ArticleScientific reports2026
The 30-15 intermittent fitness test in male futsal players: reliability and validity properties.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The 30-15 Intermittent Fitness Test (30-15IFT) has become a common on-field method to assess the level of cardiorespiratory performance in sports. Although literature has suggested excellent reliability properties, the validity against objective measures has been mainly conducted in individual sports, while findings in team sport athletes like futsal are lacking. Therefore, the main purpose of the study was to examine the reliability and validity of the 30-15IFT. Fifty-eight U21 male futsal players (age = 20.10 ± 0.90 years; height = 177.14 ± 5.72 cm; weight = 67.31 ± 7.33 kg) were recruited. A within-subject test-retest with seven days apart between trials was conducted to examine the reliability of the 30-15IFT, while the criterion validity included estimated VO₂max derived from the 30-15IFT and laboratory measured VO₂max obtained from the continuous running test in laboratory conditions performed seven days prior the 30-15IFT.Results indicated very high reliability of the 30-15IFT for Vmax (ICC = 0.95; CV = 1.00%, p < 0.001), peak heart rate (HRpeak; ICC = 0.94; CV = 1.12%, p < 0.001) and maximal oxygen uptake (VO
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.