Conceptualizing and measuring physical functioning in cancer survivorship studies

Area of Science:

• Oncology Nursing
• Rehabilitation Science
• Cancer Survivorship Research

Background:

• Physical functioning is a critical outcome for cancer survivors.
• Intervention studies aim to improve physical functioning but often lack standardized approaches.
• Understanding the dimensions and mediators of physical functioning is essential for effective interventions.

Purpose of the Study:

• To propose a conceptual model for designing intervention studies focused on improving physical functioning in cancer survivors.
• To guide nurse scientists in developing more effective interventions.
• To enhance the translation of research into clinical practice.

Main Methods:

• Reviewed conceptualizations of physical functioning in the general population.
• Analyzed existing exercise intervention studies in breast cancer survivors.
• Identified common practices and gaps in measuring physical functioning and testing mediators.

Main Results:

• Most studies assessed only one dimension of physical functioning.
• Mediators of physical functioning improvements were rarely examined in intervention studies.
• Inconsistent measurement and terminology limit knowledge generation.

Conclusions:

• Standardizing the selection, naming, and measurement of physical functioning outcomes is crucial.
• Systematic testing of mediators can elucidate intervention mechanisms.
• Consistent reporting will improve communication and accelerate knowledge translation in cancer survivorship care.