Validity of a stage algorithm for physical activity in participants recruited from orthopedic and cardiac rehabilitation clinics

Rehabilitation Psychology (2010) - Comment
pubmed: 21171799 doi: 10.1037/a0021563 issn: 1939-1544 issn: 0090-5550

Sonia Lippke, Lena Fleig, Sarah Pomp, Ralf Schwarzer