What question did this study set out to answer?

This study aimed to compare the effectiveness of different aerobic training regimens on glycemic control in individuals with type 2 diabetes.

July 29, 2026BMC Sports Science Medicine and RehabilitationOpen Access

Comparative effects of long- and short-interval aerobic high-intensity interval training on glycemic control among individuals with type 2 diabetes: a network meta-analysis

Q: What is the clinical evidence from this study?

Study design: Meta-Analysis. Population: type 2 diabetes (n=744). Intervention: Aerobic high-intensity interval training (HIIT-L and HIIT-S) vs. Moderate-intensity continuous training (MICT) or non-exercise control (CON). Primary outcome: Glycated hemoglobin (HbA1c) (MD -0.85, 95% CI -1.16 to -0.55).

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Key result

Long-interval HIIT reduces HbA1c by ~0.85% vs control, ranking highest for T2D glycemic control.

MD -0.85
95% CI -1.16 to -0.55
n=744

Why the study?

The study aimed to systematically compare and rank the relative efficacy of MICT, short-interval HIIT, and long-interval HIIT on glycemic control among individuals with type 2 diabetes.

Do different aerobic exercise modalities (MICT, HIIT-S, HIIT-L) improve glycemic control in individuals with type 2 diabetes?

Comparison

MICT vs HIIT-S vs HIIT-L vs non-exercise control

Design

Bayesian network meta-analysis of randomized controlled trials

Authors

XHXuanming HuAuckland University of Technology MWMeilin WenSouth China Normal University SLS H LiuUniversity of Pittsburgh

Discussion

Member takes

Implication

HIIT-L may be prioritized over MICT for glycemic control in T2D; extends RCT evidence by ranking protocols.

Key Points

This study aimed to compare the effectiveness of different aerobic training regimens on glycemic control in individuals with type 2 diabetes.
Systematic review and network meta-analysis of randomized controlled trials.
Compared HIIT-S, HIIT-L, and moderate-intensity continuous training (MICT) on glycemic outcomes.
Data analyzed included glycated hemoglobin, fasting plasma glucose, and insulin resistance.
HIIT-L significantly reduced HbA1c levels (MD = −0.85, 95% CrI: −1.16 to −0.55) compared to control.
All training protocols (MICT, HIIT-S, HIIT-L) significantly reduced fasting plasma glucose; HIIT-L was the most effective (MD = −1.12, 95% CrI: −1.54 to −0.70).
HIIT-L ranked highest for both HbA1c (97.41%) and fasting plasma glucose (92.31%) outcomes.

Study Design

Type

Meta-Analysis (n=744)

Structured PICO

Do different aerobic exercise modalities (MICT, HIIT-S, HIIT-L) improve glycemic control in individuals with type 2 diabetes?

Population

744 participants with type 2 diabetes from 16 randomized controlled trials comparing high-intensity interval training, moderate-intensity continuous training, or control.

Intervention

Moderate-intensity continuous training (MICT), short-interval high-intensity interval training (HIIT-S, ≤ 60 s), and long-interval HIIT (HIIT-L, ≥ 2 min)

Comparator

Non-exercise control (CON) and active comparisons among the exercise modalities

Outcome

Glycated hemoglobin (HbA1c) and fasting plasma glucose (FPG)surrogate

Main Result

Mean Difference: -0.85 (95% CI -1.16–-0.55)

Long-interval high-intensity interval training (HIIT-L) appears to be the most effective aerobic exercise modality for improving HbA1c and fasting plasma glucose in patients with type 2 diabetes.

Limitations

The HIIT-L versus MICT comparison for HbA1c was not robust to the exclusion of one study in sensitivity analysis.
HOMA-IR was included post hoc as an exploratory outcome with limited evidence and wide credible intervals.
Feasibility and tolerability of HIIT-S require direct evaluation.
HOMA-IR was included post hoc as an exploratory outcome with limited evidence and wide credible intervals
HIIT-L versus MICT comparison for HbA1c was not robust to the exclusion of one study (Winding et al.)
Feasibility and tolerability of HIIT-S require direct evaluation

Cite This Study

Hu et al. (2026) conducted a meta-analysis in type 2 diabetes (n=744). Aerobic high-intensity interval training (HIIT-L and HIIT-S) vs. Moderate-intensity continuous training (MICT) or non-exercise control (CON) was evaluated on Glycated hemoglobin (HbA1c) (MD -0.85, 95% CI -1.16 to -0.55). Long-interval high-intensity interval training significantly reduced HbA1c compared with control (MD -0.85; 95% CrI -1.16 to -0.55) and ranked highest for glycemic control in type 2 diabetes.

synapsesocial.com/papers/6a69a26dc8da07d9defa5c1c https://doi.org/10.1186/s13102-026-01921-4

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Comparative effects of long- and short-interval aerobic high-intensity interval training on glycemic control among individuals with type 2 diabetes: a network meta-analysis

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Main Result

Limitations

Cite This Study

Comparative effects of long- and short-interval aerobic high-intensity interval training on glycemic control among individuals with type 2 diabetes: a network meta-analysis

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Main Result

Limitations

Cite This Study

Also Consider

Also Consider