Exercise Training Study of Patients With Claudicatio Intermittens

Inclusion Criteria: 1. Pain in the calves after 300 m, or less measured on a treadmill 2. Stable symptoms last 6 months or more 3. The pain must be gone within 5 minutes after the patients stop walking 4. Ankle-Brachial index at 0.7 or lower at rest 5. Using statins and antiplatelet drugs since at least 3 months 6. age\> 18 years 7. Signed consent Exclusion Criteria: 1. pain in the hips or elsewhere outside the calves while walking 2. Remaining pain more than 5 minutes after stopped walking. 3. Impossible to compress the arteries while measruing ABI or ABI lower than 0.4 4. Use of statins and antiplatelet drugs less than 3 months 5. symptoms less than 6 months 6. Diabetes measured with HbA1c being over 48 mmol/mol (6%) 7. Revascularisation the last 6 months 8. Pain in the calves after longer than 300 m measured on a treadmill 9. Reduced mobility in the ankles 10. Reduced physical ability to perform a test on a treadmill. 11. Age less than 18 years 12. General conditions that impairs the ability to take part in a training study including Obesity, KOLS, heart disease, arthrosis, inflammatory joint diseases . 13. No Signed consent