Skip Navigation LinksHome > August 2009 - Volume 23 - Issue 5 > Reliability of the Ekblom Soccer-Specific Endurance Test
Journal of Strength & Conditioning Research:
doi: 10.1519/JSC.0b013e31819f1e6c
Original Research

Reliability of the Ekblom Soccer-Specific Endurance Test

Williams, Morgan D1,2; Wiltshire, Huw D3; Lorenzen, Christian1,2; Wilson, Cameron J1,2; Meehan, Daniel L1,2; Cicioni Kolsky, Daniel J1,2

Collapse Box


Williams, MD, Wiltshire, HD, Lorenzen, C, Wilson, CJ, Meehan, DL, and Cicioni Kolsky, DJ. Reliability of the Ekblom soccer-specific endurance test. J Strength Cond Res 23(5): 1378-1382, 2009-The aim of this study was to explore and quantify measurement reliability of the Ekblom endurance test. Experienced university soccer players (n = 19; age = 20.5 ± 2.5 years; mass = 80.4 ± 9.8 kg; and stature = 179.0 ± 6.0 cm) completed the Ekblom endurance test on 3 separate occasions. Time to complete trial 1 (549 ± 26 seconds) and trial 2 (547 ± 26 seconds) was analyzed, and despite no significant difference (F1,18 = 4.119, p = 0.057, ηP2 = 0.186) between trials, some evidence of systematic bias was observed in the data. Therefore, trial 2 data were compared with those of trial 3 (548 ± 27 seconds), with trial 1 data removed. The subsequent analysis (F1,18 = 0.740, p = 0.401, ηP2 = 0.039) showed a reduction in the risk of making a type II error when compared with the previous analysis. From the reliability analyses (3,1 intraclass correlation = 0.983, SEM = ±3 seconds, smallest worthwhile change = 5 seconds, standard error of prediction [95% confidence intervals] = ± 9 seconds), a high level of measurement reliability was observed and the sensitivity of the test to monitor changes was “good.” In summary, it was shown that a test that involves a variety of soccer-specific forms of locomotion can be highly reliable and sensitive to detect change. In light of the systematic bias found, we do, however, recommend a familiarization session to be scheduled before the introduction of this test.

© 2009 National Strength and Conditioning Association



Article Tools


Article Level Metrics

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.