Conducting a larger randomized controlled trial would be feasible. In comparison with the beginning of the intervention, the participants in the ALT group showed significant beneficial changes after 12 wks of treatment, whereas the control group did not improve. ALT did not make the lymphedema volume worse and therefore may serve as a safe alternative to land-based treatments of breast cancer-related lymphedema.

This study demonstrates that the content of the EORTC QLQ-C30 goes beyond functioning and includes global feeling of well-being and that the content of the EORTC QLQ-BR23 is related to functioning. Furthermore, linking items to the ICF framework could be an additional method to validate the content of health-related questionnaires.

Clinicians usually underestimate the symptoms and impairments of the patients, leading to a greater proportion of poor agreement. PRO's provide valuable information on impairments at the mental function level and pain. ClinRO's provide more valuable information on physically assessed impairments (oedema). Activity limitations and participation restrictions, excluding reporting the difficulty aspect of various life situations, can be either SRO or ObsRO. Implications for rehabilitation Impairments, activity limitation and participation restrictions are common sequelae of breast cancer treatment, which ultimately may affect the person's quality of life and should be investigated early on in the continuum of care. Clinicians should rely on the symptoms' reported by the patient regarding lymphedema and should identify the presence and severity of it. Patients inform best on the severity of pain, fatigue and mental distress experienced during and post-breast cancer treatment as clinicians tend to underestimate them. Clinicians and patients concur on presence and severity of activity limitations but not on difficulty, which can only be assessed from the patient's perspective.

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