Blog
- The 30-minute field test: setting paces without a lactate meter2026-07-04
Without a lactate meter, a continuous 30-minute test can estimate a swimmer's critical swim speed, from which training zones can be derived. Protocol and limits.
- Paper, WhatsApp, or an app: an honest comparison for swim coaches2026-07-04
Excel, poolside paper, WhatsApp, or a dedicated tool: each method has its strengths. An honest comparison to help you pick what fits your club.
- The V4 model in swimming: why lactate beats heart rate for setting training paces2026-07-03
Dr. Jan Olbrecht's V4 model calculates a swimmer's training zones from a two-speed test. How it works, and why heart rate alone falls short.