(1.Department of Athletic Training,Guangzhou Sport University,Guangzhou 510500,China;2.Laboratory of Laser Sports Medicine,South China Normal University,Guangzhou 510006,China) Abstract: In order to probe into the retest reliability of running economy (RE) measured on the same day (in the morning and afternoon), the authors selected 12 student orienteers and middle and long distance runners (5 girl students and 7 boy students) as testees; the RE test times were 09:00 in the morning and 14:30 in the afternoon on the same day; the indoor air temperature was 20oC, the humidity was 45%. The authors revealed the following findings: the RE value measured in the morning was (32.622.90) mL/(kg•min), slightly lower than the RE value measured in the afternoon ((32.943.05) mL/(kg•min)); the interclass correlation coefficient of RE test results measured in the morning and after-noon was 0.928, which means that the RE retest liability is excellent. The findings indicate that RE test results meas-ured in the morning and afternoon on the same day are stable, and that the retest reliability is extremely high. Key words: sports physiology;running economy;retest reliability;student athlete |