Reduced-exertion high-intensity interval training (REHIT): a feasible approach for improving health and fitness?
Level 5 - mechanism / opinion, no new human data
Narrative review of existing literature without systematic review methodology reported in abstract
PubMed 38688037 · doi:10.1139/apnm-2024-0024
What was done
The authors performed a critical review synthesizing evidence on the efficacy, feasibility, acceptability, and effectiveness of reduced-exertion high-intensity interval training (REHIT)—consisting of two or three 20-30 s all-out sprints in a 10-min training session—for improving health and fitness.
What was found
The abstract reports no numerical data, sample sizes, or effect estimates. It reports qualitatively that REHIT protocols can elicit beneficial metabolic and cardiovascular adaptations while potentially reducing common barriers to exercise participation.
Why it matters
REHIT may offer an extremely time-efficient alternative to conventional aerobic exercise or traditional interval training, potentially improving adherence among individuals facing time constraints.
Limits
The abstract describes a narrative review rather than a systematic review or meta-analysis. It provides no specific population details, quantitative outcomes, study counts, or risk-of-bias evaluations.
Cited by
- supports The reduced-exertion high-intensity interval training (REHIT) protocol on the CAROL bike improves VO2 max by 12% to 15% after 8 weeks with 15 minutes of total exercise per week.