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Raeder C, Kämper M, Praetorius A, Tennler JS, Schoepp C. Metabolic, cognitive and neuromuscular responses to different multidirectional agility-like sprint protocols in elite female soccer players - a randomised crossover study. BMC Sports Sci Med Rehabil 2024; 16:64. [PMID: 38448940 PMCID: PMC10916312 DOI: 10.1186/s13102-024-00856-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 02/22/2024] [Indexed: 03/08/2024]
Abstract
PURPOSE Resistance to fatigue is a key factor in injury prevention that needs to be considered in return-to-sport (RTS) scenarios, especially after severe knee ligament injuries. Fatigue should be induced under game-like conditions. The SpeedCourt (SC) is a movement platform for assessing multidirectional sprint performance, typical of game-sports, due to change-of-direction movements in response to a visual stimulus. Designing adequate fatigue protocols requires the suitable arrangement of several loading variables such as number of intervals, sprint distance or work/relief ratio (W:R). Therefore, this study analysed the acute fatigue effects of different SC protocols on metabolic load, cognitive function and neuromuscular performance. METHODS Eighteen female soccer players (mean ± SD; age: 23.1 ± 4.6 years) of the 1st German Division participated in this randomised, crossover study. Using a random allocation sequence, players completed four volume-equated protocols differing in W:R and sprint distance per interval (P1:12 × 30 m, W:R = 1:2 s; P2:12 × 30 m, W:R = 1:3 s; P3:18 × 20 m, W:R = 1:2 s; P4:18 × 20 m, W:R = 1:3 s). Pre- and post-exercise, metabolic load was measured per blood lactate concentration (BLaC), cognitive function per reaction time (RT), and neuromuscular performance including multiple rebound jumps (MRJ height, primary outcome variable; Reactive Strength Index, RSI) and 5 m sprint times (SP5). RESULTS Repeated-measures ANOVA revealed significant main time effects (p < .05) with improved performance post-exercise in RT (504 vs. 482 ms, d = 1.95), MRJ height (24.0 vs. 24.8 cm, d = 0.77), RSI (1.39 vs. 1.43, d = 0.52), and SP5 (1.19 vs. 1.17 s, d = 0.56). There was significant main time (p < .001) and time x protocol interaction effects in BLaC (p < .001). P1 induced higher BLaC values (4.52 ± 1.83 mmol/L) compared to P2 (3.79 ± 1.83 mmol/L; d = 0.74) and P4 (3.12 ± 1.83 mmol/L; d = 1.06), whereas P3 (4.23 ± 1.69 mmol/L) elicited higher BLaC values compared to P4 (d = 0.74). CONCLUSION All protocols caused an improved cognitive function and neuromuscular performance. The former may be related to enhanced noradrenergic activation or exercise specificity which induced an improved stimulus processing. The latter may be explained by a possible post-activation performance enhancement effect on jump and sprint performance. A shorter relief duration in W:R as opposed to sprint distance per interval produced higher BLaC values. The protocols may serve as reference data for improved RTS decision-making in elite female soccer players. TRIAL REGISTRATION Deutsches Register Klinischer Studien (DRKS), No.: DRKS00033496 , Registered 19. Februar 2024, Retrospectively Registered.
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Affiliation(s)
- Christian Raeder
- Department of Arthroscopy Surgery, Sports Traumatology and Sports Medicine, BG Klinikum Duisburg, Duisburg, Germany.
| | - Meike Kämper
- Women´s Soccer Department, MSV Duisburg, Duisburg, Germany
| | - Arthur Praetorius
- Department of Arthroscopy Surgery, Sports Traumatology and Sports Medicine, BG Klinikum Duisburg, Duisburg, Germany
| | - Janina-Sophie Tennler
- Department of Arthroscopy Surgery, Sports Traumatology and Sports Medicine, BG Klinikum Duisburg, Duisburg, Germany
| | - Christian Schoepp
- Department of Arthroscopy Surgery, Sports Traumatology and Sports Medicine, BG Klinikum Duisburg, Duisburg, Germany
- Department of Trauma and Reconstructive Surgery, University Hospital Essen, Essen, Germany
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Xu D, Zhou H, Quan W, Gusztav F, Baker JS, Gu Y. Adaptive neuro-fuzzy inference system model driven by the non-negative matrix factorization-extracted muscle synergy patterns to estimate lower limb joint movements. Comput Methods Programs Biomed 2023; 242:107848. [PMID: 37863010 DOI: 10.1016/j.cmpb.2023.107848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 09/16/2023] [Accepted: 10/05/2023] [Indexed: 10/22/2023]
Abstract
BACKGROUND AND OBJECTIVE For patients with movement disorders, the main clinical focus is on exercise rehabilitation to help recover lost motor function, which is achieved by relevant assisted equipment. The basis for seamless control of the assisted equipment is to achieve accurate inference of the user's movement intentions in the human-machine interface. This study proposed a novel movement intention detection technology for estimating lower limb joint continuous kinematic variables following muscle synergy patterns, to develop applications for more efficient assisted rehabilitation training. METHODS This study recruited 16 healthy males and 16 male patients with symptomatic patellar tendinopathy (VISA-P: 59.1 ± 8.7). The surface electromyography of 12 muscles and lower limb joint kinematic and kinetic data from healthy subjects and patients during step-off landings from 30 cm-high stair steps were collected. We subsequently solved the preprocessed data based on the established recursive model of second-order differential equation to obtain the muscle activation matrix, and then imported it into the non-negative matrix factorization model to obtain the muscle synergy matrix. Finally, the lower limb neuromuscular synergy pattern was then imported into the developed adaptive neuro-fuzzy inference system non-linear regression model to estimate the human movement intention during this movement pattern. RESULTS Six muscle synergies were determined to construct the muscle synergy pattern driven ANFIS model. Three fuzzy rules were determined in most estimation cases. Combining the results of the four error indicators across the estimated variables indicates that the current model has excellent estimated performance in estimating lower limb joint movement. The estimation errors between the healthy (Angle: R2=0.98±0.03; Torque: R2=0.96±0.04) and patient (Angle: R2=0.98±0.02; Torque: R2=0.96±0.03) groups are consistent. CONCLUSION The proposed model of this study can accurately and reliably estimate lower limb joint movements, and the effectiveness will also be radiated to the patient group. This revealed that our models also have certain advantages in the recognition of motor intentions in patients with relevant movement disorders. Future work from this study can be focused on sports rehabilitation in the clinical field by achieving more flexible and precise movement control of the lower limb assisted equipment to help the rehabilitation of patients.
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Affiliation(s)
- Datao Xu
- Faculty of Sports Science, Ningbo University, Ningbo 315211, China; Faculty of Engineering, University of Pannonia, Veszprém 8201, Hungary; Savaria Institute of Technology, Eötvös Loránd University, Szombathely 9700, Hungary
| | - Huiyu Zhou
- Faculty of Sports Science, Ningbo University, Ningbo 315211, China; School of Health and Life Sciences, University of the West of Scotland, Scotland G72 0LH, United Kingdom
| | - Wenjing Quan
- Faculty of Sports Science, Ningbo University, Ningbo 315211, China; Faculty of Engineering, University of Pannonia, Veszprém 8201, Hungary; Savaria Institute of Technology, Eötvös Loránd University, Szombathely 9700, Hungary
| | - Fekete Gusztav
- Faculty of Engineering, University of Pannonia, Veszprém 8201, Hungary; Savaria Institute of Technology, Eötvös Loránd University, Szombathely 9700, Hungary
| | - Julien S Baker
- Department of Sport and Physical Education, Hong Kong Baptist University, Hong Kong 999077, China
| | - Yaodong Gu
- Faculty of Sports Science, Ningbo University, Ningbo 315211, China.
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Abstract
With the gradual increase of the aging population in Chinese society, the incidence of knee osteoarthritis showed an increasing trend. However, there are very few practical solutions for it. As a novel neuromuscular training technique, whole-body vibration training has become a candidate for treating knee osteoarthritis. In this review, we firstly elaborated on the mode of action and influence factors of the whole-body vibration training. Next, we summarized its effects in knee osteoarthritis, including improving knee function and some uncertain muscle function and proprioception effects. Next, we also summarized its possible mechanisms, including improving bone microstructure, delaying articular cartilage degeneration, modulating inflammatory cells and inflammatory factors. Then, we summarized the clinical effectiveness of whole-body vibration training by analyzing some clinical randomized controlled trials. Finally, based on the above summary, we analyzed and listed the limitations of whole-body vibration training in treating knee osteoarthritis and found the shortcomings in the existing studies. This review provides ideas for the future application of whole-body vibration training in the treatment of knee osteoarthritis.
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Affiliation(s)
- Zheng Wang
- School of Kinesiology, Shenyang Sport University, 110102 Shenyang, China; No. 36 Jinqiansong East Road, 110102 Shenyang, China
| | - Xinan Zhang
- School of Kinesiology, Shenyang Sport University, 110102 Shenyang, China; No. 36 Jinqiansong East Road, 110102 Shenyang, China.
| | - Mingli Sun
- School of Kinesiology, Shenyang Sport University, 110102 Shenyang, China; No. 36 Jinqiansong East Road, 110102 Shenyang, China.
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Hou ZC, Miao X, Ao YF, Hu YL, Jiao C, Guo QW, Xie X, Zhao F, Pi YB, Li N, Zhang ZY, Jiang D. Characteristics and predictors of muscle strength deficit in mechanical ankle instability. BMC Musculoskelet Disord 2020; 21:730. [PMID: 33172443 PMCID: PMC7654059 DOI: 10.1186/s12891-020-03754-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Accepted: 10/29/2020] [Indexed: 12/26/2022] Open
Abstract
Purpose Muscle strength training is a common strategy for treating chronic ankle instability (CAI), but the effectiveness decreases for mechanical ankle instability (MAI) patients with initial severe ligament injuries. The purpose of this study was to investigate the characteristics and the potential predictors of muscle strength deficit in MAI patients, with a view to proposing a more targeted muscle strength training strategy. Methods A total of 220 MAI patients with confirmed initial lateral ankle ligament rupture and a postinjury duration of more than 6 months were included. All patients underwent a Biodex isokinetic examination of the ankle joints of both the affected and unaffected sides. Then, the associations between the limb symmetry index (LSI) (mean peak torque of the injury side divided by that of the healthy side) and the patients’ sex, body mass index, postinjury duration, presence of intra-articular osteochondral lesions, presence of osteophytes and ligament injury pattern (i.e., isolated anterior talofibular ligament (ATFL) injury or combined with calcaneofibular ligament injury) were analysed. Results There was significantly weaker muscle strength on the affected side than on the unaffected side in all directions (p < 0.05). The LSI in plantar flexion was significantly lower than that in dorsiflexion at 60°/s (0.87 vs 0.98, p < 0.001). A lower LSI in eversion was significantly correlated with female sex (0.82 vs 0.94, p = 0.016) and isolated ATFL injury (0.86 vs 0.95, p = 0.012). No other factors were found to be associated with muscle strength deficits. Conclusion MAI patients showed significant muscle strength deficits on the affected side, especially in plantar flexion. There were greater strength deficits in eversion in females and individuals with an isolated ATFL injury. Thus, a muscle strength training programme for MAI patients was proposed that focused more on plantar flexion training and eversion training for females and those with an isolated ATFL injury. Supplementary Information The online version contains supplementary material available at 10.1186/s12891-020-03754-9.
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Affiliation(s)
- Zong-Chen Hou
- Institute of Sports Medicine, Peking University Third Hospital, Beijing Key Laboratory of Sports Injuries, No.49 North Garden Road, Haidian, Beijing, 100191, China
| | - Xin Miao
- Institute of Sports Medicine, Peking University Third Hospital, Beijing Key Laboratory of Sports Injuries, No.49 North Garden Road, Haidian, Beijing, 100191, China
| | - Ying-Fang Ao
- Institute of Sports Medicine, Peking University Third Hospital, Beijing Key Laboratory of Sports Injuries, No.49 North Garden Road, Haidian, Beijing, 100191, China
| | - Yue-Lin Hu
- Institute of Sports Medicine, Peking University Third Hospital, Beijing Key Laboratory of Sports Injuries, No.49 North Garden Road, Haidian, Beijing, 100191, China
| | - Chen Jiao
- Institute of Sports Medicine, Peking University Third Hospital, Beijing Key Laboratory of Sports Injuries, No.49 North Garden Road, Haidian, Beijing, 100191, China
| | - Qin-Wei Guo
- Institute of Sports Medicine, Peking University Third Hospital, Beijing Key Laboratory of Sports Injuries, No.49 North Garden Road, Haidian, Beijing, 100191, China
| | - Xing Xie
- Institute of Sports Medicine, Peking University Third Hospital, Beijing Key Laboratory of Sports Injuries, No.49 North Garden Road, Haidian, Beijing, 100191, China
| | - Feng Zhao
- Institute of Sports Medicine, Peking University Third Hospital, Beijing Key Laboratory of Sports Injuries, No.49 North Garden Road, Haidian, Beijing, 100191, China
| | - Yan-Bin Pi
- Institute of Sports Medicine, Peking University Third Hospital, Beijing Key Laboratory of Sports Injuries, No.49 North Garden Road, Haidian, Beijing, 100191, China
| | - Nan Li
- Research Center of Clinical Epidemiology, Peking University Third Hospital, No.49 North Garden Road, Haidian, Beijing, 100191, China
| | - Zhi-Yu Zhang
- Institute of Sports Medicine, Peking University Third Hospital, Beijing Key Laboratory of Sports Injuries, No.49 North Garden Road, Haidian, Beijing, 100191, China
| | - Dong Jiang
- Institute of Sports Medicine, Peking University Third Hospital, Beijing Key Laboratory of Sports Injuries, No.49 North Garden Road, Haidian, Beijing, 100191, China.
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Yandun F, Auat Cheein FA, Lorca D, Acevedo O, Auat Cheein C. Design and evaluation of sound-based electronic football soccer training system for visually impaired athletes. Biomed Eng Online 2019; 18:76. [PMID: 31234912 PMCID: PMC6591927 DOI: 10.1186/s12938-019-0695-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Accepted: 06/12/2019] [Indexed: 11/12/2022] Open
Abstract
Background Several countries encourage the practice of football for rehabilitation and social inclusion purposes. For visually impaired people, football is purely sound-based, where the ball and the players are constantly emitting sounds for localization purposes in the field. However, the task of shooting the ball requires of a non-visually impaired extra person, behind the goal (known as caller), whom is punching the four corner of such goal to help the athletes. The presence of the caller restricts the self-sufficiency of the players. This work addresses such problem, by presenting a goal for visually impaired players with the aim of enhancing their self-sufficiency. Materials and methods The electronic goal is designed with four functionalities for training purposes, by returning sound-based feedback of its position and the places where the ball has impacted. The system is validated with seven volunteers from Chilean Football Soccer National Team. A questionnaire was answered by the players before and after the tests to statically validate the proposed device. Results The presented system is portable and designed following a modular criterion suitable for visually impaired people self-assembling. From a test of 350 shootings, the electronic goal showed to enhance the shooting assertiveness from 82 to 92%, and the accuracy from 20 to 56% compared to the traditional caller. Conclusions The electronic goal showed to enhance the self-sufficiency of athletes, by improving their assertiveness in shooting training. Nevertheless, and according to the responses to the questionnaires, the system needs improvements in its portability and handling.
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Affiliation(s)
- Francisco Yandun
- Department of Electronic Engineering, Universidad Técnica Federico Santa María, Av. España 1680, Valparaiso, Chile
| | - Fernando A Auat Cheein
- Department of Electronic Engineering, Universidad Técnica Federico Santa María, Av. España 1680, Valparaiso, Chile.
| | - Daniela Lorca
- Facultad de Arquitectura, Universiad de Valparaíso, Blanco 951, Valparaiso, Chile
| | - Omar Acevedo
- Facultad de Arquitectura, Universiad de Valparaíso, Blanco 951, Valparaiso, Chile
| | - Cecilia Auat Cheein
- Facultad de Ciencias Médicas, Universidad Nacional de Santiago del Estero, Santiago del Estero, Argentina
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Abstract
Soccer is one of the most popular sports in the world. It has undergone many changes in recent years, mainly because of increased physical demands, and this has led to an increased injury risk. Direct contact accounts for half of all injuries in both indoor and outdoor soccer and ankle sprains are the most common foot and ankle injury. There is a spectrum of foot and ankle injuries and their treatment should be individualized in these high-demand patients. An injury prevention program is also important and should the players, the trainer, responsible physician, and physical therapists.
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Affiliation(s)
- Caio Nery
- Foot and Ankle Clinic, UNIFESP - Escola Paulista de Medicina, São Paulo, São Paulo, Brazil.
| | - Fernando Raduan
- UNIFESP - Escola Paulista de Medicina, São Paulo, São Paulo, Brazil
| | - Daniel Baumfeld
- UFMG - Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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