Table 1. Overview of data collection pre-, during, and post-challenge.
When What How
Pre-Event -10 days Participant and challenges presentation Structured interview
-7 days Body composition Seca mBCA 554 (Germany)
-7 days Immunology, clinical chemistry, hematology, endocrinology Standard clinical chemistry and Immunology medical laboratory tests
During the Event Distance, duration, pace, elevation, energy expenditure, heart rate Garmin Fenix 6 Pro Solar (Switzerland)
Post-Event +2 days Retrospective diary Semi-structured interview
+4 days Immunology, clinical chemistry, hematology, endocrinology Blood test
+4 days Body composition Seca mBCA 554 (Germany)