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Evans S. Sacroiliac Joint Dysfunction in Endurance Runners Using Wearable Technology as a Clinical Monitoring Tool: Systematic Review. JMIR BIOMEDICAL ENGINEERING 2024; 9:e46067. [PMID: 38875697 PMCID: PMC11148519 DOI: 10.2196/46067] [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: 01/28/2023] [Revised: 10/02/2023] [Accepted: 10/30/2023] [Indexed: 06/16/2024] Open
Abstract
BACKGROUND In recent years, researchers have delved into the relationship between the anatomy and biomechanics of sacroiliac joint (SIJ) pain and dysfunction in endurance runners to elucidate the connection between lower back pain and the SIJ. However, the majority of SIJ pain and dysfunction cases are diagnosed and managed through a traditional athlete-clinician arrangement, where the athlete must attend regular in-person clinical appointments with various allied health professionals. Wearable sensors (wearables) are increasingly serving as a clinical diagnostic tool to monitor an athlete's day-to-day activities remotely, thus eliminating the necessity for in-person appointments. Nevertheless, the extent to which wearables are used in a remote setting to manage SIJ dysfunction in endurance runners remains uncertain. OBJECTIVE This study aims to conduct a systematic review of the literature to enhance our understanding regarding the use of wearables in both in-person and remote settings for biomechanical-based rehabilitation in SIJ dysfunction among endurance runners. In addressing this issue, the overarching goal was to explore how wearables can contribute to the clinical diagnosis (before, during, and after) of SIJ dysfunction. METHODS Three online databases, including PubMed, Scopus, and Google Scholar, were searched using various combinations of keywords. Initially, a total of 4097 articles were identified. After removing duplicates and screening articles based on inclusion and exclusion criteria, 45 articles were analyzed. Subsequently, 21 articles were included in this study. The quality of the investigation was assessed using the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) evidence-based minimum set of items for reporting in systematic reviews. RESULTS Among the 21 studies included in this review, more than half of the investigations were literature reviews focusing on wearable sensors in the diagnosis and treatment of SIJ pain, wearable movement sensors for rehabilitation, or a combination of both for SIJ gait analysis in an intelligent health care setting. As many as 4 (19%) studies were case reports, and only 1 study could be classified as fully experimental. One paper was classified as being at the "pre" stage of SIJ dysfunction, while 6 (29%) were identified as being at the "at" stage of classification. Significantly fewer studies attempted to capture or classify actual SIJ injuries, and no study directly addressed the injury recovery stage. CONCLUSIONS SIJ dysfunction remains underdiagnosed and undertreated in endurance runners. Moreover, there is a lack of clear diagnostic or treatment pathways using wearables remotely, despite the availability of validated technology. Further research of higher quality is recommended to investigate SIJ dysfunction in endurance runners and explore the use of wearables for rehabilitation in remote settings.
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Affiliation(s)
- Stuart Evans
- School of Education, La Trobe University, Melbourne, Australia
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Gaiesky SKT, Fridman L, Michie T, Blazey P, Tran N, Schneeberg A, Napier C. The one-week and three-month reliability of acceleration outcomes from an insole-embedded inertial measurement unit during treadmill running. Sports Biomech 2023:1-15. [PMID: 37941419 DOI: 10.1080/14763141.2023.2275258] [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: 03/10/2023] [Accepted: 10/17/2023] [Indexed: 11/10/2023]
Abstract
Inertial measurement units (IMUs) represent an exciting opportunity for researchers to broaden our understanding of running-related injuries, and for clinicians to expand their application of running gait analysis. The primary aim of our study was to investigate the 1-week (short-term) and 3-month (long-term) reliability of peak resultant, vertical, and anteroposterior accelerations derived from insole-embedded IMUs. The secondary aim was to assess the reliability of peak acceleration variability and left-right limb symmetry in all directions over the short and long term. A sample of healthy adult rearfoot runners (n = 23; age 41.7 ± 11.2 years) ran at a variety of speeds (2.5 m/s, 3.0 m/s, and 3.5 m/s) on a treadmill in standardised footwear with insole-embedded IMUs in each shoe. Peak accelerations exhibited good to excellent short-term reliability and moderate to excellent long-term reliability in all directions. Peak acceleration variability showed poor to good short- and long-term reliability, whereas the symmetry of peak accelerations demonstrated moderate to excellent and moderate to good short- and long-term reliability, respectively. Our results demonstrate how insole-embedded IMUs represent a viable option for clinicians to measure peak accelerations within the clinic.
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Affiliation(s)
- Sean K T Gaiesky
- Department of Biomedical Physiology & Kinesiology, Simon Fraser University, Metro Vancouver, BC, Canada
| | | | - Tom Michie
- Department of Biomedical Physiology & Kinesiology, Simon Fraser University, Metro Vancouver, BC, Canada
- Centre for Aging SMART, Vancouver Coastal Health Research Institute, Vancouver, BC, Canada
| | - Paul Blazey
- Centre for Aging SMART, Vancouver Coastal Health Research Institute, Vancouver, BC, Canada
| | | | | | - Christopher Napier
- Department of Biomedical Physiology & Kinesiology, Simon Fraser University, Metro Vancouver, BC, Canada
- Centre for Aging SMART, Vancouver Coastal Health Research Institute, Vancouver, BC, Canada
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Lang C, Schleichardt A, Warschun F, Walter N, Fleckenstein D, Berkel F, Ueberschär O. Relationship between Longitudinal Upper Body Rotation and Energy Cost of Running in Junior Elite Long-Distance Runners. Sports (Basel) 2023; 11:204. [PMID: 37888531 PMCID: PMC10611096 DOI: 10.3390/sports11100204] [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: 09/04/2023] [Revised: 09/29/2023] [Accepted: 10/06/2023] [Indexed: 10/28/2023] Open
Abstract
Running is a basic form of human locomotion and one of the most popular sports worldwide. While the leg biomechanics of running have been studied extensively, few studies have focused on upper-body movement. However, an effective arm swing and longitudinal rotation of the shoulders play an important role in running efficiency as they must compensate for the longitudinal torques generated by the legs. The aim of this study is to assess the upper-body rotation using wearable inertial sensors and to elucidate its relation to energy expenditure. Eighty-six junior elite middle- and long-distance runners (37 female, 49 male) performed an incremental treadmill test with sensors attached on both shoulders, tibiae and the sacrum. The mean and total horizontal shoulder and pelvis rotations per stride were derived while energy costs were determined using respiratory gas analysis and blood sampling. Results show that shoulder and pelvis rotations increase with running speed. While shoulder rotation is more pronounced in female than in male runners, there is no sex difference for pelvis rotation. The energy cost of running and upper trunk rotation prove to be slightly negatively correlated. In conclusion, upper body rotation appears to be an individual characteristic influenced by a sex-specific body mass distribution.
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Affiliation(s)
- Charlotte Lang
- Institute for Biomechanics, ETH Zürich, 8092 Zurich, Switzerland;
| | - Axel Schleichardt
- Institute for Applied Training Science, 04229 Leipzig, Germany; (A.S.); (F.W.); (N.W.); (D.F.); (F.B.)
| | - Frank Warschun
- Institute for Applied Training Science, 04229 Leipzig, Germany; (A.S.); (F.W.); (N.W.); (D.F.); (F.B.)
| | - Nico Walter
- Institute for Applied Training Science, 04229 Leipzig, Germany; (A.S.); (F.W.); (N.W.); (D.F.); (F.B.)
| | - Daniel Fleckenstein
- Institute for Applied Training Science, 04229 Leipzig, Germany; (A.S.); (F.W.); (N.W.); (D.F.); (F.B.)
| | - Fides Berkel
- Institute for Applied Training Science, 04229 Leipzig, Germany; (A.S.); (F.W.); (N.W.); (D.F.); (F.B.)
| | - Olaf Ueberschär
- Institute for Applied Training Science, 04229 Leipzig, Germany; (A.S.); (F.W.); (N.W.); (D.F.); (F.B.)
- Department of Engineering and Industrial Design, Magdeburg Stendal University of Applied Sciences, 39114 Magdeburg, Germany
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Yu L, Jiang H, Mei Q, Mohamad NI, Fernandez J, Gu Y. Intelligent prediction of lower extremity loadings during badminton lunge footwork in a lab-simulated court. Front Bioeng Biotechnol 2023; 11:1229574. [PMID: 37614628 PMCID: PMC10442659 DOI: 10.3389/fbioe.2023.1229574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 07/25/2023] [Indexed: 08/25/2023] Open
Abstract
Introduction: Playing badminton has been reported with extensive health benefits, while main injuries were documented in the lower extremity. This study was aimed to investigate and predict the knee- and ankle-joint loadings of athletes who play badminton, with "gold standard" facilities. The axial impact acceleration from wearables would be used to predict joint moments and contact forces during sub-maximal and maximal lunge footwork. Methods: A total of 25 badminton athletes participated in this study, following a previously established protocol of motion capture and musculoskeletal modelling techniques with the integration of a wearable inertial magnetic unit (IMU). We developed a principal component analysis (PCA) statistical model to extract features in the loading parameters and a multivariate partial least square regression (PLSR) machine learning model to correlate easily collected variables, such as the stance time, approaching velocity, and peak accelerations, with knee and ankle loading parameters (moments and contact forces). Results: The key variances of joint loadings were observed from statistical principal component analysis modelling. The promising accuracy of the partial least square regression model using input parameters was observed with a prediction accuracy of 94.52%, while further sensitivity analysis found a single variable from the ankle inertial magnetic unit that could predict an acceptable range (93%) of patterns and magnitudes of the knee and ankle loadings. Conclusion: The attachment of this single inertial magnetic unit sensor could be used to record and predict loading accumulation and distribution, and placement would exhibit less influence on the motions of the lower extremity. The intelligent prediction of loading patterns and accumulation could be integrated to design training and competition schemes in badminton or other court sports in a scientific manner, thus preventing fatigue, reducing loading-accumulation-related injury, and maximizing athletic performance.
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Affiliation(s)
- Lin Yu
- Faculty of Sports Science, Ningbo University, Ningbo, China
- Research Academy of Grand Health, Ningbo University, Ningbo, China
| | - Hanhui Jiang
- Faculty of Sports Science, Ningbo University, Ningbo, China
- Research Academy of Grand Health, Ningbo University, Ningbo, China
| | - Qichang Mei
- Faculty of Sports Science, Ningbo University, Ningbo, China
- Research Academy of Grand Health, Ningbo University, Ningbo, China
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
| | - Nur Ikhwan Mohamad
- Faculty of Sports Sciences and Coaching, Sultan Idris Education University, Tanjong Malim, Malaysia
| | - Justin Fernandez
- Faculty of Sports Science, Ningbo University, Ningbo, China
- Research Academy of Grand Health, Ningbo University, Ningbo, China
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
- Department of Engineering Science, The University of Auckland, Auckland, New Zealand
| | - Yaodong Gu
- Faculty of Sports Science, Ningbo University, Ningbo, China
- Research Academy of Grand Health, Ningbo University, Ningbo, China
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
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Verdel N, Hjort K, Sperlich B, Holmberg HC, Supej M. Use of smart patches by athletes: A concise SWOT analysis. Front Physiol 2023; 14:1055173. [PMID: 37035682 PMCID: PMC10073734 DOI: 10.3389/fphys.2023.1055173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 03/13/2023] [Indexed: 04/11/2023] Open
Affiliation(s)
- Nina Verdel
- Swedish Winter Sports Research Centre, Mid Sweden University, Sundsvall, Sweden
- Faculty of Sport, University of Ljubljana, Ljubljana, Slovenia
- *Correspondence: Nina Verdel,
| | - Klas Hjort
- Department of Materials Science and Engineering, Uppsala University, Uppsala, Sweden
| | - Billy Sperlich
- Integrative and Experimental Exercise Science and Training, Institute of Sport Science, University of Würzburg, Würzburg, Germany
| | - Hans-Christer Holmberg
- Department of Health Sciences, Luleå University of Technology, Luleå, Sweden
- Department of Physiology and Pharmacology, Biomedicum C5, Karolinska Institutet, Stockholm, Sweden
| | - Matej Supej
- Swedish Winter Sports Research Centre, Mid Sweden University, Sundsvall, Sweden
- Faculty of Sport, University of Ljubljana, Ljubljana, Slovenia
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Jones HSR, Stiles VH, Verheul J, Moore IS. Angular Velocities and Linear Accelerations Derived from Inertial Measurement Units Can Be Used as Proxy Measures of Knee Variables Associated with ACL Injury. SENSORS (BASEL, SWITZERLAND) 2022; 22:9286. [PMID: 36502001 PMCID: PMC9740759 DOI: 10.3390/s22239286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 11/25/2022] [Accepted: 11/26/2022] [Indexed: 06/17/2023]
Abstract
Given the high rates of both primary and secondary anterior cruciate ligament (ACL) injuries in multidirectional field sports, there is a need to develop easily accessible methods for practitioners to monitor ACL injury risk. Field-based methods to assess knee variables associated with ACL injury are of particular interest to practitioners for monitoring injury risk in applied sports settings. Knee variables or proxy measures derived from wearable inertial measurement units (IMUs) may thus provide a powerful tool for efficient injury risk management. Therefore, the aim of this study was to identify whether there were correlations between laboratory-derived knee variables (knee range of motion (RoM), change in knee moment, and knee stiffness) and metrics derived from IMUs (angular velocities and accelerations) placed on the tibia and thigh, across a range of movements performed in practitioner assessments used to monitor ACL injury risk. Ground reaction forces, three-dimensional kinematics, and triaxial IMU data were recorded from nineteen healthy male participants performing bilateral and unilateral drop jumps, and a 90° cutting task. Spearman's correlations were used to examine the correlations between knee variables and IMU-derived metrics. A significant strong positive correlation was observed between knee RoM and the area under the tibia angular velocity curve in all movements. Significant strong correlations were also observed in the unilateral drop jump between knee RoM, change in knee moment, and knee stiffness, and the area under the tibia acceleration curve (rs = 0.776, rs = -0.712, and rs = -0.765, respectively). A significant moderate correlation was observed between both knee RoM and knee stiffness, and the area under the thigh angular velocity curve (rs = 0.682 and rs = -0.641, respectively). The findings from this study suggest that it may be feasible to use IMU-derived angular velocities and acceleration measurements as proxy measures of knee variables in movements included in practitioner assessments used to monitor ACL injury risk.
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Affiliation(s)
- Holly S. R. Jones
- Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cyncoed Campus, Cardiff CF23 6XD, UK
| | - Victoria H. Stiles
- Sport and Health Sciences, University of Exeter, St Luke’s Campus, Exeter EX1 2LU, UK
| | - Jasper Verheul
- Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cyncoed Campus, Cardiff CF23 6XD, UK
| | - Isabel S. Moore
- Cardiff School of Sport and Health Sciences, Cardiff Metropolitan University, Cyncoed Campus, Cardiff CF23 6XD, UK
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Dataset of lower extremity joint angles, moments and forces in distance running. Heliyon 2022; 8:e11517. [DOI: 10.1016/j.heliyon.2022.e11517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 10/17/2022] [Accepted: 11/02/2022] [Indexed: 11/16/2022] Open
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Young F, Mason R, Wall C, Morris R, Stuart S, Godfrey A. Examination of a foot mounted IMU-based methodology for a running gait assessment. Front Sports Act Living 2022; 4:956889. [PMID: 36147582 PMCID: PMC9485551 DOI: 10.3389/fspor.2022.956889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 08/10/2022] [Indexed: 11/13/2022] Open
Abstract
Gait assessment is essential to understand injury prevention mechanisms during running, where high-impact forces can lead to a range of injuries in the lower extremities. Information regarding the running style to increase efficiency and/or selection of the correct running equipment, such as shoe type, can minimize the risk of injury, e.g., matching a runner's gait to a particular set of cushioning technologies found in modern shoes (neutral/support cushioning). Awareness of training or selection of the correct equipment requires an understanding of a runner's biomechanics, such as determining foot orientation when it strikes the ground. Previous work involved a low-cost approach with a foot-mounted inertial measurement unit (IMU) and an associated zero-crossing-based methodology to objectively understand a runner's biomechanics (in any setting) to learn about shoe selection. Here, an investigation of the previously presented ZC-based methodology is presented only to determine general validity for running gait assessment in a range of running abilities from novice (8 km/h) to experienced (16 km/h+). In comparison to Vicon 3D motion tracking data, the presented approach can extract pronation, foot strike location, and ground contact time with good [ICC(2,1) > 0.750] to excellent [ICC(2,1) > 0.900] agreement between 8-12 km/h runs. However, at higher speeds (14 km/h+), the ZC-based approach begins to deteriorate in performance, suggesting that other features and approaches may be more suitable for faster running and sprinting tasks.
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Affiliation(s)
- Fraser Young
- Department of Computer and Information Sciences, Northumbria University, Newcastle upon Tyne, United Kingdom
| | - Rachel Mason
- Department of Sport, Exercise and Rehabilitation, Northumbria University, Newcastle upon Tyne, United Kingdom
| | - Conor Wall
- Department of Computer and Information Sciences, Northumbria University, Newcastle upon Tyne, United Kingdom
| | - Rosie Morris
- Department of Sport, Exercise and Rehabilitation, Northumbria University, Newcastle upon Tyne, United Kingdom
| | - Samuel Stuart
- Department of Sport, Exercise and Rehabilitation, Northumbria University, Newcastle upon Tyne, United Kingdom
| | - Alan Godfrey
- Department of Computer and Information Sciences, Northumbria University, Newcastle upon Tyne, United Kingdom
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A Data Analytics Approach to Assess the Functional and Physical Performance of Female Soccer Players: A Cohort Design. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19158941. [PMID: 35897308 PMCID: PMC9330724 DOI: 10.3390/ijerph19158941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/19/2022] [Accepted: 07/21/2022] [Indexed: 12/10/2022]
Abstract
Background and Objectives: The aim of this study was twofold: (i) to observe the individual results of fitness status [countermovement jump (CMJ)], hop test, linear sprinting time, stride frequency, stride distance, force–power–velocity, peak power maximal and maximal speed, and repeated sprint ability (RSA) and functional performance (overhead squat, single-leg squat test, dumbbell hip-hinge, Thomas test, hip extension, and internal and external hip rotators) and (ii) to analyze the relationship between anthropometrical measures and values of fitness status with % of difference in the Thomas test, hip extension, and internal and external hip rotators. Materials and Methods: The study followed a cohort design. Sixteen female soccer players competing in the second division of the Spanish league were monitored during the first days of the pre-season. These players were evaluated three times during the preseason of the cohort period. The dataset showed a negative moderate correlation between time and percentage of difference in hip angle and another positive moderate correlation between maximal sprint and percentage of difference in hip angle (r = −0.54, p = 0.02 and r = 0.53, p = 0.04), respectively. The correlations of stride time and distance with hip extension are interesting, as professional soccer players should have higher levels of hip flexor flexibility during the stride phase, recoil of the instep kick action.
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Preatoni E, Bergamini E, Fantozzi S, Giraud LI, Orejel Bustos AS, Vannozzi G, Camomilla V. The Use of Wearable Sensors for Preventing, Assessing, and Informing Recovery from Sport-Related Musculoskeletal Injuries: A Systematic Scoping Review. SENSORS (BASEL, SWITZERLAND) 2022; 22:3225. [PMID: 35590914 PMCID: PMC9105988 DOI: 10.3390/s22093225] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/13/2022] [Accepted: 04/18/2022] [Indexed: 02/06/2023]
Abstract
Wearable technologies are often indicated as tools that can enable the in-field collection of quantitative biomechanical data, unobtrusively, for extended periods of time, and with few spatial limitations. Despite many claims about their potential for impact in the area of injury prevention and management, there seems to be little attention to grounding this potential in biomechanical research linking quantities from wearables to musculoskeletal injuries, and to assessing the readiness of these biomechanical approaches for being implemented in real practice. We performed a systematic scoping review to characterise and critically analyse the state of the art of research using wearable technologies to study musculoskeletal injuries in sport from a biomechanical perspective. A total of 4952 articles were retrieved from the Web of Science, Scopus, and PubMed databases; 165 were included. Multiple study features-such as research design, scope, experimental settings, and applied context-were summarised and assessed. We also proposed an injury-research readiness classification tool to gauge the maturity of biomechanical approaches using wearables. Five main conclusions emerged from this review, which we used as a springboard to propose guidelines and good practices for future research and dissemination in the field.
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Affiliation(s)
- Ezio Preatoni
- Department for Health, University of Bath, Bath BA2 7AY, UK; (E.P.); (L.I.G.)
- Centre for Health and Injury and Illness Prevention in Sport, University of Bath, Bath BA2 7AY, UK
| | - Elena Bergamini
- Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, Piazza L. de Bosis 6, 00135 Rome, Italy; (E.B.); (A.S.O.B.); (V.C.)
- Interuniversity Centre of Bioengineering of the Human Neuromusculoskeletal System (BOHNES), University of Rome “Foro Italico”, Piazza L. de Bosis 6, 00135 Rome, Italy
| | - Silvia Fantozzi
- Department of Electrical, Electronic, and Information Engineering “Guglielmo Marconi”, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy;
- Health Sciences and Technologies—Interdepartmental Centre for Industrial Research, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy
| | - Lucie I. Giraud
- Department for Health, University of Bath, Bath BA2 7AY, UK; (E.P.); (L.I.G.)
| | - Amaranta S. Orejel Bustos
- Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, Piazza L. de Bosis 6, 00135 Rome, Italy; (E.B.); (A.S.O.B.); (V.C.)
- Interuniversity Centre of Bioengineering of the Human Neuromusculoskeletal System (BOHNES), University of Rome “Foro Italico”, Piazza L. de Bosis 6, 00135 Rome, Italy
| | - Giuseppe Vannozzi
- Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, Piazza L. de Bosis 6, 00135 Rome, Italy; (E.B.); (A.S.O.B.); (V.C.)
- Interuniversity Centre of Bioengineering of the Human Neuromusculoskeletal System (BOHNES), University of Rome “Foro Italico”, Piazza L. de Bosis 6, 00135 Rome, Italy
| | - Valentina Camomilla
- Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, Piazza L. de Bosis 6, 00135 Rome, Italy; (E.B.); (A.S.O.B.); (V.C.)
- Interuniversity Centre of Bioengineering of the Human Neuromusculoskeletal System (BOHNES), University of Rome “Foro Italico”, Piazza L. de Bosis 6, 00135 Rome, Italy
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Benson LC, Räisänen AM, Clermont CA, Ferber R. Is This the Real Life, or Is This Just Laboratory? A Scoping Review of IMU-Based Running Gait Analysis. SENSORS 2022; 22:s22051722. [PMID: 35270869 PMCID: PMC8915128 DOI: 10.3390/s22051722] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 02/16/2022] [Accepted: 02/17/2022] [Indexed: 01/19/2023]
Abstract
Inertial measurement units (IMUs) can be used to monitor running biomechanics in real-world settings, but IMUs are often used within a laboratory. The purpose of this scoping review was to describe how IMUs are used to record running biomechanics in both laboratory and real-world conditions. We included peer-reviewed journal articles that used IMUs to assess gait quality during running. We extracted data on running conditions (indoor/outdoor, surface, speed, and distance), device type and location, metrics, participants, and purpose and study design. A total of 231 studies were included. Most (72%) studies were conducted indoors; and in 67% of all studies, the analyzed distance was only one step or stride or <200 m. The most common device type and location combination was a triaxial accelerometer on the shank (18% of device and location combinations). The most common analyzed metric was vertical/axial magnitude, which was reported in 64% of all studies. Most studies (56%) included recreational runners. For the past 20 years, studies using IMUs to record running biomechanics have mainly been conducted indoors, on a treadmill, at prescribed speeds, and over small distances. We suggest that future studies should move out of the lab to less controlled and more real-world environments.
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Affiliation(s)
- Lauren C. Benson
- Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada; (A.M.R.); (C.A.C.); (R.F.)
- Tonal Strength Institute, Tonal, San Francisco, CA 94107, USA
- Correspondence:
| | - Anu M. Räisänen
- Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada; (A.M.R.); (C.A.C.); (R.F.)
- Department of Physical Therapy Education, College of Health Sciences—Northwest, Western University of Health Sciences, Lebanon, OR 97355, USA
| | - Christian A. Clermont
- Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada; (A.M.R.); (C.A.C.); (R.F.)
- Sport Product Testing, Canadian Sport Institute Calgary, Calgary, AB T3B 6B7, Canada
| | - Reed Ferber
- Faculty of Kinesiology, University of Calgary, Calgary, AB T2N 1N4, Canada; (A.M.R.); (C.A.C.); (R.F.)
- Cumming School of Medicine, Faculty of Nursing, University of Calgary, Calgary, AB T2N 1N4, Canada
- Running Injury Clinic, Calgary, AB T2N 1N4, Canada
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Abstract
The different characteristics of the four swimming strokes affect the interplay between the four limbs, acting as a constraint to the force produced by each hand and foot. The purpose of this study was to analyze the symmetry of force production with a varying number of limbs in action and see its effect on velocity. Fifteen male swimmers performed four all-out bouts of 25-m swims in the four strokes in full-body stroke and segmental actions. A differential pressure system was used to measure the hands/feet propulsive force and a mechanical velocity meter was used to measure swimming velocity. Symmetry index was calculated based on the force values. All strokes and conditions presented contralateral limb asymmetries (ranging from 6.73% to 28% for the peak force and from 9.3% to 35.7% for the mean force). Backstroke was the most asymmetric stroke, followed-up by butterfly, front crawl, and breaststroke. Kicking conditions elicited the higher asymmetries compared with arm-pull conditions. No significant associations were found between asymmetries and velocity. The absence of such association suggests that, to a certain and unknown extent, swimming may benefit from contralateral limb asymmetry.
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Diraneyya MM, Ryu J, Abdel-Rahman E, Haas CT. Inertial Motion Capture-Based Whole-Body Inverse Dynamics. SENSORS 2021; 21:s21217353. [PMID: 34770660 PMCID: PMC8587542 DOI: 10.3390/s21217353] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/30/2021] [Accepted: 11/02/2021] [Indexed: 11/22/2022]
Abstract
Inertial Motion Capture (IMC) systems enable in situ studies of human motion free of the severe constraints imposed by Optical Motion Capture systems. Inverse dynamics can use those motions to estimate forces and moments developing within muscles and joints. We developed an inverse dynamic whole-body model that eliminates the usage of force plates (FPs) and uses motion patterns captured by an IMC system to predict the net forces and moments in 14 major joints. We validated the model by comparing its estimates of Ground Reaction Forces (GRFs) to the ground truth obtained from FPs and comparing predictions of the static model’s net joint moments to those predicted by 3D Static Strength Prediction Program (3DSSPP). The relative root-mean-square error (rRMSE) in the predicted GRF was 6% and the intraclass correlation of the peak values was 0.95, where both values were averaged over the subject population. The rRMSE of the differences between our model’s and 3DSSPP predictions of net L5/S1 and right and left shoulder joints moments were 9.5%, 3.3%, and 5.2%, respectively. We also compared the static and dynamic versions of the model and found that failing to account for body motions can underestimate net joint moments by 90% to 560% of the static estimates.
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Affiliation(s)
- Mohsen M. Diraneyya
- Institute for Aerospace Studies, University of Toronto, 4925 Dufferin Street, North York, Toronto, ON M3H 5T6, Canada;
| | - JuHyeong Ryu
- Department of Civil and Environmental Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada;
- Correspondence: (J.R.); (E.A.-R.)
| | - Eihab Abdel-Rahman
- Department of System Design Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada
- Correspondence: (J.R.); (E.A.-R.)
| | - Carl T. Haas
- Department of Civil and Environmental Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada;
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Li F, Li Z, Borović I, Rupčić T, Knjaz D. Does fatigue affect the kinematics of shooting in female basketball? INT J PERF ANAL SPOR 2021. [DOI: 10.1080/24748668.2021.1945878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Feng Li
- Laboratory for Sports Games, Faculty of Kinesiology, University of Zagreb, Zagreb, Croatia
| | - Zheng Li
- China Basketball College, Beijing Sport University, Beijing, China
| | - Iva Borović
- Women’s Basketball Club Medveščak, Croatian National Basketball Federation, Zagreb, Croatia
| | - Tomislav Rupčić
- Laboratory for Sports Games, Faculty of Kinesiology, University of Zagreb, Zagreb, Croatia
| | - Damir Knjaz
- Laboratory for Sports Games, Faculty of Kinesiology, University of Zagreb, Zagreb, Croatia
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15
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Napier C, BSc MR, Menon C, Paquette MR. Session Rating of Perceived Exertion Combined With Training Volume for Estimating Training Responses in Runners. J Athl Train 2021; 55:1285-1291. [PMID: 33064812 DOI: 10.4085/1062-6050-573-19] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
CONTEXT Historically, methods of monitoring training loads in runners have used simple and convenient metrics, including the duration or distance run. Changes in these values are assessed on a week-to-week basis to induce training adaptations and manage injury risk. To date, whether different measures of external loads, including biomechanical measures, provide better information regarding week-to-week changes in external loads experienced by a runner is unclear. In addition, the importance of combining internal-load measures, such as session rating of perceived exertion (sRPE), with different external-load measures to monitor week-to-week changes in training load in runners is unknown. OBJECTIVE To compare week-to-week changes in the training loads of recreational runners using different quantification methods. DESIGN Case series. SETTING Community based. PATIENTS OR OTHER PARTICIPANTS Recreational runners in Vancouver, British Columbia. MAIN OUTCOME MEASURE(S) Week-to-week changes in running time, steps, and cumulative shock, in addition to the product of each of these variables and the corresponding sRPE scores for each run. RESULTS Sixty-eight participants were included in the final analysis. Differences were present in week-to-week changes for running time compared with timeRPE (d = 0.24), stepsRPE (d = 0.24), and shockRPE (d = 0.31). The differences between week-to-week changes in running time and cumulative shock were also significant at the overall group level (d = 0.10). CONCLUSIONS We found that the use of an internal training-load measure (sRPE) in combination with external load (training duration) provided a more individualized estimate of week-to-week changes in overall training stress. A better estimation of training stress has significant implications for monitoring training adaptations, resulting performance, and possibly injury risk reduction. We therefore recommend the regular use of sRPE and training duration to monitor training load in runners. The use of cumulative shock as a measure of external load in some runners may also be more valid than duration alone.
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Affiliation(s)
- Christopher Napier
- Menrva Research Group, Schools of Mechatronic Systems Engineering and Engineering Science, Faculty of Applied Science, Simon Fraser University, Metro Vancouver, BC, Canada.,Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | | | - Carlo Menon
- Menrva Research Group, Schools of Mechatronic Systems Engineering and Engineering Science, Faculty of Applied Science, Simon Fraser University, Metro Vancouver, BC, Canada
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16
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Clemente FM, Akyildiz Z, Pino-Ortega J, Rico-González M. Validity and Reliability of the Inertial Measurement Unit for Barbell Velocity Assessments: A Systematic Review. SENSORS 2021; 21:s21072511. [PMID: 33916801 PMCID: PMC8038306 DOI: 10.3390/s21072511] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 03/29/2021] [Accepted: 04/01/2021] [Indexed: 12/14/2022]
Abstract
The use of inertial measurement unit (IMU) has become popular in sports assessment. In the case of velocity-based training (VBT), there is a need to measure barbell velocity in each repetition. The use of IMUs may make the monitoring process easier; however, its validity and reliability should be established. Thus, this systematic review aimed to (1) identify and summarize studies that have examined the validity of wearable wireless IMUs for measuring barbell velocity and (2) identify and summarize studies that have examined the reliability of IMUs for measuring barbell velocity. A systematic review of Cochrane Library, EBSCO, PubMed, Scielo, Scopus, SPORTDiscus, and Web of Science databases was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. From the 161 studies initially identified, 22 were fully reviewed, and their outcome measures were extracted and analyzed. Among the eight different IMU models, seven can be considered valid and reliable for measuring barbell velocity. The great majority of IMUs used for measuring barbell velocity in linear trajectories are valid and reliable, and thus can be used by coaches for external load monitoring.
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Affiliation(s)
- Filipe Manuel Clemente
- Instituto Politécnico de Viana do Castelo, Escola Superior Desporto e Lazer, Rua Escola Industrial e Comercial de Nun’Álvares, 4900-347 Viana do Castelo, Portugal
- Instituto de Telecomunicações, Delegação da Covilhã, 1049-001 Lisboa, Portugal
- Correspondence:
| | - Zeki Akyildiz
- Sports Science Department, Gazi University, Teknikokullar, Ankara 06500, Turkey;
| | - José Pino-Ortega
- Faculty of Sports Sciences, University of Murcia, San Javier, 30100 Murcia, Spain;
- BIOVETMED & SPORTSCI Research Group, Department of Physical Activity and Sport, Faculty of Sport Sciences, University of Murcia, San Javier, 30100 Murcia, Spain;
| | - Markel Rico-González
- BIOVETMED & SPORTSCI Research Group, Department of Physical Activity and Sport, Faculty of Sport Sciences, University of Murcia, San Javier, 30100 Murcia, Spain;
- Department of Physical Education and Sport, University of the Basque Country, UPV-EHU, Lasarte 71, 01007 Vitoria-Gasteiz, Spain
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17
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Relationship Between Training Factors and Injuries in Stand-Up Paddleboarding Athletes. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18030880. [PMID: 33498553 PMCID: PMC7908629 DOI: 10.3390/ijerph18030880] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 01/13/2021] [Accepted: 01/18/2021] [Indexed: 01/10/2023]
Abstract
Stand-up paddleboarding (SUP) is an increasingly popular sport but, as in other sports, there is an injury ratio associated with practicing it. In other types of sport, some factors have been linked to the likelihood of suffering an injury, among which stretching, core training and resistance training may be considered the most significant. Therefore, the main aim of this study was to identify the training factors that could influence injuries suffered by participants in international SUP competitions. Ninety-seven questionnaires were collected from paddlers who participated in an international SUP circuit, with epidemiological data being gathered about injuries and different questions related to the training undertaken. A multi-factor ANOVA test was used to identify the factors which influence the state of injury. Results showed that almost 60% of injuries occurred in the arms or in the upper thoracic region, around 65% of which were in tendons or muscles and, in almost half of cases, were related to overuse. Likewise, the results showed that athletes with injury performed fewer resistance training sessions per week (p = 0.028), over fewer months per year (p = 0.001), more weekly training sessions (p = 0.004) and, lastly, a greater volume of weekly training (p = 0.003) than athletes without injury. Moreover, the most important training factors that reduce the likelihood of suffering an injury were taken into account-in. particular, resistance training alone (p = 0.011) or together with CORE training (p = 0.006) or stretching (p = 0.012), and the dominant side of paddling (p = 0.032). In conclusion, resistance training would seem to reduce the likelihood of injury among SUP practitioners, and such benefits could be obtained by resistance training alone or in combination with CORE training or stretching.
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18
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Li F, Knjaz D, Rupčić T. Influence of Fatigue on Some Kinematic Parameters of Basketball Passing. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18020700. [PMID: 33467488 PMCID: PMC7830610 DOI: 10.3390/ijerph18020700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 01/12/2021] [Accepted: 01/14/2021] [Indexed: 11/17/2022]
Abstract
Kinematic analysis is an objective method for examining basketball technique. However, there are just a few studies featuring a kinematic analysis of passing. The purpose of this study was to determine whether the kinematic parameters and accuracy of passing changed when players were under the influence of fatigue. Eleven Croatian basketball players who are members of the youth national program (age: 18.36 ± 0.67 years; height: 192.32 ± 9.98 cm; weight: 83.35 ± 11.19 kg; body fat: 15.00 ± 4.40%, arm span: 194.34 ± 10.39 cm) participated in fatigue and non-fatigue repetitive tests. A Xsens suit was used to analyze the kinematic parameters of push passing; a radar gun was used to determine ball speed; heart rate and blood lactate were used to identify fatigue and non-fatigue state. There was a significant difference in angular velocities of shoulder (p = 0.01), elbow (p = 0.04), and wrist (p = 0.01), accuracy (p = 0.01), ball speed (p = 0.00), pelvis position (p = 0.00), and velocity of the pelvis in X-axis (p = 0.00) between fatigue and non-fatigue state. Fatigue influences some kinematic parameters and accuracy of passing. The findings of this study suggest that coaches conduct as many drills as possible in situational conditions that are similar to the conditions during the basketball game itself.
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Raya-González J, Clemente FM, Castillo D. Analyzing the Magnitude of Interlimb Asymmetries in Young Female Soccer Players: A Preliminary Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:E475. [PMID: 33435559 PMCID: PMC7826579 DOI: 10.3390/ijerph18020475] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/05/2021] [Accepted: 01/06/2021] [Indexed: 02/05/2023]
Abstract
Although asymmetries in lower limbs have been linked with players' performance in male soccer players, literature that has been published addressing female soccer is scarce. Thus, the aim of this study was twofold: (i) describe the asymmetries of women soccer players during jumping, change-of-direction and range-of-motion tests; and (ii) test possible relationships between asymmetries and injury risk in female soccer players. Sixteen female players (15.5 ± 1.5 years) performed a battery of fitness tests (i.e., jump ability, change-of-direction ability and passive range-of-motion) and muscle mass analysis via dual-energy X-ray absorptiometry, through which the specific asymmetry index and the related injury risk were calculated. Significant (p < 0.05) lower asymmetries in the change-of-direction test were observed in comparison to those observed in jumping and range-of-motion tests; significant (p < 0.05) lower asymmetries in muscle mass were also reported compared to those found in the change-of-direction and countermovement jump tests. Additionally, increased injury risk for countermovement jump and hip flexion with extended knee range-of-motion (relating to asymmetry values) and for ankle flexion with flexed knee range-of-motion in both legs (relating to reference range-of-motion values), as well as increased individual injury risk values, were observed across all tests. These findings suggest the necessity to implement individual approaches for asymmetry and injury risk analyses.
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Affiliation(s)
- Javier Raya-González
- Faculty of Health Sciences, Universidad Isabel I, 09001 Burgos, Spain; (J.R.-G.); (D.C.)
| | - Filipe Manuel Clemente
- Sports Sciences Department, Instituto Politécnico de Viana do Castelo, Escola Superior de Desporto e Lazer, Melgaço, 4900-347 Viana do Castelo, Portugal
| | - Daniel Castillo
- Faculty of Health Sciences, Universidad Isabel I, 09001 Burgos, Spain; (J.R.-G.); (D.C.)
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20
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Kalata M, Maly T, Hank M, Michalek J, Bujnovsky D, Kunzmann E, Zahalka F. Unilateral and Bilateral Strength Asymmetry among Young Elite Athletes of Various Sports. ACTA ACUST UNITED AC 2020; 56:medicina56120683. [PMID: 33321777 PMCID: PMC7764419 DOI: 10.3390/medicina56120683] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 12/03/2020] [Accepted: 12/08/2020] [Indexed: 11/17/2022]
Abstract
Background and objective: Type of physical activity may influence morphological and muscular asymmetries in the young population. However, less is known about the size of this effect when comparing various sports. The aim of this study was to identify the degree of bilateral asymmetry (BA) and the level of unilateral ratio (UR) between isokinetic strength of knee extensors (KE) and flexors (KF) among athletes of three different types of predominant locomotion in various sports (symmetric, asymmetric and hybrid). Material and methods: The analyzed group consisted of young elite athletes (n = 50). The maximum peak muscle torque of the KE and KF in both the dominant (DL) and non-dominant (NL) lower limb during concentric muscle contraction at an angular velocity of 60°·s−1 was measured with an isokinetic dynamometer. Results: Data analysis showed a significant effect of the main factor (the type of sport) on the level of monitored variables (p = 0.004). The type of sport revealed a significant difference in the bilateral ratio (p = 0.01). The group of symmetric and hybrid sports achieved lower values (p = 0.01) of BA in their lower limb muscles than those who played asymmetric sports. The hybrid sports group achieved higher UR values (p = 0.01) in both lower limbs. Conclusions: The results indicate that sports with predominantly symmetrical, asymmetrical, and hybrid types of locomotion affected the size of the BA, as well as the UR between KE and KF in both legs in young athletes. We recommend paying attention to regular KE and KF strength diagnostics in young athletes and optimizing individual compensatory exercises if a higher ratio of strength asymmetry is discovered.
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Affiliation(s)
| | - Tomas Maly
- Correspondence: ; Tel.: +420-776-531-143
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21
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Effect of Grade and Surface Type on Peak Tibial Acceleration in Trained Distance Runners. J Appl Biomech 2020; 37:2-5. [PMID: 33022655 DOI: 10.1123/jab.2020-0096] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 07/15/2020] [Accepted: 08/05/2020] [Indexed: 11/18/2022]
Abstract
Runners experience repeated impact forces during training, and the culmination of these forces can contribute to overuse injuries. The purpose of this study was to compare peak vertical tibial acceleration (TA) in trained distance runners on 3 surface types (grass, asphalt, and concrete) and 3 grades (incline, decline, and level). During visit 1, subjects completed a 1-mile time trial to determine their pace for all running trials: 80% (5%) of the average time trial velocity. During visit 2, subjects were outfitted with a skin-mounted accelerometer and performed 18 separate running trials during which peak TA was assessed during the stance phase. Each subject ran 2 trials for each condition with 2 minutes of rest between trials. Peak TA was different between decline (8.04 [0.12] g) and incline running (7.31 [0.35] g; P = .020). On the level grade, peak TA was greater during grass (8.22 [1.22] g) compared with concrete (7.47 [1.65] g; P = .017). On the incline grade, grass (7.68 [1.44] g) resulted in higher peak TA than asphalt (6.99 [1.69] g; P = .030). These results suggest that under certain grade conditions grass may result in higher TA compared with either concrete or asphalt.
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Harper SE, Roembke RA, Zunker JD, Thelen DG, Adamczyk PG. Wearable Tendon Kinetics. SENSORS (BASEL, SWITZERLAND) 2020; 20:E4805. [PMID: 32858833 PMCID: PMC7506797 DOI: 10.3390/s20174805] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 08/21/2020] [Accepted: 08/22/2020] [Indexed: 12/12/2022]
Abstract
This study introduces a noninvasive wearable system for investigating tendon loading patterns during outdoor locomotion on variable terrain. The system leverages shear wave tensiometry, which is a new approach for assessing tendon load by tracking wave speed within the tissue. Our wearable tensiometry system uses a battery-operated piezoelectric actuator to induce micron-scale shear waves in a tendon. A data logger monitors wave propagation by recording from two miniature accelerometers mounted on the skin above the tendon. Wave speed is determined from the wave travel time between accelerometers. The wearable system was used to record Achilles tendon wave speed at 100 Hz during 1-km outdoor walking trials in nine young adults. Inertial measurement units (IMUs) simultaneously monitored participant position, walking speed, and ground incline. An analysis of 5108 walking strides revealed the coupled biomechanical effects of terrain slope and walking speed on tendon loading. Uphill slopes increased the tendon wave speed during push-off, whereas downhill slopes increased tendon wave speeds during early stance braking. Walking speed significantly modulated peak tendon wave speed on uphill slopes but had less influence on downhill slopes. Walking speed consistently induced greater early stance wave speeds for all slopes. These observations demonstrate that wearable shear wave tensiometry holds promise for evaluating tendon tissue kinetics in natural environments and uncontrolled movements. There are numerous practical applications of wearable tensiometry spanning orthopedics, athletics, rehabilitation, and ergonomics.
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Affiliation(s)
- Sara E. Harper
- Department of Biomedical Engineering, University of Wisconsin—Madison, Madison, WI 53706, USA; (S.E.H.); (D.G.T.)
| | - Rebecca A. Roembke
- Department of Mechanical Engineering, University of Wisconsin—Madison, Madison, WI 53706, USA; (R.A.R.); (J.D.Z.)
| | - John D. Zunker
- Department of Mechanical Engineering, University of Wisconsin—Madison, Madison, WI 53706, USA; (R.A.R.); (J.D.Z.)
| | - Darryl G. Thelen
- Department of Biomedical Engineering, University of Wisconsin—Madison, Madison, WI 53706, USA; (S.E.H.); (D.G.T.)
- Department of Mechanical Engineering, University of Wisconsin—Madison, Madison, WI 53706, USA; (R.A.R.); (J.D.Z.)
| | - Peter G. Adamczyk
- Department of Biomedical Engineering, University of Wisconsin—Madison, Madison, WI 53706, USA; (S.E.H.); (D.G.T.)
- Department of Mechanical Engineering, University of Wisconsin—Madison, Madison, WI 53706, USA; (R.A.R.); (J.D.Z.)
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