Study note • PMID 28633487
High Intensity Interval Training Improves Physical Performance and Frailty in Aged Mice.
How to use this page
This note summarizes one study record. Check the participants, methods, results, and limitations before applying it to training.
- • Design signal: controlled study.
- • Population relevance: athlete/trained context.
- • Consistency: single-study evidence.
- • Practical recommendation depends on tolerance, context, and whether it protects training consistency.
ELI5
In plain language
Sarcopenia and frailty are highly prevalent in older individuals, increasing the risk of disability and loss of independence. (controlled study; trained participants).
Effects on VO₂max, Lactate threshold are mixed or unclear from the abstract alone. Treat this as a signal, not a guarantee; confirm methods and context in the full paper.
Takeaways
What the abstract suggests
- • Study question: Sarcopenia and frailty are highly prevalent in older individuals, increasing the risk of disability and loss of independence.
- • Effects on VO₂max, Lactate threshold are mixed or unclear from the abstract alone.
- • Population: trained participants.
- • Protocol cues (title/abstract): 16 weeks.
Protocol
Protocol (as reported)
- • Intervention/exposure: endurance, interval (vs comparison group).
- • Dose/time/duration cues in abstract/title: 16 weeks.
- • Outcomes: VO₂max, Lactate threshold.
- • Replication note: abstracts often omit adherence and timing; confirm details before changing training or supplementation.
Fit
Who it may help, and who should be cautious
Who it helps
- • Athletes similar to the study population (trained participants) working on endurance.
- • Athletes who can measure VO₂max, Lactate threshold with a repeatable workout or time-trial effort.
Who should be cautious
- • If you have symptoms or conditions that make the intervention risky, get professional guidance.
- • If you’re near race day and can’t safely test, defer the experiment.
Methods
What the study actually did
- • Design: controlled study.
- • Population: trained participants.
- • Comparator: comparison group.
- • Outcomes measured: VO₂max, Lactate threshold.
- • Protocol cues mentioned: 16 weeks.
- • Source: PubMed PMID 28633487 (2018) — The journals of gerontology. Series A, Biological sciences and medical sciences.
Results excerpt
What the abstract reports
“HIIT-trained mice demonstrated dramatic improvement in grip strength (HIIT 10.9% vs -3.9% in sedentary mice), treadmill endurance (32.6% vs -2.0%), and gait speed (107.0% vs 39.0%).”
Note: excerpts are short; for full context, read the paper.
Limits
Limitations and bias
- • Abstract-only summaries can miss critical details (population, protocol, adherence, and context).
- • Single studies often don’t generalize to your event, history, and training load; treat results as a starting point.
- • If your context differs (elite vs recreational; cycling vs running), adjust expectations and be conservative.
- • This is performance information, not medical advice.
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