Introduction: Human body faces different changes through years which reflects on peopleʾs physical ability. Regular exercise and body movement contribute to maintain health and ability to practice every-day activities of older adults. All kinds of tissue, including muscle one, cannot avoid the consequences of aging. As far as muscle tissue is concerned, muscle flexibility is affected by collagen and elastin fibre changes. Purpose: The purpose of diploma work is to find out the impact of age, gender and pain on the hip and knee flexibility in older adults. Methods: Thirty-three volunteers (83.45 ± 7.47 age), eighteen of which were women and fifteen were men, without hip endoprosthesis and injuries participated in research. We measured the flexibility of hip flexors (m. iliopsoas in m. rectus femoris) and knee flexors (m. biceps femoris, m. semitendinosus, m. semimembranosus) with extendable goniometer. To determine the difference of muscle flexibility considering gender and pain, we performed Mann-Whitney test. We tested the correlation of age and pain to muscle flexibility with Spearman correlation coefficient (). The level of significance was set at p ⡤ 0.05. Results: We did not estimate any correlation between age and muscle flexibility. We identified statistically significant differences in hamstrings flexibility between men and women (p = 0.041), where women achieved statistically significant better results than men. Considering the pain, we did not identify statistically significant correlation and differences. Discussion and conclusion: The research has showed that there is a possibility for difference between gender and muscle flexibility of hip and knee joint. Results for pain and age do not show us any statistically significant difference and correlation between muscle flexibility and pain and any statistically significant correlation between muscle flexibility and age. In the future, it would be reasonable to carry out research with a larger sample of participants and study the impact of duration of living in a retirement home on muscle flexibility.
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