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Sports science, made interactive.

Paper Playground turns cutting-edge sports science research into interactive mini-apps. Explore new ideas, see them in action, and test how they apply to you by connecting your SweatStack account.

Paper Playground

How it works

  1. Pick — Each playground is specifically designed to explore a research paper
  2. Explore — Use sample data to explore the ideas in the paper
  3. Connect — Connect your SweatStack account to see how it applies to you

Playgrounds

A Theory of the Metabolic origin of anaerobic threshold

A Theory of the Metabolic origin of anaerobic threshold
Mader, A., & Heck, H. (1986). A theory of the metabolic origin of “anaerobic threshold”. International journal of sports medicine, 7(S 1), S45-S65.

Despite the fact that an increase of lactate at a certain submaximal level of power was known long before the idea of “anaerobic threshold” (AT) was introduced by Wasserman et al. as the point at which a change from exclusively aerobic to partially anaerobic energy supply by formation and accumulation of lactate occurs in graded exercise tests, the mechanism of this change in a metabolic pattern is not well understood and therefore the subject of various speculation.

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Capturing the Complex Relationship Between Internal and External Training Load: A Data-Driven Approach

Capturing the Complex Relationship Between Internal and External Training Load: A Data-Driven Approach
van der Zwaard, S., Otter, R. T., Kempe, M., Knobbe, A., & Stoter, I. K. (2023). Capturing the complex relationship between internal and external training load: a data-driven approach. International journal of sports physiology and performance, 18(6), 634-642.

Training load is typically described in terms of internal and external load. Investigating the coupling of internal and external training load is relevant to many sports. Here, continuous kernel-density estimation (KDE) may be a valuable tool to capture and visualize this coupling.

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