Feasibility of a Blended Therapy Approach

Inclusion Criteria: Diagnosis of mild Haemophilia or Myositis * able to walk 20 meters without walking aids * currently exercising less than one training session per week (training = vigorous activity) * maintenance of a stable medical regimen for 4 weeks prior to initiation of study and considered to maintain a stable regimen for the course of the study * signed informed consent to participate in the study Exclusion Criteria: * Clinically significant concomitant disease states (e.g., renal failure, hepatic dysfunction, severe cardiovascular and/or pulmonary disease, severe osteoporosis, pulmonary hypertension, pain syndrome, paresis) * Contraindications to physical exercise for People with Haemophila: Factor-prophylaxis-regimen, inhibitor positive, less than 6 months after arthroplasty surgery, acute joint or muscle bleeding within the last 30 days for People With Myosites: acute exacerbation of inflammation * Known or suspected non-compliance, drug or alcohol abuse, * Inability to follow the procedures of the study, e.g. due to language problems, psychological disorders, dementia, etc. of the participant, * Participation in another study with investigational drug within the 30 days preceding and during the present study * Known pregnancy or breastfeeding