Lifestyle Intervention In CKD

Inclusion Criteria: * Black race; ≥18 years old * history of hypertension * SBP ≥120 or DBP ≥80 mm Hg average of three measurements at screening visit (per KDIGO recommended SBP target of \<120 mm Hg)48 * Stable anti-hypertensive medication regimen (i.e., no medication changes 4 weeks prior to enrollment); * eGFR of 15-44 ml/min/1.73m2 at screening visit * agreeable to randomization to either of the 2 study arms Exclusion Criteria: * currently receiving or needing dialysis; having received or needing a kidney transplant * acute kidney injury at time of screening * average SBP ≥ 180 mm Hg or DBP ≥ 110 mm Hg at screening * Exaggerated systolic response during ETT (e.g., SBP \>210 mmHg in men or \>190 mmHg in women) * underweight (BMI \<18.5 kg/m2) * planned weight loss surgery in 1 year * a score of 27 or higher on the BP medication adherence scale * cardiac condition that would preclude participation in aerobic exercise training, including severe ischemic heart disease (CCS Class 3 or 4 angina or evidence of ischemia at \<85% heart rate reserve on screening treadmill testing), severe heart failure (NYHA Class 3 or 4), high grade arrhythmias, severe valvular heart disease * severe asthma or chronic obstructive lung disease * musculoskeletal or neurologic conditions that would preclude participation in aerobic exercise training * a major psychiatric disorder * illicit drug abuse * current alcohol consumption \>14 drinks/week for men and \>7 drinks/week for women * pregnant or planned pregnancy within 1 year * gastric bypass surgery within the last 2 years * a life-limiting comorbid medical condition, such as cancer. * physical limitation, gait instability, or need for continuous weight-bearing support that, in the opinion of study staff, would prevent safe completion of exercise treadmill testing