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[A correlation study between body mass index and exercise capacity in patients with chronic systolic heart failure]

Shi-jin Gong1, Li Li, Jing Yan

  • 1Intensive Care Unit, Zhejiang Hospital, Hangzhou 310031, China. gsj801@126.com

Zhonghua Nei Ke Za Zhi
|July 17, 2013
PubMed

Insights

Body Mass Index (BMI) is linked to exercise capacity in patients with chronic systolic heart failure. Higher BMI correlated with better oxygen uptake, while lower BMI indicated poorer exercise performance.

Area of Science:

  • Cardiology
  • Exercise Physiology
  • Metabolic Health

Context:

  • Chronic systolic heart failure (CSHF) significantly impairs quality of life and prognosis.
  • Exercise capacity is a crucial indicator of functional status and survival in CSHF patients.
  • The role of Body Mass Index (BMI) in modulating exercise capacity within this population requires further elucidation.

Purpose:

  • To investigate the association between Body Mass Index (BMI) and various measures of exercise capacity in elderly patients diagnosed with chronic systolic heart failure.
  • To identify independent determinants of exercise capacity, including BMI, in this patient cohort.

Summary:

  • A study of 273 elderly patients with CSHF analyzed the relationship between BMI categories (underweight, normal, overweight, obese) and cardiopulmonary exercise test parameters.
  • Results indicated significant correlations: BMI positively associated with peak oxygen uptake (PVO(2)) and oxygen uptake to heart ratio (VO(2)/HR), and inversely with oxygen uptake to body mass ratio (PKVO(2)) and ventilation/carbon dioxide production ratio (VE/VCO(2)).
  • Multiple regression analyses identified BMI as an independent determinant for PKVO(2) and VE/VCO(2), alongside age, sex, and left ventricular ejection fraction (LVEF).

Impact:

  • This research highlights BMI as a significant factor influencing exercise capacity in chronic systolic heart failure patients.
  • Findings suggest that BMI should be considered in the assessment and management of exercise limitations in heart failure.
  • Understanding these associations can aid in personalized treatment strategies to improve functional outcomes in CSHF.
Abstract

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