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COSMED K5 Supporting Sam Long’s Top-6 Finish at the IRONMAN World Championship

Published: 20 October 2026

As part of his preparation for the IRONMAN World Championship in Kona, Hawaii, professional triathlete Sam Long undergoes a running metabolic assessment conducted by coach Parker Spencer using the COSMED K5 wearable metabolic system.

The test provided valuable insights into key physiological parameters, including VO₂ max, threshold and running economy, helping evaluate Sam’s performance profile and guide his preparation throughout the season.

With COSMED K5, metabolic testing moves with the athlete, enabling the collection of physiological data in real-world training conditions and providing coaches with actionable insights to support performance development.

The results speak for themselves: Sam went on to deliver an outstanding performance at the IRONMAN World Championship in Kona, finishing 6th overall with an impressive time of 7:55:21.

🎥 Watch the video to see Parker Spencer, Sam Long and the COSMED K5 in action, and discover how field-based metabolic testing can help athletes and coaches make informed training decisions on the road to peak performance.

 

👉 Discover more about COSMED K5

 

[ Video credit: Sam Long YouTube Channel ]

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COSMED is a world leading supplier of Cardio Pulmonary, Metabolic and Body Composition testing solutions to Sports Science, Medicine, Professional Sport and Wellness.

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