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Medicina is published by MDPI from Volume 54 Issue 1 (2018). Articles in this Issue were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence. Articles are hosted by MDPI on mdpi.com as a courtesy and upon agreement with Lithuanian Medical Association, Lithuanian University of Health Sciences, and Vilnius University.
Open AccessArticle

The Influence of Self-Stretching Based on Postisometrical Relaxation, Static Stretching Combined with Stabilizing Exercises, and Stabilizing Exercises Only on the Flexibility of One-Joint and Two-Joint Hip Flexors

1
Department of Physiotherapy, Józef Rusiecki University College in Olsztyn, Poland
2
Rehasport Clinic, Poland
3
Faculty of Physical Education and Sport, Józef Piłsudski University of Physical Education in Warsaw, Poland
4
Department of Rehabilitation, Medical Academy, Lithuanian University of Health Sciences, Lithuania
5
Department of Rehabilitation, Physical and Sports Medicine, Faculty of Medicine, Vilnius University, Lithuania
6
Clinic of Rehabilitation, Faculty of Medical Science, University of Warmia and Mazury in Olsztyn, Poland
*
Author to whom correspondence should be addressed.
Medicina 2013, 49(10), 69; https://doi.org/10.3390/medicina49100069
Received: 26 October 2012 / Accepted: 30 October 2013 / Published: 4 November 2013
Background and Objective. The limitations of muscle flexibility are a common dysfunction of the musculoskeletal system. Therefore, various therapeutic techniques are used in rehabilitation programs to increase their flexibility. The aim of this prospective, randomized, single-blind study was to evaluate the changes in the flexibility of hip flexors in children who participated in a 6-week therapeutic program consisting of one physiotherapy session per week with a physiotherapist and daily home exercises.
Material and Methods
. A total of 94 children aged 10–13 years were randomly assigned to 3 experimental groups: postisometrical relaxation group (PIR group), static stretching combined with stabilizing exercise group (SE/SS group), and stabilizing exercise group (SS group). To assess the flexibility of one- and two-joint hip flexors, the modified Thomas test was used. The examination was conducted by blinded observers.
Results
. A significant improvement in the flexibility of one-joint hip flexors was documented in all 3 groups (P<0.01). The flexibility of two-joint hip flexors increased significantly only in the SS/SE group (P<0.05). After the program, the highest range of motion of the hip extension (test for one-joint hip flexors) was recorded in the SS/SE group (20.6°±4.5°), and it was significantly greater than in the SE group (16.6°±4.0°, P<0.05). There were no significant differences in the knee flexion (test for two-joint hip flexors) among all 3 groups (P>0.05).
Conclusions
. The 6-week therapeutic program regardless of the technique applied (postisometrical muscle relaxation, static stretching with stabilizing exercises, and stabilizing exercises only) resulted in the increased flexibility of one-joint hip flexors. Only static stretching combined with stabilizing exercises led to a significant increase in the flexibility of two-joint hip flexors.
Keywords: flexibility of hip flexors; postisometrical relaxation; static stretching; stabilizing exercises flexibility of hip flexors; postisometrical relaxation; static stretching; stabilizing exercises
MDPI and ACS Style

Czaprowski, D.; Leszczewska, J.; Kolwicz, A.; Pawłowska, P.; Kędra, A.; Kriščiūnas, A.; Raistenskis, J.; Kowalski, I.M. The Influence of Self-Stretching Based on Postisometrical Relaxation, Static Stretching Combined with Stabilizing Exercises, and Stabilizing Exercises Only on the Flexibility of One-Joint and Two-Joint Hip Flexors. Medicina 2013, 49, 69.

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