Study note • PMID 30452459
Alkaline water improves exercise-induced metabolic acidosis and enhances anaerobic exercise performance in combat sport athletes.
Low risk + high feasibility for most athletes.
ELI5
In plain language
Hydration is one of the most significant issues for combat sports as athletes often use water restriction for quick weight loss before competition. (randomized trial; n=16 well-trained athletes).
Effects on Time to exhaustion, Performance in heat, Cramp risk 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: Hydration is one of the most significant issues for combat sports as athletes often use water restriction for quick weight loss before competition.
- • Effects on Time to exhaustion, Performance in heat, Cramp risk are mixed or unclear from the abstract alone.
- • Population: n=16 well-trained athletes.
- • Protocol cues (title/abstract): 3 minutes.
Protocol
Protocol (as reported)
- • Intervention/exposure: hydration, sodium (vs placebo).
- • Dose/time/duration cues in abstract/title: 3 minutes.
- • Outcomes: Time to exhaustion, Performance in heat, Cramp risk.
- • 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 (n=16 well-trained athletes) working on hydration.
- • Athletes who can measure Time to exhaustion, Performance in heat, Cramp risk 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 (double-blind, placebo-controlled).
- • Population: n=16 well-trained athletes.
- • Comparator: placebo.
- • Outcomes measured: Time to exhaustion, Performance in heat, Cramp risk.
- • Protocol cues mentioned: 3 minutes.
- • Source: PubMed PMID 30452459 (2018) — PloS one.
Results excerpt
What the abstract reports
“Anaerobic performance was evaluated by two double 30 s Wingate tests for lower and upper limbs, respectively, with a passive rest interval of 3 minutes between the bouts of exercise.”
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.
Coaching beta
Get a plan that adapts to your life.
Join the 26weeks.ai TestFlight beta for adaptive coaching, recovery-aware adjustments, and race-week reminders.
Keep going
Performance Science Lab
Research-backed protocols and evidence grades for endurance performance — built for athletes.
Hydration performance research
Hydration is context dependent: heat, sweat rate, and sodium losses change the plan.
Caffeine for endurance performance: a practical protocol
Evidence-informed protocol: Caffeine for endurance performance: a practical protocol. Practical steps, who it helps, and what to watch out for.
Time to exhaustion research for endurance athletes
A lab outcome that can still guide training: it often tracks fatigue resistance.
Performance in heat research for endurance athletes
Heat punishes ego pacing; you need acclimation and cooling strategy to execute.