importance of Endothelial Function Testing as a Marker of Cardiovascular Disease, The 69th Annual Scientific Meeting of the Japanese Circ
- OJ-347 Relation between Muscle Function and Early Dynamics of Oxygen Uptake at the Onset of Constant Workload Exercise(Exercise Test/Cardiac Rehabilitation 4 (IHD) : OJ42)(Oral Presentation (Japanese))
- P1-37 Effects of endurance training on free radical scavenging activities in middle-aged and elderly human skeletal muscle : SAT project 141(The Proceedings of the 12th Annual Meetings of Japan Society of Exercise and Sports Physiology)
- 28) PATHOPHYSIOLOGICAL SIGNIFICANCE OF LEFT VENTRICULAR HYPERTROPHY IN DILATED CARDIOMYOPATHY
- 23) RELATIONSHIP BETWEEN HYPERTENSIVE CARDIAC HYPERTROPHY AND HYPERTROPHIC CARDIOMYOPATHY
- 26)EFFECT OF NIFEDIPINE ON LEFT VENTRICULAR DIASTOLIC PERFORMANCE IN PATIENTS WITH DILATED CARDIOMYOPATHY : A STUDY OF THE RESPONSE TO ISOMETRIC HANDGRIP EXERCISE : THE 8th CONFERENCE ON CARIDIOMYOPATHY
- NEW METHOD FOR ANALYZING CARDIAC WALL MOTION BY DIGITAL SUBTRACTION ANGIOGRAPHY : ISCHEMIC HEART DISEASE : Ischemic Heart Disease (V) : FREE COMMUNICATIONS (V) : PROCEEDINGS OF THE 49th ANNUAL SCIENTIFIC MEETING OF THE JAPANESE CIRCULATION SOCIETY
- PATHOPHYSIOLOGY OF CARDIAC HYPERTROPHY IN DILATED CARDIOMYOPATHY : Myocardial Disease (III) : FREE COMMUNICATIONS (III) : PROCEEDINGS OF THE 49th ANNUAL SCIENTIFIC MEETING OF THE JAPANESE CIRCULATION SOCIETY
- 20)BETA-ADRENERGIC RESPONSES IN CLINICAL CARDIAC HYPERTROPHY OF SYSTEMIC HYPERTENSION AND OF HYPERTROPHIC CARDIOMYOPATHY : THE 7th CONFERENCE ON CARDIOMYOPATHY
- A CASE OF DILATED CARDIOMYOPATHY WITH SLIGHT HYPOPLASIA OF THE LEFT ANTERIOR DESCENDING ARTERY DEMONSTRATED BY CORONARY ANGIOGRAPHY : THE 5th CONFERENCE ON CARDIOMYOPATHY
- DETECTION OF MITRAL REGURGITATION BY LEFT HEART CONTRAST ECHOCARDIOGRAPHY USING INTRAVENOUS INJECTION OF PERFLUOROCHEMICALS EMULSION : PROCEEDINGS OF THE 47th ANNUAL SCIENTIFIC MEETING OF THE JAPANESE CIRCULATION SOCIETY : Echocardiography (II)
- PLASMA NOREPINEPHRINE CONCENTRATION DURING EXERCISE IN PATIENTS WITH DIFFERENT TYPES OF HYPERTROPHIC CARDIOMYOPATHY : PROCEEDINGS OF THE 47th ANNUAL SCIENTIFIC MEETING OF THE JAPANESE CIRCULATION SOCIETY : Pathophysiology
- 23) GUIDELINES IN DAILY LIFE FOR PATIENTS WITH HYPERTROPHIC CARDIOMYOPATHY TO PREVENT SUDDEN DEATH
- In vivo Direct Nitric Oxide (NO) Measurement in the Rat Abdominal Aorta Using Novel Clinically Practicable NO Sensor-tipped Catheter(Atherosclerosis, Basic 6 (IHD), The 69th Annual Scientific Meeting of the Japanese Circulation Society)
- Changes of Left Ventricular Systolic and Diastolic Functions after ATP Stress Assessed by Stress/rest 99m-Tc MIBI Gated SPECT(Nuclear Cardiology 7 (I), The 69th Annual Scientific Meeting of the Japanese Circulation Society)
- Clinical Significance of the Lung Uptake of Tc-99m Tetrofosmin in Patients with Coronary Artery Disease(Nuclear Cardiology 1 (I), The 69th Annual Scientific Meeting of the Japanese Circulation Society)
- PJ-156 Tetrahydrobiopterin Improves Exercise Tolerance and Endothelium-Dependent Vasodilation in Patients with Coronary Artery Disease (CAD)(Endothelium/NO 3 (H) : PJ26)(Poster Session (Japanese))
- PE-383 Tetrahydrobiopterin (BH4) improves the early dynamics of oxygen uptake at the onset of exercise in patients with coronary artery disease(Exercise Test/Cardiac Rehabilitation 7 (IHD) : PE65)(Poster Session (English))
- OJ-350 The mechanism of lactate production during exercise in patients with cardiac disease(Exercise Test/Cardiac Rehabilitation 4 (IHD) : OJ42)(Oral Presentation (Japanese))
- Stress-Induced Deep T Wave Inversion Is a Marker of the Stenosis of Right Coronary (RCA) or Left Circumflex Coronary (LCX) Arteries
- Temporal Changes of Vascular Function and Exercise Tolerance in the Patients with Heart Disease
- The Contributions of Muscle Vasodilation and Cardiac Function to the Exercise Performance in Patients with Left Ventricular Dysfunction
- Diastolic dysfunction persists longer than systolic abnormality after a transient myocardial ischemia
- Both the increase in blood flow and the muscle function to utilize oxygen contribute in determining the aerobic exercise capacity
- Hemodynamic and Thermal Responses to a 30-Minute Constant-Workload Aerobic Exercise in Middle- or Old-Aged Patients With Cardiovascular Diseases
- IS092 Noninvasive Assessment of Human Muscle Vasodilation During Exercise and Reactive Hyperemia Using Nearinfrared Spectroscopy and Its Relation to Exercise Tolerance
- Relationship Between Normalization of Negative T Waves on Exercise ECG and Residual Myocardial Viability in Patients With Previous Myocardial Infarction and no Post-Infarction Angina
- P304 CARDIOVASCULAR MANIFESTATIONS OF THYROID HEART AND THEIR LATE CLINICAL COURSE
- P041 Muscle Metaboreflex During Dynamic Exercise In Patients with Chronic Heart Failure
- Influence of Adiponectin Gene Polymorphism SNP276 (G/T) on Adiponectin in Response to Exercise Training
- PJ-042 Effects of Athletic Strength- and Endurance-exercise Training on Aortic Stiffness and Plasma Endothelin-1 Concentration in Young Humans(Exercise test/Cardiac rehabilitation-5 (IHD) PJ7,Poster Session (Japanese),The 70th Anniversary Annual Scientifi
- PE-581 Arterial Stiffness and Competitive Sports Career in Adolescent Endurance- and Strength-trained Athletes(Exercise test/Cardiac rehabilitation-2 (IHD) PE101,Poster Session (English),The 70th Anniversary Annual Scientific Meeting of the Japanese Circu
- 1B-17 Gender differences in skeletal muscle fatigability during intermittent handgrip exercise and post-exercise brachial artery hyperemia(Cardiovascular Function, The Proceedings of the 13th Annual Meetings of Japan Society of Exercise and Sports Physiol
- 1B-16 Strength-trained athletes cause to acceleration of recovery in heart rate after exercise(Cardiovascular Function, The Proceedings of the 13th Annual Meetings of Japan Society of Exercise and Sports Physiology July 30-31, (Tokyo))
- Arterial Stiffness, Physical Activity, and Atrial Natriuretic Peptide Gene Polymorphism in Older Subjects
- OJ-038 Polymorphism in Endothelin-related Genes Affects Exercise-induced Improvements of Arterial Stiffness in the Japanese Older Subjects(Exercise test/Cardiac rehabilitation-2, The 71st Annual Scientific Meeting of the Japanese Circulation Society)
- THE EFFECTS OF DAILY PHYSICAL ACTIVITY ON THE AGE-RELATED CAROTID ARTERIA STIFFENING IN MIDDLE-AGED AND ELDERLY PEOPLE(Proceedings of The 8^ Asian Federation of Sports Medicine Congress 2005 Tokyo)
- Age-Related Reduction of Systemic Arterial Compliance Relates to Decreased Aerobic Capacity during Sub-Maximal Exercise
- Age-Related Reduction of Systemic Arterial Compliance Induces Excessive Myocardial Oxygen Consumption during Sub-Maximal Exercise
- Effect of Arterial Lumen Enlargement on Carotid Arterial Compliance in Normotensive Postmenopausal Women
- Moderate Regular Exercise Increases Basal Production of Nitric Oxide in Elderly Women
- P040 "WARM-UP" PHENOMENON IN CARDIAC PATIENTS
- P037 RELATIONSHIP BETWEEN CO_2 STORAGE AND O_2 DEFICIT IN INCREMENTAL EXERCISE
- P034 DOBUTAMINE SLOWS TRANSIENT VENTILATORY AND GAS EXCHANGE RESPONSES AT THE ONSET OF EXERCISE IN HEALTH MEN
- 0015 THE GENDER DIFFERENCES IN LEFT VENTRICULAR FUNCTION AND MYOCARDIAL ISCHEMIA IN PATIENTS WITH CORONARY ARTERY DISEASE
- 0221 EFFECT OF LONG-TERM, LOW-LEVEL HOME CARDIAC REHABILITATION ON MYOCARDIAL FATTY ACID METABOLISM IN PATIENTS WITH PREVIOUS MYOCARDIAL INFARCTION
- 0219 EVALUATION OF MYOCARDIAL METABOLIC ABNORMALITIES IN PATIENTS WITH SYNDROME X USING ISOPROTERENOL (ISP) STRESS BMIPP MYOCARDIAL SPECT
- 0218 ASSESSMENT OF 'METABOLIC STUNNING' USING DELAYED IMAGING IN ISOPROTERENOL (ISP) STRESS BMIPP MYOCARDIAL SPECT IN PATIENTS WITH CORONARY ARTERY DISEASE
- 1002 Ventilatory, circulatory and metabolic change during aerobic single-stage exercise
- 0707 BLOOD VOLUME AND OXYGENATION DURING EXERCISE IN CEREBRAL TISSUE AND SKELETAL MUSCLE EVALUATED BY NEAR-INFRARED SPECTROSCOPY
- 0501 CHRONIC EFFICIENCY OF ALDOSE REDUCTASE INHIBITOR FOR EXERCISE CAPACITY IN PATIENTS WITH DIABETES MELLITUS : A SINGLE BLIND STUDY
- 0496 The action of blood bicarbonate ion(HCO_3-)to buffer lactate(L) relate to exercise tolerance in patients with left ventricular dysfunction
- 0213 ISOPROTERENOL(ISP)STRESS BMIPP MYOCARDIAL SPECT IN PATIENTS WITH CORONARY ARTERY DISEASE AND SYNDROME X-COMPARED WITH ISP STRESS THALLIUM AND ISP STRESS ECHOCARDIOGRAPEY
- -P541- Usefulness of combined sitting and standing ergometer protocol for exercise stress testing(PROCEEDINGS OF THE 59th ANNUAL SCIENTIFIC MEETING OF THE JAPANESE CIRCULATION SOCIETY)
- -P269- T wave normalization as an index of myocardial viability in infarct area(PROCEEDINGS OF THE 59th ANNUAL SCIENTIFIC MEETING OF THE JAPANESE CIRCULATION SOCIETY)
- -0800- SKIN BLOOD FLOW DURING LEG EXERCISE IN PATIENTS WITH CHRONIC HEART FAILURE(PROCEEDINGS OF THE 59th ANNUAL SCIENTIFIC MEETING OF THE JAPANESE CIRCULATION SOCIETY)
- 222 The effect of 12-wk strength training on muscle recruitment, strength and cross sectional area in elderly women
- OE-044 Total Plasma Homocysteine, Exercise Hyperemia, and Aerobic Exercise Capacity in the Middle-aged or Elderly People(Exercise Test/Cardiac Rehabilitation 1 (IHD) : OE6)(Oral Presentation (English))
- 1B12 The effect of habitual physical activity on age-related changes in central arterial properties
- 1B11 Relationship between systemic arterial compliance and cardiorespiratory fitness : comparison study in elderly and young people(SAT project 104)
- 1B09 Effect of daily physical activity volume and intensity on central arterial compliance in middle and elderly persons : SAT project 106
- The Effects of Low-Intensity Single-Leg Exercise on Regional Arterial Stiffness
- Regular exercise attenuates age-related elevation in plasma endothelin-1 concentration in humans : SAT Project 68
- 125 Non-invasive assessment of cardiac output during exercise : comparison between Modelflow method and Doppler echography method
- Polymorphisms in Control Region of mtDNA Relates to Individual Differences in Endurance Capacity or Trainability
- Alveolar Ventilation and Dead-space Ventilation During Exercise in Patients with Previous Myocardial Infarction