Repeat physical activity measurement by accelerometry among colorectal cancer patients—feasibility and minimal number of days of monitoringReportar como inadecuado

Repeat physical activity measurement by accelerometry among colorectal cancer patients—feasibility and minimal number of days of monitoring - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

BMC Research Notes

, 8:222

First Online: 06 June 2015Received: 30 October 2014Accepted: 12 May 2015DOI: 10.1186-s13104-015-1168-y

Cite this article as: Skender, S., Schrotz-King, P., Böhm, J. et al. BMC Res Notes 2015 8: 222. doi:10.1186-s13104-015-1168-y


BackgroundPhysical activity plays an important role in colorectal cancer and accelerometry is more frequently used to measure physical activity. The aim of this study was to evaluate feasibility of physical activity measurement by accelerometry in colorectal cancer patients under free-living conditions at 6, 12 and 24 months after surgery, to evaluate the appropriate wear time and to compare results to pedometry.

MethodsColorectal cancer patients stage 0-I–IV from the ColoCare study were asked to optionally wear an accelerometer and a pedometer for ten consecutive days 6, 12 and 24 months post-surgery. Participants completed a feedback questionnaire about the accelerometer measurement. The course of moderate-to-vigorous physical activity over the 10 days was investigated. Additionally, daily step counts from accelerometers and pedometers were compared.

ResultsIn total, there were 317 individual time points, at which 198 participants were asked to wear an accelerometer. Fifty-nine% initially agreed to participate and of these, 83% n = 156 completed the assessment with at least 4 days of data. Twenty-one% more consents were obtained when participants were asked on a face-to-face basis compared to recruitment by telephone P = 0.0002. There were no significant differences in time spent in moderate-to-vigorous physical activity between different wear-time lengths of accelerometry. Both Spearman and intraclass correlation coefficients showed strong correlations 0.92–0.99 and 0.84–0.99, respectively of moderate-to-vigorous physical activity across 3, 4, 7 and 10 days measurement. Step counts measured by accelerometry and pedometry were strongly correlated ρ = 0.91, P < 0.0001.

ConclusionThis study suggest that accelerometry is a feasible method to assess physical activity in free-living colorectal cancer patients and that three valid days of physical activity measurement are sufficient for an accurate assessment.

KeywordsFeasibility Physical activity Measurement Colorectal cancer Accelerometry AbbreviationsBMIbody mass index

ICCintraclass correlation coefficient

ICDInternational Statistical Classification of Disease and Related Health Problems

MVPAmoderate-to-vigorous physical activity

NCTNational Center for Tumor Diseases

Electronic supplementary materialThe online version of this article doi:10.1186-s13104-015-1168-y contains supplementary material, which is available to authorized users.

Download fulltext PDF

Autor: Stephanie Skender - Petra Schrotz-King - Jürgen Böhm - Clare Abbenhardt - Biljana Gigic - Jenny Chang-Claude - Erin M Si


Documentos relacionados