Muscle Strength Testing in Sports and Rehabilitation

A special issue of Sports (ISSN 2075-4663).

Deadline for manuscript submissions: 31 December 2025 | Viewed by 790

Special Issue Editor


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Guest Editor
Department of Sport Science, Linnaeus University, 39182 Kalmar, Sweden
Interests: sports medicine; strength training; hamstring injury; ACL injury
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Special Issue Information

Dear Colleagues,

Muscle strength is a cornerstone of athletic performance, injury prevention, and successful rehabilitation. The accurate assessment of muscle strength—whether isometric, isotonic, or isokinetic—plays a crucial role in clinical decision making, return-to-sport criteria, and performance monitoring across diverse populations. Over the recent decades, the field has evolved from labor-intensive laboratory testing to more accessible and field-based assessments, expanding both its clinical applicability and research utility.

This Special Issue aims to highlight current advancements, challenges, and innovations in muscle strength testing across sports and rehabilitation contexts. Topics of interest include the reliability and validity of different strength assessment methods, early-phase force production, bilateral asymmetries, normative profiling, sport-specific applications, and strength test battery design. Contributions that explore the relationship between strength measures and functional performance, injury risk, or return-to-play outcomes are particularly welcome.

We encourage original research, methodological papers, and high-quality reviews that critically examine how muscle strength is measured, interpreted, and applied to both elite and general populations. Our goal is to foster interdisciplinary dialogue and provide a platform for evidence-based practices that can guide clinicians, coaches, and researchers alike.

Dr. Jesper Augustsson
Guest Editor

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Keywords

  • muscle strength
  • isometric testing
  • isotonic testing
  • force–time characteristics
  • rehabilitation
  • injury prevention
  • performance diagnostics
  • isokinetic dynamometry
  • return to sport
  • testing protocols

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Published Papers (1 paper)

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Research

11 pages, 1037 KB  
Article
The Impact of Jump Type on Muscle Contractile Behavior: Fatigue or Potentiation After Countermovement and Stiffness Jumps?
by Vedran Dukarić, Ivan Bon and Marijo Baković
Sports 2025, 13(12), 437; https://doi.org/10.3390/sports13120437 - 4 Dec 2025
Viewed by 333
Abstract
Jumping exercises are widely applied in sport performance and conditioning due to their crucial role in enhancing neuromuscular function and lower-limb power. Acute effects related to contractile properties measured by tensiomyography (TMG) remain insufficiently explored. This study aimed to examine the acute effects [...] Read more.
Jumping exercises are widely applied in sport performance and conditioning due to their crucial role in enhancing neuromuscular function and lower-limb power. Acute effects related to contractile properties measured by tensiomyography (TMG) remain insufficiently explored. This study aimed to examine the acute effects of two jump types—bilateral countermovement jumps (CMJs) and stiffness jumps (STs)—on the contractile properties of the vastus medialis (VM) and medial gastrocnemius (GM) muscles. Twenty-nine kinesiology students (fourteen males, fifteen females; age 19.4 ± 0.7 years) performed CMJ and ST protocols in a randomized order. Muscle contractile characteristics were measured before and immediately after each protocol and analyzed using a mixed-model repeated-measures ANOVA. Significant pre–post changes were found in both muscles. In the VM, contraction (Tc) and delay (Td) times decreased (p < 0.01), indicating faster responses, whereas relaxation time (Tr) increased and sustain time (Ts) decreased (p < 0.05), suggesting temporary fatigue. Maximal displacement (Dm) increased (p < 0.01), indicating reduced stiffness. In contrast, the GM showed greater responsiveness after stiffness jumps, characterized by shorter Tc and Td (p < 0.01), and reduced endurance after CMJs. These findings highlight muscle specific neuromuscular adaptations and provide practical insights for optimizing warm-up, training, and rehabilitation protocols through targeted jump selection. Full article
(This article belongs to the Special Issue Muscle Strength Testing in Sports and Rehabilitation)
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