Trial reportEuropean journal of sport science2025
Effect of Daily Social Media Use on Smartphones Before Training on Attack Efficiency and Repeated Vertical Jump Ability in Young Male Volleyball Players: A Randomized and Crossover Trial.
Trial report in European journal of sport science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper, 1 of them a synthesis that pooled it.
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
1 citing paper in PubMed, 1 synthesis or guideline pooled it.
- Effects of mental fatigue on lower-limb explosive power and anaerobic capacity: a systematic review and meta-analysis.Frontiers in physiology · 2026Pooled it
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
This investigation observed the repeated effect of using social media on smartphones immediately before training sessions on attack efficiency (AE) and repeat-vertical jumping ability (RVJA) in young volleyball athletes. A crossover study involved 14 volleyball athletes (17.57 ± 0.65 years of age). For three weeks, the athletes participated in their training routines under two experimental conditions: using social media (SMA) and watching documentaries (DOC), both for 30 min before the training sessions. Before and after the three weeks, the athletes had their AE and RVJA evaluated. The AE test consisted of performing 6 attacks, with the total score obtained by adding the product of the score and the speed of each attempt. RVJA was assessed using the intermittent vertical jump test of four sets of 15 s (IJT
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.