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Chaari F, Rahmani A, Rebai H, Fendri T, Sahli S, Boyas S. Core stability is associated with dynamic postural balance in soccer players experiencing groin pain without time-loss. J Orthop 2024; 53:1-6. [PMID: 38450062 PMCID: PMC10911967 DOI: 10.1016/j.jor.2024.02.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Accepted: 02/24/2024] [Indexed: 03/08/2024] Open
Abstract
Objectives The study sought to evaluate possible relationships between dynamic postural balance and pain, core stability, and hip range of motion in soccer players who were experiencing groin pain (GP). Furthermore, the study aimed to compare these measurements in symptomatic and asymptomatic players. Methods The study included 42 male soccer players experiencing GP and an equal number of asymptomatic players. Dynamic postural balance, pain, hip range of motion and trunk endurance were measured. Results The GP group revealed reduced dynamic balance performance (p < 0.01-0.001) in injured and non-injured limbs compared to control group. Further, players experiencing GP demonstrated lower hip range of motion in internal (p < 0.05) and total rotations (p < 0.01) in the injured limb, and lower trunk endurance (p < 0.001) compared to their asymptomatic peers. In general, core stability was associated (r = 0.13-0.61, p < 0.05-0.001) with the poor dynamic balance performance in the GP group while standing on injured and non-injured limbs. No significant correlations between dynamic postural balance, pain and hip range of motion were observed. Conclusion Poor core endurance was found to be associated with dynamic balance disorders in soccer players experiencing GP. This information can aid in the development of targeted strategies to enhance dynamic postural balance in these players.
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Affiliation(s)
- Fatma Chaari
- Research Laboratory Education, Motricité, Sport et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Tunisia
- Research Laboratory, Movement - Interactions, Performance, MIP, UR4334, Faculty of Sciences and Technologies, Le Mans, France
| | - Abderrahmane Rahmani
- Research Laboratory, Movement - Interactions, Performance, MIP, UR4334, Faculty of Sciences and Technologies, Le Mans, France
| | - Haithem Rebai
- Tunisian Research Laboratory ‘Sports Performance Optimization (LR09SEP01), National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia
| | - Thouraya Fendri
- Research Laboratory Education, Motricité, Sport et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Tunisia
- Research Laboratory, Movement - Interactions, Performance, MIP, UR4334, Faculty of Sciences and Technologies, Le Mans, France
| | - Sonia Sahli
- Research Laboratory Education, Motricité, Sport et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Tunisia
| | - Sébastien Boyas
- Research Laboratory, Movement - Interactions, Performance, MIP, UR4334, Faculty of Sciences and Technologies, Le Mans, France
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The Influence of Anticipation of Movement Starting Time on Feedforward Activation of Trunk Muscles During Rapid Shoulder Joint Movements. J Hum Kinet 2022; 84:43-52. [DOI: 10.2478/hukin-2022-000073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Abstract
This study aimed to clarify the differences in the onset of trunk muscle activity with and without anticipation of the movement starting time during rapid shoulder movements. Ten healthy men in a relaxed upright position performed rapid 135° flexion, 135° abduction, and 45° extension of the shoulder on the dominant hand side with and without anticipation of the movement starting time. They moved their shoulder joints following a 3-s countdown and a light stimulus in the anticipation and non-anticipation conditions, respectively. Electromyography of the anterior and posterior quadratus lumborum, transversus abdominis, internal oblique, external oblique, rectus abdominis, lumbar multifidus, lumbar erector spinae on the non-dominant hand side, and the middle deltoid on the dominant hand side were measured. The onset of activity of each trunk muscle relative to the onset of the middle deltoid was calculated. Two-way analysis of variance (eight trunk muscles × two anticipation conditions) was used to compare the onset of electromyographic activity of the trunk muscles in each direction of the shoulder movement. There were significant interactions between the muscles and anticipation conditions during shoulder abduction and extension. The onset of activity in the anterior and posterior quadratus lumborum, transversus abdominis, and internal oblique occurred earlier with anticipation of the movement starting time than without anticipation during shoulder abduction and extension. The anticipation of movement starting time may contribute to a reliable center of mass control within the support base and improve lumbar spine stability by hastening the onset of activity of the deep trunk muscles.
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Oshikawa T, Adachi G, Akuzawa H, Okubo Y, Kaneoka K. Coordinate activity of the quadratus lumborum posterior layer, lumbar multifidus, erector spinae, and gluteus medius during single-leg forward landing. J Electromyogr Kinesiol 2021; 61:102605. [PMID: 34563761 DOI: 10.1016/j.jelekin.2021.102605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 08/20/2021] [Accepted: 09/17/2021] [Indexed: 10/20/2022] Open
Abstract
This study aimed to clarify the differences in electromyographic activity between the quadratus lumborum anterior (QL-a) and posterior layers (QL-p), and the relationship among trunk muscles and gluteus medius (GMed) activities during forward landing. Thirteen healthy men performed double-leg and single-leg (ipsilateral or contralateral sides as the electromyography measurement of trunk muscles) forward landings from a 30 cm-height-box. The onset of electromyographic activity in pre-landing and the electromyographic amplitude of the unilateral QL-a, QL-p, abdominal muscles, lumbar multifidus (LMF), erector spinae (LES), and bilateral GMed were recorded. Two-way ANOVA was used to compare the onset of electromyographic activity (3 landing leg conditions × 10 muscles) and electromyographic amplitude among (3 landing leg conditions × 2 phases). The onset of QL-p was significantly earlier in contralateral-leg landing than in the double-leg and ipsilateral-leg landings. The onset of LMF and LES was significantly earlier than that of the abdominal muscles in contralateral-leg landing. QL-p activity and GMed activity on the contralateral leg side in the pre-landing were significantly higher in contralateral-leg landing than in the other leg landings. To prepare for pelvic and trunk movements after ground contact, LMF, LES, QL-p on non-support leg side, and GMed on support leg side showed early or high feedforward activation before ground contact during single-leg forward landing.
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Affiliation(s)
| | - Gen Adachi
- Faculty of Sport Sciences, Waseda University, Tokyo, Japan
| | - Hiroshi Akuzawa
- Waseda Institute for Sport Sciences, Waseda University, Tokyo, Japan
| | - Yu Okubo
- Faculty of Health & Medical Care, Saitama Medical University, Saitama, Japan
| | - Koji Kaneoka
- Waseda Institute for Sport Sciences, Waseda University, Tokyo, Japan
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