Absolute and relative reliability of pain sensitivity and functional outcomes of the affected shoulder among women with pain after breast cancer treatment
Metadata
Show full item recordEditorial
Public Library of Science
Date
2020-06Referencia bibliográfica
Rasmussen GHF, Kristiansen M, ArroyoMorales M, Voigt M, Madeleine P (2020) Absolute and relative reliability of pain sensitivity and functional outcomes of the affected shoulder among women with pain after breast cancer treatment. PLoS ONE 15(6): e0234118. [https://doi. org/10.1371/journal.pone.0234118]
Sponsorship
: GHFR, PM, MK and MV received a grant (grant nr. R204-A12469) from the Danish Cancer Society (URL: https://www.cancer.dk/). The grant covered salary and equipment expenses. The funder had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.Abstract
Objective
Breast cancer survivors (BCS) are often characterized by decreased pressure pain thresholds (PPT), range of motion (ROM) and strength in and around the shoulder affected by the
treatment. This intra-rater reliability study was to establish the relative and absolute reliability
of PPT’s, active ROM and maximal isokinetic muscle strength (MIMS) of the affected shoulder in BCS with persistent pain after treatment.
Methods
Twenty-one BCS participated in the study. The PPTs of 17 locations and pain intensity were
assessed using a pressure algometer and a numeric rating scale. The ROM was measured
using a universal goniometer and MIMS was measured using an isokinetic dynamometer.
Relative reliability was estimated using intra class correlation coefficient (ICC), and absolute
reliability using standard error of measurement (SEM). Minimum detectable change (MDC)
was calculated from SEM.
Results
The ICCs for PPTs ranged from 0.88–0.97, with SEM values ranging from 12.0 to 28.2 kPa
and MDC ranging from 33.2 to 78.2 kPa. The ICCs for ROM ranged from 0.66–0.97, with
SEM values ranging from 3.0 to 7.5˚ and MDC ranging from 8.4 to 20.8˚. Finally, ICCs for
MIMS ranged from 0.62–0.92, with SEM values ranging from 0.03 to 0.07 Nm/Kg FFM and
MDC ranging from 0.09 to 0.19 Nm/kg FFM.
Conclusion
The results of this study indicate that PPTs, ROM and MIMS can be measured reliably on
the affected shoulder in BCS with pain after treatment. This offer the possibility of using
these measures to assess the effectiveness of interventions in this population.