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Mesquita RNO, Latella C, Ruas CV, Nosaka K, Taylor JL. Contraction Velocity of the Elbow Flexors Assessed by Tensiomyography: A Comparison Between Formulas. J Strength Cond Res 2023; 37:1969-1977. [PMID: 36946988 DOI: 10.1519/jsc.0000000000004495] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 12/15/2022] [Indexed: 03/23/2023]
Abstract
ABSTRACT Mesquita, RNO, Latella, C, Ruas, CV, Nosaka, K, and Taylor, JL. Contraction velocity of the elbow flexors assessed by tensiomyography: A comparison between formulas. J Strength Cond Res 37(10): 1969-1977, 2023-Muscle contraction velocity ( Vc ) assessed by tensiomyography is a promising measure for athlete profiling. Multiple formulas are used to estimate Vc , but the most suitable method is yet to be established. Fifteen adults (2 female subjects) underwent tensiomyography assessment of biceps brachii muscle at 10, 45 and 90° of elbow flexion on 2 separate days. Vc was calculated using 6 formulas. Formulas 1 and 2 are measures of the early phase of the twitch; Formulas 3-5 are measures over a wider time-window, with Formula 5 normalizing Vc to maximal displacement ( D m); and we proposed Formula 6 as a measure of peak Vc . Test-retest reliability, the required minimum number of trials, proportional bias, and effects of joint angle were investigated. Higher reliability (coefficient of variation: 2.8-6.9%) was found for Formula 1 (0-2 mm of displacement) and Formula 5 (normalized 10-90% of D m). Overall, a minimum of 6-7 trials was required to obtain reliable estimates. For 10° only, significant positive proportional bias ( r = 0.563-0.670) was found for all formulas except Formula 5. Vc was faster ( p < 0.001) at shorter muscle lengths for all formulas except Formula 5 ( p = 0.06). Vc in the early phase of the twitch was more reliable when calculated using absolute displacement (Formula 1) than a relative threshold (Formula 2). Over a larger time-window, Formulas 3 and 4 were similarly reliable. Because they are derived from different components of the twitch and different parameters, the different formulas should not be used interchangeably. Additionally, more precise nomenclature is required to describe the information obtained from each formula.
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Affiliation(s)
- Ricardo N O Mesquita
- Department of Electrical Engineering, Chalmers University of Technology, Gothenburg, Sweden
- School of Medical and Health Sciences, Centre for Human Performance, Edith Cowan University, Perth, Australia
- Neuroscience Research Australia, Sydney, Australia; and
| | - Christopher Latella
- School of Medical and Health Sciences, Centre for Human Performance, Edith Cowan University, Perth, Australia
| | - Cassio V Ruas
- School of Medical and Health Sciences, Centre for Human Performance, Edith Cowan University, Perth, Australia
- Brazilian Institute of Neuroscience and Neurotechnology-Institute of Physics Gleb Wataghin, University of Campinas, São Paulo, Brazil
| | - Kazunori Nosaka
- School of Medical and Health Sciences, Centre for Human Performance, Edith Cowan University, Perth, Australia
| | - Janet L Taylor
- School of Medical and Health Sciences, Centre for Human Performance, Edith Cowan University, Perth, Australia
- Neuroscience Research Australia, Sydney, Australia; and
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Sensor location affects skeletal muscle contractility parameters measured by tensiomyography. PLoS One 2023; 18:e0281651. [PMID: 36758055 PMCID: PMC9910630 DOI: 10.1371/journal.pone.0281651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 01/30/2023] [Indexed: 02/10/2023] Open
Abstract
Tensiomyography (TMG) is a non-invasive method for measuring contractile properties of skeletal muscle that is increasingly being used in research and practice. However, the lack of standardization in measurement protocols mitigates the systematic use in sports medical settings. Therefore, this study aimed to investigate the effects of lower leg fixation and sensor location on TMG-derived parameters. Twenty-two male participants underwent TMG measurements on the m. biceps femoris (BF) in randomized order with and without lower leg fixation (fixed vs. non-fixed). Measurements were conducted at 50% of the muscle's length (BF-mid) and 10 cm distal to this (BF-distal). The sensor location affected the contractile properties significantly, both with and without fixation. Delay time (Td) was greater at BF-mid compared to BF-distal (fixed: 23.2 ± 3.2 ms vs. 21.2 ± 2.7 ms, p = 0.002; non-fixed: 24.03 ± 4.2 ms vs. 21.8 ± 2.7 ms, p = 0.008), as were maximum displacement (Dm) (fixed: 5.3 ± 2.7 mm vs. 3.5 ± 1.7 mm, p = 0.005; non-fixed: 5.4 ± 2.5 mm vs. 4.0 ± 2.0 mm, p = 0.03), and contraction velocity (Vc) (fixed: 76.7 ± 25.1 mm/s vs. 57.2 ± 24.3 mm/s, p = 0.02). No significant differences were revealed for lower leg fixation (all p > 0.05). In summary, sensor location affects the TMG-derived parameters on the BF. Our findings help researchers to create tailored measurement procedures in compliance with the individual goals of the TMG measurements and allow adequate interpretation of TMG parameters.
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Ikeda K, Yoshii Y, Kohyama S, Ikumi A, Ikeda R, Yamazaki M. Sex differences in wrist torque and endurance-Biomechanical factors associated with developing lateral epicondylitis of the humerus. J Orthop Res 2022. [PMID: 36573481 DOI: 10.1002/jor.25506] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 11/10/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022]
Abstract
Since eccentric contractions contribute to the development of tendinopathy, sex differences in wrist torque and endurance may be involved in the pathophysiology of lateral epicondylitis and its refractoriness. Therefore, the present study investigated sex differences in wrist torque and endurance. The wrist extension and flexion torques of the 100 wrists of 25 males and 25 females were measured. The following parameters were assessed: muscle strength at the starting- and end point for the measurement, Δ muscle strength, that is, the amount of a loss over time, and the muscle endurance ratio, that is, the decrease rate over time. Each parameter in males and females was statistically analyzed. In wrist extension, muscle strength at the starting point was 6.1 Nm for males and 3.3 Nm for females (p < 0.001); Δ Muscle strength was -0.052 Nm/s for males and -0.038 Nm/s for females (p = 0.036); The muscle endurance ratio was 99.1%/s for males and 98.8%/s for females (p = 0.015). In wrist flexion, muscle strength at the starting point and absolute value of Δ muscle strength were significantly larger in males than in females; No significant difference was observed in the muscle endurance ratio in wrist flexion between males and females. These results revealed sex differences in wrist torque and endurance. The muscle endurance ratio of the wrist extensors was lower in females than in males, which suggests that females need to exert more effort to maintain the wrist extension position under resistance. This may predispose the wrist extensor muscles in females to eccentric contractions.
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Affiliation(s)
- Kazuhiro Ikeda
- Department of Orthopedic Surgery, Kikkoman General Hospital, Noda, Chiba Prefecture, Japan.,Department of Orthopedic Surgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki Prefecture, Japan
| | - Yuichi Yoshii
- Department of Orthopedic Surgery, Tokyo Medical University Ibaraki Medical Center, Inashiki, Ibaraki Prefecture, Japan
| | - Sho Kohyama
- Department of Orthopedic Surgery, Kikkoman General Hospital, Noda, Chiba Prefecture, Japan
| | - Akira Ikumi
- Department of Orthopedic Surgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki Prefecture, Japan
| | - Reimi Ikeda
- Department of Orthopedic Surgery, Moriya Daiichi General Hospital, Moriya, Ibaraki Prefecture, Japan
| | - Masashi Yamazaki
- Department of Orthopedic Surgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki Prefecture, Japan
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Langen G, Sandau I, Ueberschär O, Nosaka K, Behringer M. Methodical approaches to determine the rate of radial muscle displacement using tensiomyography: A scoping review and new reporting guideline. J Electromyogr Kinesiol 2022; 67:102702. [PMID: 36183503 DOI: 10.1016/j.jelekin.2022.102702] [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: 02/07/2022] [Revised: 07/30/2022] [Accepted: 08/31/2022] [Indexed: 12/14/2022] Open
Abstract
Tensiomyography is a non-invasive method to assess skeletal muscle contractile properties from the stimulated radial displacement. Many studies have used the rate of displacement (Vc) as an indirect measure of muscle contraction velocity. However, no standardised methodical approach exists to measure displacement and determine Vc. This review aimed to provide an overview of concepts to determine Vc and measurement protocols to foster the development of a standardised methodical approach. This review followed the Preferred Reporting Items for Systematic Reviews and meta-Analyses extension for Scoping Reviews (PRISMA-ScR) guideline. Systematic searches were performed within five electronic databases and additional sources. The included 62 studies reported 10 different concepts to determine Vc, which we summarised in three groups. The determination concepts differed mainly regarding time intervals during the contraction phase considered and criteria used to define these intervals. Essential information on the equipment and raters, measurement setup, electrical stimulation procedure, and data analysis were frequently not reported. In conclusion, no consensus on how to determine Vc existed. Incomplete reporting of measurement protocols hindered study comparison, which obstructs developing a standardised approach. Therefore, we propose a new guideline for reporting measurement protocols, which covers the 1) equipment and rater, 2) measurement setup, including positioning of the subject, sensor and electrodes, 3) electrical stimulation, including initial stimulation amplitude, increment, and endpoint, and 4) data analysis, including selection criteria and number of analysed signals and a definition of derived parameters.
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Affiliation(s)
- G Langen
- Department of Sports Medicine and Performance Physiology, Goethe University Frankfurt, Frankfurt, Germany; Department of Strength Power and Technical Sports, Institute for Applied Training Science, Leipzig, Germany.
| | - I Sandau
- Department of Strength Power and Technical Sports, Institute for Applied Training Science, Leipzig, Germany
| | - O Ueberschär
- Department of Engineering and Industrial Design, Magdeburg-Stendal University of Applied Sciences, Magdeburg, Germany; Department of Biomechanics, Institute for Applied Training Science, Leipzig, Germany
| | - K Nosaka
- Centre for Human Performance, School of Medical and Health Sciences, Edith Cowan University, Joondalup, WA, Australia
| | - M Behringer
- Department of Sports Medicine and Performance Physiology, Goethe University Frankfurt, Frankfurt, Germany
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Macchi R, Santuz A, Hays A, Vercruyssen F, Arampatzis A, Bar-Hen A, Nicol C. Sex influence on muscle synergies in a ballistic force-velocity test during the delayed recovery phase after a graded endurance run. Heliyon 2022; 8:e09573. [PMID: 35756118 PMCID: PMC9213706 DOI: 10.1016/j.heliyon.2022.e09573] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/04/2022] [Accepted: 05/25/2022] [Indexed: 10/24/2022] Open
Abstract
The acute and delayed phases of the functional recovery pattern after running exercise have been studied mainly in men. However, it seems that women are less fatigable and/or recover faster than men, at least when tested in isometric condition. After a 20 km graded running race, the influence of sex on the delayed phase of recovery at 2-4 days was studied using a horizontal ballistic force-velocity test. Nine female and height male recreational runners performed maximal concentric push-offs at four load levels a week before the race (PRE), 2 and 4 days (D2 and D4) later. Ground reaction forces and surface electromyographic (EMG) activity from 8 major lower limb muscles were recorded. For each session, the mechanical force-velocity-power profile (i.e. theoretical maximal values of force ( F ¯ 0), velocity ( V ¯ 0), and power ( P ¯ max)) was computed. Mean EMG activity of each recorded muscle and muscle synergies (three for both men and women) were extracted. Independently of the testing sessions, men and women differed regarding the solicitation of the bi-articular thigh muscles (medial hamstring muscles and rectus femoris). At mid-push-off, female made use of more evenly distributed lower limb muscle activities than men. No fatigue effect was found for both sexes when looking at the mean ground reaction forces. However, the force-velocity profile varied by sex throughout the recovery: only men showed a decrease of both V ¯ 0 (p < 0.05) and P ¯ max (p < 0.01) at D2 compared to PRE. Vastus medialis activity was reduced for both men and women up to D4, but only male synergies were impacted at D2: the center of activity of the first and second synergies was reached later. This study suggests that women could recover earlier in a dynamic multi-joint task and that sex-specific organization of muscle synergies may have contributed to their different recovery times after such a race.
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Affiliation(s)
- Robin Macchi
- ISM, CNRS & Aix Marseille University, Marseille, France
| | - Alessandro Santuz
- Department of Training and Movement Sciences, Humboldt-Universität zu Berlin, 10115 Berlin, Germany.,Berlin School of Movement Science, Humboldt-Universität zu Berlin, 10115 Berlin, Germany
| | - Arnaud Hays
- ISM, CNRS & Aix Marseille University, Marseille, France
| | | | - Adamantios Arampatzis
- Department of Training and Movement Sciences, Humboldt-Universität zu Berlin, 10115 Berlin, Germany.,Berlin School of Movement Science, Humboldt-Universität zu Berlin, 10115 Berlin, Germany
| | - Avner Bar-Hen
- CEDRIC, Conservatoire National des Arts et Métiers, Paris, France
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González-Rosalén J, Medina-Mirapeix F, Cuerda-Del Pino A, Moreno-Segura N, Gacto-Sánchez M, Martín-San Agustín R. Analysis of Compliance with Time under Tension and Force during Strengthening Exercises with Elastic Bands. Diagnostics (Basel) 2021; 11:diagnostics11112016. [PMID: 34829363 PMCID: PMC8620485 DOI: 10.3390/diagnostics11112016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/27/2021] [Accepted: 10/28/2021] [Indexed: 11/16/2022] Open
Abstract
Quantifying training variables of a physical exercise modality is essential for an appropriate dosage. In training with elastic bands, time under tension (TUT) and force represent the duration and intensity of this force-training modality. The aims of this study were to evaluate the degree of compliance to TUT prescription for three different scenarios of two exercises and the comparison of the force values obtained versus the estimate values. A total of 29 healthy volunteers were evaluated in a clinical environment under controlled conditions in 3 different scenarios (different velocities or ROMs) of both shoulder abduction and knee extension in 2 sets of 10 repetitions per scenario within a single session. Concentric and isometric phases showed a higher degree of compliance for their TUTs than the eccentric phase TUTs for all scenarios of both exercises, whereas the degree of compliance was higher for the total TUT than for the phases’ TUTs. Additionally, the eccentric phase showed a general tendency to develop for longer time periods than prescribed, whilst the fast scenario showed a higher degree of compliance for isometric phase TUTs and total TUTs than the extant two scenarios in both exercises. On the other hand, the force of the elastic bands tends to be overestimated according to the estimates of the manufacturers. These findings, both those related to the degree of compliance with TUTs and the force analysis, can be used by physiotherapists and other exercise professionals as a reference to achieve a good dosage of routine exercises with elastic bands.
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Affiliation(s)
- Javier González-Rosalén
- Department of Physiotherapy, University of Valencia, CP 46010 Valencia, Spain; (J.G.-R.); (A.C.-D.P.); (N.M.-S.)
| | | | - Alba Cuerda-Del Pino
- Department of Physiotherapy, University of Valencia, CP 46010 Valencia, Spain; (J.G.-R.); (A.C.-D.P.); (N.M.-S.)
| | - Noemi Moreno-Segura
- Department of Physiotherapy, University of Valencia, CP 46010 Valencia, Spain; (J.G.-R.); (A.C.-D.P.); (N.M.-S.)
| | - Mariano Gacto-Sánchez
- Department of Physiotherapy, University of Murcia, CP 30100 Murcia, Spain; (F.M.-M.); (M.G.-S.)
| | - Rodrigo Martín-San Agustín
- Department of Physiotherapy, University of Valencia, CP 46010 Valencia, Spain; (J.G.-R.); (A.C.-D.P.); (N.M.-S.)
- Correspondence:
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Afonso J, Rocha-Rodrigues S, Clemente FM, Aquino M, Nikolaidis PT, Sarmento H, Fílter A, Olivares-Jabalera J, Ramirez-Campillo R. The Hamstrings: Anatomic and Physiologic Variations and Their Potential Relationships With Injury Risk. Front Physiol 2021; 12:694604. [PMID: 34305648 PMCID: PMC8294189 DOI: 10.3389/fphys.2021.694604] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 06/16/2021] [Indexed: 01/11/2023] Open
Abstract
The incidence and recurrence of hamstrings injuries are very high in sports, posing elevated performance and financial-related costs. Attempts to identify the risk factors involved in predicting vulnerability to hamstrings injury is important for designing exercise-based programs that aim to mitigate the rate and severity of hamstrings injuries and improve rehabilitation strategies. However, research has shown that non-modifiable risk factors may play a greater role than modifiable risk factors. Recognizing non-modifiable risk factors and understanding their implications will afford the prescription of better suited exercise programs, i.e., that are more respectful of the individual characteristics. In a nutshell, non-modifiable risk factors can still be acted upon, even if indirectly. In this context, an underexplored topic is how intra and inter- individual anatomic and physiologic variations in hamstrings (e.g., muscle bellies, fiber types, tendon length, aponeurosis width, attachment sites, sex- and age-related differences) concur to alter hamstrings injuries risk. Some anatomic and physiologic variations may be modifiable through exercise interventions (e.g., cross-sectional area), while others may not (e.g., supernumerary muscle bellies). This apparent dichotomy may hide a greater complexity, i.e., there may be risk factors that are partially modifiable. Therefore, we explored the available information on the anatomic variations of the hamstrings, providing a deeper insight into the individual risk factors for hamstrings injuries and contributing with better knowledge and potential applications toward a more individualized exercise prescription.
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Affiliation(s)
- José Afonso
- Centre for Research, Education, Innovation and Intervention in Sport, Faculty of Sport of the University of Porto, Porto, Portugal
| | - Sílvia Rocha-Rodrigues
- Escola Superior de Desporto e Lazer, Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal
- Research Centre in Sports Sciences, Health Sciences and Human Development, Vila Real, Portugal
- Tumor & Microenvironment Interactions Group, Instituto de Investigação e Inovação em Saúde, Porto, Portugal
| | - Filipe M. Clemente
- Escola Superior de Desporto e Lazer, Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal
- Instituto de Telecomunicações, Delegação da Covilhã, Covilhã, Portugal
| | - Michele Aquino
- Department of Health and Sport Sciences, Adelphi University, New York, NY, United States
| | | | - Hugo Sarmento
- Research Unit for Sport and Physical Activity, Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, Portugal
| | - Alberto Fílter
- FSI Sport Research Lab, Football Science Institute, Granada, Spain
- Research Group Physical Activity, Health and Sport CTS-948, University of Pablo de Olavide, Seville, Spain
| | - Jesús Olivares-Jabalera
- FSI Sport Research Lab, Football Science Institute, Granada, Spain
- Sport and Health University Research Institute, Department of Physical and Sports Education, University of Granada, Granada, Spain
| | - Rodrigo Ramirez-Campillo
- Department of Physical Activity Sciences, Universidad de Los Lagos, Santiago, Chile
- Centro de Investigación en Fisiología del Ejercicio, Facultad de Ciencias, Universidad Mayor, Santiago, Chile
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Herring CH, Goldstein ER, Fukuda DH. Use of Tensiomyography in Evaluating Sex-Based Differences in Resistance-Trained Individuals After Plyometric and Isometric Midthigh Pull Postactivation Potentiation Protocols. J Strength Cond Res 2021; 35:1527-1534. [PMID: 34027919 DOI: 10.1519/jsc.0000000000004033] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
ABSTRACT Herring, CH, Goldstein, ER, and Fukuda, DH. Use of tensiomyography in evaluating sex-based differences in resistance-trained individuals after plyometric and isometric midthigh pull postactivation potentiation protocols. J Strength Cond Res 35(6): 1527-1534, 2021-The purposes of this study were to determine if there are sex-based differences in muscular contractile properties as measured by tensiomyography (TMG) and to determine if plyometrics or the isometric midthigh pull are effective methods of eliciting postactivation potentiation (PAP). Thirty strong, resistance-trained men (n = 15) and women (n = 15) underwent 3 testing days consisting of a PAP or control protocol, and pre-TMG and post-TMG and performance testing. Contractile properties from TMG were assessed in the gastrocnemius medial head (GMH), gluteus maximus (GM), rectus femoris (RF), and biceps femoris (BF). Performance testing included countermovement jumps (CMJs) and 30-m sprints. A time × sex interaction was found for GM delay time with women primarily influencing changes (mean difference = 2.74 ms) rather than men (mean difference = 1.32 ms). Main effects for time revealed an increase in GMH velocity of contraction (+0.004 mm·ms-1) and reductions in GM contraction time (-2.85 ms), GM delay time (-2.03 ms), RF delay time (-0.65 ms), CMJs (-2.74 cm), and 30-m time (0.05 seconds). Main effects for sex revealed greater values in women for GM contraction time (+15.50 ms), GM delay time (+6.65 ms), RF delay time (+2.26 ms), BF contraction time (+8.44 ms), BF delay time (+4.07 ms), BF maximal displacement (+2.27 mm), and 30-m time (+0.67 seconds), and lower values in women for GM velocity of contraction (-0.039 mm·ms-1) and CMJs (-13.46 cm).These findings may help practitioners optimize performance through enhanced assessments for injury risk, targeting specific muscles for training, and by selecting proper CAs and rest periods when using PAP.
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Affiliation(s)
- Chad H Herring
- Physiology of Work and Exercise Response (POWER) Laboratory, Institute of Exercise Physiology and Rehabilitation Science, University of Central Florida, Orlando, Florida; and
- Division of Kinesiology, School of Kinesiology and Physical Therapy, University of Central Florida, Orlando, Florida
| | - Erica R Goldstein
- Physiology of Work and Exercise Response (POWER) Laboratory, Institute of Exercise Physiology and Rehabilitation Science, University of Central Florida, Orlando, Florida; and
- Division of Kinesiology, School of Kinesiology and Physical Therapy, University of Central Florida, Orlando, Florida
| | - David H Fukuda
- Physiology of Work and Exercise Response (POWER) Laboratory, Institute of Exercise Physiology and Rehabilitation Science, University of Central Florida, Orlando, Florida; and
- Division of Kinesiology, School of Kinesiology and Physical Therapy, University of Central Florida, Orlando, Florida
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Jung J, Kim K, Choi S, Song G, Ryu Y, Kim C, Lim C. Movement Time of Lower Trunk Muscles during Dynamic Postural Control in Response to a Sudden Visual Stimulus during Walking: A Pilot Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18095015. [PMID: 34068484 PMCID: PMC8125989 DOI: 10.3390/ijerph18095015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 05/03/2021] [Accepted: 05/07/2021] [Indexed: 11/16/2022]
Abstract
Postural control during walking is maintained by the combination of various factors. Among these factors, adjustment of trunk movement is essential for maintaining postural control, and the response of muscles to unpredictable stimuli affects postural control. Loss of balance while walking increases the risk of accidents, the frequency of which depends on age and sex. In this study, we investigated whether there was a difference in the movement time of trunk muscles to sudden stimulation while walking according to age and sex. Fourteen healthy individuals aged 20-30 years (6 men, 8 women) and 12 individuals aged 50-70 years (4 men, 8 women) were included in the study. Movement time of bilateral erector spinae and rectus abdominis muscles in response to visual stimulation during walking was examined using surface electromyography. Movement time was calculated as the total muscle activation time excluding the reaction time. This study revealed no significant differences in movement time of the erector spinae muscles according to sex or age. The role of the rectus abdominis muscles in maintaining posture during walking was insignificant. In conclusion, the movement time of trunk muscles in response to sudden visual stimulation during walking did not differ by age or sex, and the difference in accident frequency may be associated with deterioration of other factors required to maintain posture.
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Affiliation(s)
- Jaehyun Jung
- College of Medicine, Korea University, Seoul 02841, Korea; (J.J.); (S.C.); (G.S.)
- Division of Rheumatology, Department of Internal Medicine, Korea University Ansan Hospital, Ansan 15355, Korea
| | - Kewwan Kim
- Department of Physical Education, College of Arts and Physical Education, Incheon National University, Incheon 22012, Korea;
| | - Sungjae Choi
- College of Medicine, Korea University, Seoul 02841, Korea; (J.J.); (S.C.); (G.S.)
- Division of Rheumatology, Department of Internal Medicine, Korea University Ansan Hospital, Ansan 15355, Korea
| | - Gwangyu Song
- College of Medicine, Korea University, Seoul 02841, Korea; (J.J.); (S.C.); (G.S.)
- Department of Internal Medicine, Division of Rheumatology, Korea University Guro Hospital, Seoul 08308, Korea
| | - Young Ryu
- Department of Physical Education, Graduate School of Incheon National University, Incheon 22012, Korea;
| | - Cholhee Kim
- Department of Physical Education, Graduate School of Incheon National University, Incheon 22012, Korea;
- Correspondence: (C.K.); (C.L.); Tel.: +82-32-820-4424 (C.L.); Fax: +82-32-820-4069 (C.L.)
| | - Chaegil Lim
- Department of Physical Therapy, Gachon University, Incheon 21936, Korea
- Correspondence: (C.K.); (C.L.); Tel.: +82-32-820-4424 (C.L.); Fax: +82-32-820-4069 (C.L.)
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10
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Lohr C, Medina-Porqueres I. Immediate effects of myofascial release on neuromechanical characteristics in female and male patients with low back pain and healthy controls as assessed by tensiomyography. A controlled matched-pair study. Clin Biomech (Bristol, Avon) 2021; 84:105351. [PMID: 33848704 DOI: 10.1016/j.clinbiomech.2021.105351] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 03/04/2021] [Accepted: 04/01/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Low back pain (LBP) is a major health issue in most industrialised countries. Lumbodorsal fascia has been advocated as a potential source of pain in the lumbopelvic region. Myofascial release constitutes a manual therapeutic approach focussing on the restoration of altered soft tissue function. No previous study has focused on quantifying neuromechanical effects of myofascial release on LBP patients through tensiomyography. The purpose of this study was to quantify immediate neuromechanical alterations of myofascial release on patients with LBP and healthy controls through tensiomyography parameters. METHODS The participants' (n = 30) bilateral lumbar erector spinae muscles were assessed via tensiomyography before and after a 6-min myofascial release treatment of the lumbodorsal fascia to evaluate the muscles' mechanical characteristics. Subjects with LBP (n = 15) were eligible to partake if they reported having had LBP for most days in the past 12 weeks. Muscle displacement (Dm [mm]), velocity of contraction (Vc [mm/s]), and lateral symmetry (Ls [%]) were assessed through tensiomyography testing. FINDINGS Statistical analyses revealed a significant increase for velocity of contraction in the right (p = .021) and left (p = .041) lumbar erector spinae for the subjects with LBP but not for the healthy controls (both p > .14). INTERPRETATION We suggested that myofascial release alters neuromechanical characteristics in subjects with LBP. Tensiomyography may be implemented in clinical settings to monitor intervention effects of the myofascial system, especially the tensiomyography parameter velocity of contraction.
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Affiliation(s)
- Christine Lohr
- Department of Sports and Exercise Medicine, Institute for Human Movement Science, Faculty for Psychology and Human Movement Science, University of Hamburg, Hamburg, Germany.
| | - Ivan Medina-Porqueres
- Department of Physical Therapy, Faculty of Health Sciences, University of Malaga, Malaga, Spain.
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Macchi R, Vercruyssen F, Hays A, Aubert G, Exubis G, Chavet P, Goubert E, Souron R, Kunimasa Y, Nicol C. Sex Influence on the Functional Recovery Pattern After a Graded Running Race: Original Analysis to Identify the Recovery Profiles. Front Physiol 2021; 12:649396. [PMID: 33815153 PMCID: PMC8012843 DOI: 10.3389/fphys.2021.649396] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 02/23/2021] [Indexed: 11/13/2022] Open
Abstract
This study investigated the sex influence on the acute and delayed fatigue effects of a 20 km graded running race. Eighteen recreational runners, 10 women and 8 men, completed the race. The testing protocol included five sessions: a week before the race (PRE), 35 ± 15 min after (POST), 2 h, 2 and 4 days (2D and 4D) later. Each session included uni- and bilateral maximal isometric voluntary contractions of the knee extensors (MVC), a squat jump (SJ), and a drop jump (DJ). Acute and delayed muscle soreness (DOMS) were evaluated for the quadriceps, hamstring and triceps surae muscle groups. The 2D and 4D sessions included also a horizontal force-velocity test (HF-V) performed under five resistive conditions. For each test, a set of key variables was computed to characterize the lower limb functional recovery. Mixed ANOVA analyses revealed significant (sex × time) interactions, with larger acute drops for men in MVCs and earlier recovery for women in the bilateral MVC (p < 0.001) and DJ (p < 0.05) tests. Only women reported DOMS for the hamstrings at 2D (p < 0.001) and showed small improvements in pure concentric SJ (p < 0.05) and HF-V (p < 0.01) tests at 4D. As expected, DOMS disappeared prior to the complete functional recovery. These results confirmed the combined influence of testing task and sex on the functional recovery pattern while supporting a lesser and faster recovery in women. The originality of this study lies in the complexity and sex-dependence of the functional recovery pattern revealed by a multiple factorial analysis which was used to identify the most discriminating tests and variables in the recovery pattern. The obtained clusters highlighted some recovery profiles associated with greater risks of injury when starting to run again. However, the lack of sex × time interaction for normalized values emphasizes the major influence of men’s initially higher functional values compared to women.
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Affiliation(s)
- Robin Macchi
- Institute of Movement Sciences (ISM), National Center of Scientific Research (CNRS) & Aix Marseille Univ, Marseille, France
| | - Fabrice Vercruyssen
- Impact of Physical Activity on Health (IAPS), University of Toulon, Toulon, France
| | - Arnaud Hays
- Institute of Movement Sciences (ISM), National Center of Scientific Research (CNRS) & Aix Marseille Univ, Marseille, France
| | - Gaetan Aubert
- Institut Carnot STAR, Aix Marseille Univ, Marseille, France
| | - Gaetan Exubis
- Institut Carnot STAR, Aix Marseille Univ, Marseille, France
| | - Pascale Chavet
- Institute of Movement Sciences (ISM), National Center of Scientific Research (CNRS) & Aix Marseille Univ, Marseille, France
| | - Emmanuelle Goubert
- Institute of Movement Sciences (ISM), National Center of Scientific Research (CNRS) & Aix Marseille Univ, Marseille, France
| | - Robin Souron
- Impact of Physical Activity on Health (IAPS), University of Toulon, Toulon, France
| | - Yoko Kunimasa
- Osaka University of Health and Sport Sciences, Osaka, Japan
| | - Caroline Nicol
- Institute of Movement Sciences (ISM), National Center of Scientific Research (CNRS) & Aix Marseille Univ, Marseille, France
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12
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Gianakos AL, Yurek JW, Mulcahey MK. Sex-Related Differences in Hip Injury Rates and Strength and Conditioning. Clin Sports Med 2021; 40:399-408. [PMID: 33673895 DOI: 10.1016/j.csm.2020.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Hip injuries are common in the athletic population, typically occurring in sports as a result of contact or overuse. Previous literature describes differences in injury rates between male and female athletes, clinical presentation, treatment, and outcomes. In addition, anatomic differences in acetabular and femoral version, hip alpha angles, lateral center-edge angles, pelvic tilt, and knee biomechanics have been demonstrated. These differences may alter injury patterns between male and female athletes and contribute to differences in hip pathology. Therefore, individualized treatment and rehabilitation strategies should be taken into consideration in order to expedite an athlete's return to play.
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Affiliation(s)
- Arianna L Gianakos
- Department of Orthopaedic Surgery, Robert Wood Johnson Barnabas Health - Jersey City Medical Center (Colony Plaza) Suite 14 Grand Street, Jersey City, NJ 07302, USA
| | - John W Yurek
- Department of Orthopaedic Surgery, Robert Wood Johnson Barnabas Health - Jersey City Medical Center (Colony Plaza) Suite 14 Grand Street, Jersey City, NJ 07302, USA
| | - Mary K Mulcahey
- Department of Orthopaedic Surgery, Tulane University School of Medicine, 1430 Tulane Avenue #8632, New Orleans, LA 70112, USA.
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Toskić LD, Dopsaj MJ, Marković MR, Toskić DR, Ignjatović AM. Mechanical and Contractile Properties of Knee Joint Muscles Measured by the Method of Tensiomyography in Differently Trained Men and Women. J Strength Cond Res 2020; 36:1532-1539. [DOI: 10.1519/jsc.0000000000003662] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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