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June 7, 2026Diabetes

Aerobic exercise in obesity yields heterogeneous adaptations with responders showing improved max workload and LVEF.

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Why the study?

Aerobic exercise training is a cornerstone treatment for obesity and type 2 diabetes, but cardiometabolic adaptations vary widely among individuals.

Does 15-week supervised aerobic exercise training alter cardiometabolic measures differently based on cardiorespiratory fitness response in adults with obesity with and without T2D?

Population

36 adults with obesity, 39% with T2D

Comparison

AET responders (peak VO2 change > 0) vs non-responders (peak VO2 change <= 0)

Follow-up

15 weeks

Key result

A 15-week aerobic exercise training program in adults with obesity elicited heterogeneous adaptations, with responders showing significant differences in max workload (P<0.001) and ejection fraction (P=0.013).

Authors

SPSungho ParkEEERIN K. ENGLUNDLKLESLIE KNAUB

Discussion

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Member takes

Overview

May inform tailored exercise programs for adults with obesity; leaves open determinants of heterogeneous adaptations in prospective trials.

Key Points

  • The aim is to explore how a 15-week aerobic exercise training affects cardiometabolic measures in individuals with obesity, focusing on changes in peak VO2.
  • Conducted a 15-week supervised aerobic exercise training (AET) program;
  • Assessed metabolic biomarkers, echocardiography, and cardiac magnetic resonance imaging before and after training.
  • Stratified participants into responders and non-responders based on changes in peak VO2.
  • Responders displayed higher anaerobic glycolysis compared to non-responders (P = 0.037).
  • Significant Exercise × Responder interactions noted for maximum workload (P < 0.001, η² = 0.31) and ejection fraction (P = 0.013, η² = 0.17).
  • Unique physiological profiles emerged within responders compared to non-responders.

Study Design

Type

Cohort (n=36)

Structured PICO

Does 15-week supervised aerobic exercise training alter cardiometabolic measures differently based on cardiorespiratory fitness response in adults with obesity with and without T2D?

P
Population
36 adults with obesity (39% with T2D) who completed a 15-week supervised aerobic exercise training program.
I
Intervention
15-week supervised aerobic exercise training (AET)
C
Comparator
Non-responders (changes in peak VO2 after AET ≤ 0)
O
Outcome
Changes in cardiometabolic measures (metabolic biomarkers, echocardiography, and cardiac magnetic resonance imaging)surrogate

Main Result

Effect estimate: η² 0.31

p-value: p=<0.001

A 15-week supervised aerobic exercise training program elicits heterogeneous physiological adaptations in adults with obesity, with significant differences in max workload and ejection fraction between peak VO2 responders and non-responders.

Cite This Study

Park et al. (2026) conducted a cohort in Obesity with and without Type 2 Diabetes (n=36). Aerobic exercise training (AET) vs. Non-responders (change in peak VO2 ≤ 0) was evaluated on Max workload and ejection fraction (η² 0.31, p=<0.001). A 15-week aerobic exercise training program in adults with obesity elicited heterogeneous adaptations, with responders showing significant differences in max workload (P<0.001) and ejection fraction (P=0.013).

synapsesocial.com/papers/6a250ce97def13d035e1d191https://doi.org/10.2337/db26-1125-or
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