Home›Neurology› HIIT and MICT improve fitness and walking after chronic stroke, but balance evidence is low
HIIT and MICT improve fitness and walking after chronic stroke, but balance evidence is lowHigh intensity training improves walking speed after a stroke
Frontiers in MedicinePublished July 7, 2026DOI ↗Editorial oversight: Dr. Ji-eun Park, MD · Brain, Mind & Pain
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Key Takeaway
Consider HIIT or MICT to improve cardiorespiratory fitness and walking in chronic stroke, but balance benefits are uncertain.
This network meta-analysis of 33 RCTs involving 1,665 chronic stroke patients (≥3 months post-stroke) compared High-Intensity Interval Training (HIIT) and Moderate-Intensity Continuous Training (MICT) against Standard of Care (SOC). The primary outcomes included VO2peak, 6-Minute Walk Test (6MWT), 10-Meter Walk Test (10MWT), Berg Balance Scale (BBS), and Time Up and Go (TUG).
HIIT and MICT demonstrated the most significant effects on VO2peak (20 studies, n=1,040), 6MWT (20 studies, n=1,113), and 10MWT (13 studies, n=566). No statistically significant differences were found for BBS (12 studies, n=504) or TUG (7 studies, n=297) between the vast majority of interventions.
Limitations include low to very low evidence certainty for BBS and TUG, and limited confidence in comparative effects overall. Adverse events and follow-up duration were not reported.
Clinically, HIIT and MICT may improve cardiorespiratory fitness and walking performance after chronic stroke, but results on balance and TUG remain inconclusive. Results should be interpreted cautiously due to low evidence certainty.
How this fits prior evidence
This network meta-analysis extends prior findings on post-stroke rehabilitation. While earlier coverage highlighted rTMS and TMS for spasticity and upper limb function, this analysis focuses on aerobic exercise modalities. It confirms that HIIT and MICT improve walking and fitness, but contrasts with the positive balance outcomes seen with other interventions, as BBS and TUG showed no significant improvement. The low certainty aligns with the cautious tone of prior antihypertensive and bridging therapy findings.
Living with the aftermath of a stroke often means facing physical hurdles, like getting tired quickly or struggling to walk long distances. New research looked at how different types of exercise help patients who are at least three months past their stroke. The study compared high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) against standard care.
The results show that both HIIT and MICT significantly improved heart health and walking performance. Specifically, people who did these types of exercise performed better on tests measuring how far they could walk in six minutes and their overall cardiorespiratory fitness. These improvements are important for regaining independence in daily life.
While the training helped with walking speed and stamina, the results were less clear regarding balance and getting up from a chair quickly. Because the evidence for these specific movements is currently low to very low, doctors should still weigh the benefits carefully. For now, high-intensity and moderate-intensity programs show great promise for improving mobility after a stroke.
What this means for you:
High-intensity and moderate-intensity training can improve walking distance and heart health after a stroke.
Common questions
What types of exercise are most effective after a stroke?
Both high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) showed the most significant effects. These methods helped patients improve their cardiorespiratory fitness and performance on walking tests, such as the 6-minute walk test and the 10-meter walk test.
Does this type of exercise help with balance?
The results for balance were not conclusive. While HIIT and MICT improved walking speed, there were no statistically significant differences between the types of exercise when it came to the Berg Balance Scale or the Time Up and Go test.
Who is this research intended for?
This study focused on people with a chronic stroke who are at least 3 months past their initial stroke. It looked at how different exercise intensities helped these specific patients improve their physical mobility and heart health.
ObjectiveThis study aims to conduct a systematic review and network meta-analysis of randomized controlled trials (RCTs) to assess the effects of different aerobic exercise modalities on cardiopulmonary fitness and functional recovery outcomes [including VO2peak, 6-Minute Walk Test (6MWT), 10-Meter Walk Test (10MWT), Berg Balance Scale (BBS), and Time Up and Go (TUG)] in chronic stroke patients (≥3 months post-stroke).MethodsThis study employed a network meta-analysis (NMA) based on 33 RCTs involving 1,665 participants. The analysis followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Network Meta-Analyses (PRISMA-NMA) guidelines. The primary outcomes assessed included VO2peak, 6MWT, 10MWT, BBS, and TUG. A consistency-based random-effects model was used to evaluate the effects of different exercise intensities on these outcomes. To assess the robustness of the findings, sensitivity analysis was performed by sequentially excluding each study and re-estimating the effect size of each intervention relative to Standard Of Care (SOC). This ensured that the overall results were not influenced by any single study. Additionally, linear regression analysis was conducted to evaluate the potential modifying effects of baseline gait speed, total intervention duration, baseline VO2peak and age on the therapeutic effects of the interventions.ResultsA total of 33 studies were included in the analysis, with 20 studies (n = 1,040) assessing VO2peak, 20 studies (n = 1,113) on the 6MWT, 13 studies (n = 566) on the 10MWT, and 12 studies (n = 504) on the BBS and 7 studies (n = 297) on the TUG. Both High-Intensity Interval Training (HIIT) and Moderate-Intensity Continuous Training (MICT) demonstrated the most significant effects on VO2peak, 6MWT, and 10MWT. For BBS or TUG, there are no statistically significant differences between the vast majority of interventions. Surface under the cumulative ranking curve (SUCRA) rankings tended to favor HIIT and MICT for VO2peak and walking outcomes, but confidence in comparative effects was limited. Evidence certainty assessed with CINeMA was predominantly low to very low across comparisons, particularly for BBS and TUG.ConclusionHIIT and MICT may improve cardiorespiratory fitness and walking performance after chronic stroke; however, the certainty of evidence is largely low or very low, and results should be interpreted cautiously. Effects on balance and TUG remain inconclusive.Systematic review registrationhttps://www.crd.york.ac.uk/PROSPERO/view/CRD420251171092, Identifier: CRD420251171092.
