Study note • PMID 40362749
Effects of Protein Supplementation During High-Intensity Functional Training on Physical Performance in Recreationally Trained Males and Females: A Randomized Controlled Trial.
Low risk + high feasibility for most athletes.
ELI5
In plain language
High-intensity functional training (HIFT) combines multijoint aerobic and resistance exercises. (randomized trial; trained participants).
The abstract doesn’t indicate a clear change in VO₂max, Lactate threshold under the tested conditions. Treat this as a signal, not a guarantee; confirm methods and context in the full paper.
Takeaways
What the abstract suggests
- • Study question: High-intensity functional training (HIFT) combines multijoint aerobic and resistance exercises.
- • The abstract doesn’t indicate a clear change in VO₂max, Lactate threshold under the tested conditions.
- • Population: trained participants.
- • Protocol cues (title/abstract): 0.6 g/kg • 1.0 g/kg • 1.6 g/kg • 6 weeks • 2 weeks.
Protocol
Protocol (as reported)
- • Intervention/exposure: aerobic, endurance (vs placebo).
- • Dose/time/duration cues in abstract/title: 0.6 g/kg • 1.0 g/kg • 1.6 g/kg • 6 weeks • 2 weeks.
- • Outcomes: VO₂max, Lactate threshold.
- • Replication note: abstracts often omit adherence and timing; confirm details before changing training or supplementation.
Fit
Who it helps, and who should skip it
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 skip
- • 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: randomized trial (placebo-controlled).
- • Population: trained participants.
- • Comparator: placebo.
- • Outcomes measured: VO₂max, Lactate threshold.
- • Protocol cues mentioned: 0.6 g/kg • 1.0 g/kg • 1.6 g/kg • 6 weeks • 2 weeks.
- • Source: PubMed PMID 40362749 (2025) — Nutrients.
Results excerpt
What the abstract reports
“Short-term HIFT improved exercise capacity, upper-body strength, and core endurance.”
Note: excerpts are short; for full context, read the paper.
Limits
Limitations & 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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