Please select the eligibility criteria that correspond to the clinical trial below.
Title: Effects of Exercise Training on Non-invasive Cardiac Measures in Patients Undergoing Long-term Hemodialysis: A Randomized Controlled Trial
Brief Summary: Background: The impact of the known non-invasive cardiac indices for identification of hemodialysis (HD) patients at high-risk for sudden cardiac death (SCD) has not been evaluated.

Patients: Fifty-nine HD patients were randomized into 2 groups. Thirty of them (group A-aged 54.6±8.9 years) participated in a supervised training program with stationary bicycles during their HD sessions (3/weekly) for 10 months, while the rest (group B-aged 53.2±6.1 years) remained untrained and were used as controls.

Study hypothesis: Exercise training will affect most of the non-invasive cardiac markers of SCD and the total score positively.

Method: At entry, as well as at the end of the study all subjects underwent a cardiopulmonary exercise testing (estimation of aerobic capacity-VO2peak), an echocardiographic study (LV ejection fraction -LVEF evaluation), an ambulatory 24-hour Holter monitoring for cardiac autonomic nervous system activity evaluation by time- and frequency- domain heart rate variability (HRV) calculation (measurement of SDNN, mean RR and low to high frequency ratio-LF/HF), a signal-averaged ECG (late potentials-LP documentation) and a submaximal exercise test for microvolt-T-wave alternans (TWA) detection.


Options:
A: Inclusion Criteria:

* Adult patients male or female (Age \> 21 years)
* Minimum dialysis vintage of 6 months
* Stable on hemodialysis
* Minimum Hemoglobin level of 10 g/dL
* Blood access capable of delivering the blood flow rate greater than 250 mL/min
* Preserved left ventricular ejection fraction (\>50%) on prior imaging study
* Able to complete a 6min-walk-test without abnormal physiological response, excessive fatigue, or musculoskeletal discomfort

Exclusion Criteria:

* History of recurring or persistent hypotension in past 3 months
* Pregnant woman
* Severely Hypertensive patients (SBP \> 180 mmHg and/or DBP \> 115 mmHg)
* History of recent myocardial infarction or unstable angina (within past 6 months)
* Significant valvular disease, i.e. severe aortic stenosis and moderate-severe mitral regurgitation.
* Patients with end stage organ disease e.g. COPD, recent or debilitating CVA
* Patient with recent stroke (within past 6 months)
* Anemic patients
* History of known arrhythmia
* Participation in another clinical intervention trial
* Moderate to severe osteoarthritis of knee(s)
* Unable to consent
B: Inclusion Criteria:

* Clinically stable hemodialysis patients with positive diagnosis in IRLSS questionnaire for the RLS will be eligible to participate. Entry criteria included being on chronic hemodialysis for six months, able to perform an exercise training, with dialysis delivery (KT/V) \> 1.1.

Exclusion Criteria:

* Patients were excluded from the study if they were diagnosed with neuropathies or reasons for being in a catabolic state (including malignancies, HIV and opportunistic infections, active inflammation), within 3 months prior to the start of the study. In addition patients treated with drugs recommended for the treatment of RLS as well as patients with Parkinson's disease or untreated depression will be also excluded.
C: Inclusion Criteria:

* Patients aged \>18 years, treated by hemodialysis since more than 3 months
* Patients considered to be in a clinical stable state, defined as the absence of acute disease or hospitalization during the last month prior to study begin
* Patients fulfilling the diagnostic criteria of protein energy wasting according to the definition proposed by the International Society of Renal Nutrition and Metabolism (ISRNM)
* Patients having signed the informed consent for the study participation
* Patients covered by medical insurance

Exclusion Criteria:

* Medical contraindication or inability to perform physical exercise
* Inadequate dialysis (KT/V\< 1.2)
* Poor hemodynamic tolerance of dialysis
* Systemic inflammation (CRP \>20 mg/l)
* Pregnancy
* Major trust
D: Inclusion Criteria:

* on HD for at least 6 months
* in sinus rhythm
* able to reach a sufficient workload during ergometry

Exclusion Criteria:

* with bundle branch block
* unstable hypertension
* diabetes mellitus
* severe congestive heart failure
* recent myocardial infarction
* unstable angina

Answer: D