Aarhus University Seal / Aarhus Universitets segl

New Article Accepted by JSCR

Mette Dideriksen, Cristina Soegaard and Rasmus O. Nielsen from RUNSAFE have their article "Validity of self-reported running distance" accepted by the Journal of Strength and Conditioning Research.

2015.10.21 | Rasmus Østergaard Nielsen


It is unclear whether there is a difference between subjective evaluation and objective Global Positioning Systems (GPS) measurement of running distance. The purpose of the present study was to investigate if such difference exists.
A total of 100 participants (51% males, median age 41.5, body mass 78.1 kilogram +/- 13.8 standard deviation) completed a run of free choice, then subjectively reported the distance in kilometer (km). This information was subsequently compared with the distance derived from a non-differential GPS watch using paired t-tests and Bland-Altman's 95% Limits of Agreement. No significant difference was found between the mean paired differences between subjective evaluations and GPS measurements (1.86%, 95% CI = -1.53%; 5.25%, p=0.96). The Bland-Altman 95% Limits of Agreement revealed considerable variation (lower limit = -32%, upper limit = 35%). Such variation exceeds the clinical error range of 10%.
In conclusion, the mean running distance (km) is similar between self-reporting and GPS measurement. However, researchers should consider using GPS measurements in favor of subjective reporting of running distance because of considerable variation on an individual level.

Click here to read more about this and other RUNSAFE articles

All groups, Runsafe, Runsafe, Research, Collaboration