ArticleInternational journal of environmental research and public health2021
Isokinetic and Isometric Assessment of the Knee Joint Extensors and Flexors of Professional Volleyball Players.
Article in International journal of environmental research and public health, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06996990 (The Relationship Between Injury Risk and Pain, Fatigue, Muscle Strength, Balance and Quality of Life in Volleyball Players), which is not on this map. Cited by 9 papers, 1 of them a synthesis that pooled it.
What it found
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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.
The Relationship Between Injury Risk and Pain, Fatigue, Muscle Strength, Balance and Quality of Life in Volleyball Players
Who cites it
9 citing papers in PubMed, 1 synthesis or guideline pooled it, 10 citations in OpenAlex.
- Pooled it
- Effects of Rhythm Step Training on Foot and Lower Limb Balance in Children and Adolescents with Flat Feet: A Radiographic Analysis.Medicina (Kaunas, Lithuania) · 2024Trial
- A study on the correlation between knee muscle strength and agility in competitive Wushu Changquan athletes.Frontiers in physiology · 2026Article
- Article
- Field-to-laboratory biomechanical profiling of reactive strength index in male volleyball drop jumps.Frontiers in bioengineering and biotechnology · 2026Article
- Effects of repeated tDCS on lower limb muscle explosive strength and executive function in male collegiate volleyball players: a randomized controlled trial.Frontiers in physiology · 2026Article
- Normative isokinetic knee strength values and prediction models in non-athletic Chinese adults.Frontiers in bioengineering and biotechnology · 2025Article
- Countermovement Jump Performance Is Related to Ankle Flexibility and Knee Extensors Torque in Female Adolescent Volleyball Athletes.Journal of functional morphology and kinesiology · 2023Article
- Relationship between Isokinetic Knee Strength and Speed, Agility, and Explosive Power in Elite Soccer Players.International journal of environmental research and public health · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
10 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe main objective of this study was to evaluate the level of muscle strength by using isokinetic and isometric measurements-more specifically, the force ratio between the knee flexors and extensors (values of the torques).
methodsAn experimental group of elite volleyball players (n = 14) were compared to a control group (n = 14) of healthy non-athletes of comparable ages. Torque measurements were obtained under three concentric conditions (angular velocities of 60 °/s, 180 °/s, and 300 °/s) and one static condition by utilizing the Biodex System 3.
resultsIn all trials, the volleyball players achieved significantly higher peak torque (PT) values for both the extensors and flexors (
conclusionBased on a proper assessment of the strength ratio of the knee flexors and extensors, properly selected and implemented resistance training can improve the maximum strength and power production and reduce the incidence of injuries in volleyball.
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.