Isoinertial Training in Futsal Players: A Scoping Review of Current Evidence and Research Gaps

Abstract

Futsal demands high-intensity neuromuscular performance, making the optimisation of strength and power crucial. Isoinertial training, known for its eccentric overload, has shown potential to enhance these qualities. This scoping review aimed to identify and map the available literature and identify research gaps regarding the application of isoinertial training in futsal. Following PRISMA-ScR guidelines, searches were conducted across Scopus, Web of Science, and ScienceDirect up to June 2025. Controlled trials involving isoinertial training in futsal and assessments of physical performance were included. Study selection, data extraction, and methodological quality assessment (PEDro scale) were conducted independently. Of 11 records identified, only one controlled trial met the inclusion criteria. This study (PEDro score: 6/10) included 10 semi-professional players and compared 8 weeks of isoinertial training (1 session/week) with bodyweight training. No significant improvements were found in vertical jump performance. However, significant gains were observed in linear speed (p < 0.05; ES = 1.05) and change-of-direction speed (p < 0.01; ES = 6.03), notably 2 weeks post-intervention. Evidence on isoinertial training in futsal is extremely limited. Preliminary findings suggest it may improve speed-related performance but not jumping ability, highlighting a significant gap in current research.