摘要：Highlights
•
The 30–15 Intermittent Fitness Test has excellent test-retest reliability for maximal velocity.
•
Excellent test-retest reliability was also noted for peak heart rate.
•
This test may be used as a reliable measure of fitness in research and sports practice.
Purpose
This review aimed to synthesize previous findings on the test–retest reliability of the 30–15 Intermittent Fitness Test (IFT).
Methods
The literature searches were performed in 8 databases. Studies that examined the test–retest reliability of the 30–15 IFT and presented the intraclass correlation coefficient (ICC) and/or the coefficient of variation (CV) for maximal velocity and/or peak heart rate were included. The consensus-based standards for the selection of health measurement instruments (COSMIN) checklist was used for the assessment of the methodological quality of the included studies.
Results
Seven studies, with a total of 10 study groups, explored reliability of maximal velocity assessed by the 30–15 IFT. ICCs ranged from 0.80 to 0.99, where 70% of ICCs were ≥0.90. CVs for maximal velocity ranged from 1.5% to 6.0%. Six studies, with a total of 7 study groups, explored reliability of peak heart rate as assessed by the 30–15 IFT. ICCs ranged from 0.90 to 0.97 (i.e., all ICCs were ≥0.90). CVs ranged from 0.6% to 4.8%. All included studies were of excellent methodological quality.
Conclusion
From the results of this systematic review, it can be concluded that the 30–15 IFT has excellent test–retest reliability for both maximal velocity and peak heart rate. The test may, therefore, be used as a reliable measure of fitness in research and sports practice.
Graphical abstract
Schematic representation of the study “Mapping human serum induced gene networks as a basis for the creation of biomimetic periosteum for bone repair.” (This figure was produced using Servier Medical Art.)
Image, graphical abstract
