DIFFERENTIAL DIAGNOSIS OF GRIP STRENGTH DEVELOPMENT IN INDIVIDUALS WITH OCCUPATIONAL AND PATHOLOGICAL HYPERMOBILITY: A PILOT STUDY
DOI:
https://doi.org/10.32782/2522-1795.2025.19.1.16Keywords:
grip strength, hypermobility, performance rehabilitation, rehabilitation, training program, dynamometry, differential diagnosis, physical therapy, muscle adaptationAbstract
Grip strength is a fundamental measure of muscle function and rehabilitation potential. Hypermobility syndromes, including Joint Hypermobility Syndrome (JHS) and Hypermobile Ehlers-Danlos Syndrome (hEDS), are associated with joint instability and impaired neuromuscular coordination, potentially affecting strength development. The purpose of the study is to assess the impact of hypermobility on grip strength development in professional circus performers and office workers over a six-month training period. Materials and methods. The study included 40 participants divided into four groups: circus performers with hypermobility (Group A) and without hypermobility (Group B), as well as office workers with hypermobility (Group C) and a control group without hypermobility (Group D). Grip strength was measured monthly using a hand dynamometer. Statistical analysis included ANOVA, paired t-tests, and correlation analysis (p < 0.05). Results. Initial analysis showed that circus performers had higher baseline grip strength than office workers, while hypermobility was associated with lower strength levels regardless of occupational profile. The greatest improvement was observed in circus performers without hypermobility (+20–25%), while the lowest improvement was recorded in office workers with hypermobility (+5–8%). ANOVA confirmed significant differences between groups (p < 0.001), and correlation analysis (r = 0.85) indicated that participants with higher baseline grip strength achieved greater improvements. Conclusions. The obtained data indicate a significant impact of hypermobility on baseline grip strength and its development during training. Specifically, hypermobility serves as a limiting factor for muscular adaptation, particularly in inactive individuals. Occupational activity plays a crucial role in shaping muscular endurance, as evidenced by the higher rate of grip strength development among circus performers. Thus, the results of this study highlight the need for personalized training programs for individuals with hypermobility, considering their physiological characteristics. Adapted training methods may contribute to enhancing joint stability, improving muscular coordination, and optimizing physical performance in this population.
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