Using the Human Activity Profile to Assess Functional Performance in Heart Failure.

Area of Science:

• Cardiology
• Pulmonology
• Rehabilitation Medicine

Background:

• Heart failure (HF) significantly impacts patients' functional capacity.
• Accurate assessment of functional capacity is crucial for managing HF.
• The Human Activity Profile (HAP) is a tool used to estimate functional capacity.

Purpose of the Study:

• To validate the Human Activity Profile (HAP) for estimating functional capacity in heart failure (HF) patients.
• To examine the association between HAP estimates and 6-Minute Walk Test (6MWT) distances.
• To determine if HAP can differentiate between New York Heart Association (NYHA) functional classes.

Main Methods:

• A cross-sectional study involving 62 clinically stable HF patients (NYHA class I-III).
• Maximal functional capacity measured by peak oxygen uptake (VO2) via cardiopulmonary exercise testing (CPET).
• Peak VO2 estimated using HAP and exercise capacity assessed via 6MWT.

Main Results:

• The HAP's estimated peak VO2 showed a bias of 2.18 mL/kg/min compared to CPET (P = .007), with no agreement via Bland-Altman analysis.
• HAP-estimated peak VO2 demonstrated a moderate association with 6MWT distance (r = 0.62; P < .0001).
• HAP successfully differentiated between NYHA functional classes I, II, and III (P < .05).

Conclusions:

• The HAP's estimated peak VO2 is not fully concordant with the gold-standard CPET measure in HF patients.
• The HAP effectively differentiates NYHA functional classes and correlates with 6MWT distance.
• The HAP is a valuable tool for assessing functional performance in heart failure patients.