The results will be evaluated on the amount of physical activity ( LASA Physical Activity Questionnaire ) , mobility ( modified ` get up and go ' test , walking speed and six-minute walking test ) , quality of life ( SF-36 ) , degree of frailty ( Evaluative Frailty Index for Physical Activity ) , fatigue ( NRS-fatigue ) , perceived effect ( Global Perceived Effect and Patient Specific Complaints questionnaire ) and health care costs .