Rabbani, AlirezaKargarfard, MehdiTwist, Craig2018-01-242018-01-242017-11-27Rabbani, A., Kargarfard, M., & Twist, C. (2018). The Reliability and Validity of A Submaximal Warm-Up Test for Monitoring Training Status in Professional Soccer Players. Journal of Strength Conditioning Research, 32(2), 326-333. DOI: 10.1519/JSC.000000000000233510.1519/JSC.0000000000002335http://hdl.handle.net/10034/620814This is a non-final version of an article published in final form in Rabbani, A., Kargarfard, M., & Twist, C. (2018). The Reliability and Validity of A Submaximal Warm-Up Test for Monitoring Training Status in Professional Soccer Players. Journal of Strength Conditioning Research, 32(2), 326-333. DOI: 10.1519/JSC.0000000000002335Two studies were conducted to assess the reliability and validity of a submaximal warm-up test (SWT) in professional soccer players. For the reliability study, 12 male players performed SWT over three trials, with one week between trials. For the validity study, 14 players of the same team performed SWT and 30-15 Intermittent Fitness Test (30-15IFT) 7 days apart. Week-to-week reliability in selected heart rate (HR) responses [exercise HR (HRex), HR recovery (HRR) expressed as the number of beats recovered within 1 min (HRR60s) and expressed as the mean HR during 1 min (HRpost1)], were determined using intraclass correlation coefficient (ICC) and typical error of measurement expressed as coefficient of variation (CV). The relationships between HR measures derived from SWT and the maximal speed reached at the 30-15IFT (VIFT) were used to assess validity. The range for ICC and CV values were 0.83 to 0.95 and 1.4 to 7.0% in all HR measures, respectively, with the HRex as the most reliable HR measure of SWT. Inverse large (r = -0.50, 90% confidence limits, CL (-0.78; -0.06)) and very large (r = -0.76, CL, -0.90; -0.45) relationships were observed between HRex and HRpost1 with VIFT in relative (expressed as the % of maximal HR) measures, respectively. SWT is a reliable and valid submaximal test to monitor high-intensity intermittent running fitness in professional soccer players. In addition, the test’s short duration (5-min) and simplicity mean that it can be used regularly to assess training status in high-level soccer players.enHeart rate monitoringHigh intensity intermittent runningArticle1533-4287Journal of Strength and Conditioning Research