Table 2: Study design.

TimeResearch/training

Spiroergometry/speed-strength tests
31P-MRS (7 days after sports tests)
Biopsy (within 2 days after 31P-MRS)

Week 1–8Speed-strength training

-week 9 31P-MRS (5 days after last training)
Biopsy (within 2 days after 31P-MRS)

Week 10–17Endurance training

-week 18 31P-MRS (5 days after last training)
Biopsy (within 2 days after 31P-MRS)

Week 19–26De-training

31P-MRS
Biopsy (within 2 days after 31P-MRS)