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Taghizadeh Delkhoush C, Purzolfi M, Mirmohammadkhani M, Sadollahi H, Tavangar S. The linear intra-articular motions of the temporomandibular joint in individuals with severe forward head posture: A cross-sectional study. Musculoskelet Sci Pract 2024; 70:102908. [PMID: 38246011 DOI: 10.1016/j.msksp.2024.102908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 01/10/2024] [Accepted: 01/12/2024] [Indexed: 01/23/2024]
Abstract
BACKGROUND The cervical vertebrae and the temporomandibular joint (TMJ) may be linked through their common muscles. OBJECTIVES The aim of the present study was to compare the linear intra-articular motions of the TMJ between individuals with the normal craniocervical posture (CCP) and severe forward head posture (FHP). DESIGN Cross-sectional study. METHODS Volunteers (N = 38) were equally assigned to either the severe FHP group or the normal CCP group according to their craniovertebral angle (CVA). The CVA angles greater than 49° were considered as the normal CCP while angles between 44 and 40° were regarded as the severe FHP. The TMJ was imaged at the closed, median, and maximum open positions of the mouth using an ultrasound machine with a 7.5 MHz linear transducer in the sitting position. The best-fitting curve in the contour registration method was employed to measure displacement of the mandibular condyle on the transverse and vertical axes. RESULTS The forward displacement of the mandibular condyle in the severe FHP group was significantly (p-value = 0.037) reduced compared to the normal CCP group at maximum open position of the mouth, while no significant difference was revealed at closed (p-value = 0.937) or median open (p-value = 0.699) positions. The perpendicular displacement of the mandibular condyle exhibited no significant (p-value>0.107) difference between groups at any mouth position. DISCUSSION The current study demonstrated, for the first time, that severe FHP may impact the intra-articular motion of the TMJ. This study presumed that individuals with severe FHP may encounter a force imbalance in the anterior-posterior direction.
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Affiliation(s)
| | - Mahdis Purzolfi
- Department of Physiotherapy, School of Rehabilitation Sciences, Semnan University of Medical Sciences, Semnan, Iran.
| | - Majid Mirmohammadkhani
- Social Determinants of Health Research Center, Semnan University of Medical Sciences, Semnan, Iran.
| | - Hasti Sadollahi
- School of Dentistry, Semnan University of Medical Sciences, Semnan, Iran.
| | - Shiva Tavangar
- Department of Physiotherapy, School of Rehabilitation Sciences, Semnan University of Medical Sciences, Semnan, Iran.
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Pirayeh N, Heidary Z, Mehravar M, Shaterzadeh Yazdi MJ, Mostafaee N. Sensory Organization and Postural Control Strategies in Individuals With Mild and Moderate-to-Severe Forward Head Posture: A Comparative Study. J Manipulative Physiol Ther 2024:S0161-4754(24)00004-6. [PMID: 38530697 DOI: 10.1016/j.jmpt.2024.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 02/23/2024] [Accepted: 02/26/2024] [Indexed: 03/28/2024]
Abstract
OBJECTIVE This study aimed to compare sensory organization test and postural control strategies between individuals with mild and moderate-to-severe forward head posture (FHP). METHODS A sensory organization test (SOT) was performed in 6 conditions using computerized dynamic posturography, to assess postural control. Equilibrium scores representing overall balance, strategy analysis to assess ankle vs hip strategy dominance, and sensory analysis (Somatosensory, visual, vestibular, visual preference ratio) as an indicator of the use of sensory systems were obtained. RESULTS Our results revealed a significant difference between the 2 groups in terms of equilibrium score (P < .05) and strategy scores (P < .05) in conditions of 4 to 6 of the SOT. The results of sensory analysis of SOT showed visual and vestibular ratios were significantly different between the 2 study groups (P < .05), but somatosensory and visual preference ratios were not significantly different between these 2 groups (P > .05). CONCLUSION Individuals with moderate-to-severe FHP swayed more in comparison with mild FHP ones in conditions with the Sway-referenced platform of the SOT. They tended to rely on the hip strategy more than the ankle strategy excessively when sensory difficulty increased. Overall, it can be concluded that individuals with moderate-to-severe FHP are more likely to have postural deficits.
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Affiliation(s)
- Nahid Pirayeh
- Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Department of Physiotherapy, School of Rehabilitation Sciences, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Zahra Heidary
- Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammad Mehravar
- Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Department of Physiotherapy, School of Rehabilitation Sciences, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammad Jafar Shaterzadeh Yazdi
- Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Department of Physiotherapy, School of Rehabilitation Sciences, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Neda Mostafaee
- Department of Physical Therapy, School of Paramedical and Rehabilitation Sciences, Mashhad University of Medical Sciences, Mashhad, Iran; Orthopedic Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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Nast I, Scheermesser M, Ernst M, Sommer B, Schmid P, Weisenhorn M, E B, Gomez D, Iten P, von Wartburg A, Frey W, Lünenburger L, Bauer C. Usability of a visual feedback system to assess and improve movement disorders related to neck pain: Perceptions of physical therapists and patients. Heliyon 2024; 10:e26931. [PMID: 38434337 PMCID: PMC10907800 DOI: 10.1016/j.heliyon.2024.e26931] [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: 08/10/2022] [Revised: 02/19/2024] [Accepted: 02/21/2024] [Indexed: 03/05/2024] Open
Abstract
A prototype visual feedback system has been developed to assess and improve movement disorders related to neck pain. The aim of this study was to assess the usability of the prototype in a rehabilitation setting. Twelve physical therapists integrated the device into their regular therapy programs for 24 neck pain patients with movement disorders. Each patient performed three individual therapy sessions with the device under physical therapist supervision. Usability was assessed by the physical therapists and patients using therapy diaries, the System Usability Scale, and focus group or personal interviews. Based on an overall usability rating of marginally acceptable, the visual feedback system was generally found to be a device with the potential to assess and train neck pain patients but needs improvement. To become a useful adjunct to regular physical therapy, improvements in the hardware and software, and further system developments are required.
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Affiliation(s)
- I. Nast
- Zurich University of Applied Sciences, School of Health Professions, Institute of Physiotherapy, Katharina-Sulzer-Platz 9, 8401, Winterthur, Switzerland
| | - M. Scheermesser
- Zurich University of Applied Sciences, School of Health Professions, Institute of Physiotherapy, Katharina-Sulzer-Platz 9, 8401, Winterthur, Switzerland
| | - M.J. Ernst
- Zurich University of Applied Sciences, School of Health Professions, Institute of Physiotherapy, Katharina-Sulzer-Platz 9, 8401, Winterthur, Switzerland
| | - B. Sommer
- Zurich University of Applied Sciences, School of Health Professions, Institute of Physiotherapy, Katharina-Sulzer-Platz 9, 8401, Winterthur, Switzerland
| | - P. Schmid
- Zurich University of Applied Sciences, School of Engineering, Institute of Signal Processing and Wireless Communications, Technikumstrasse 71, 8400, Winterthur, Switzerland
| | - M. Weisenhorn
- Zurich University of Applied Sciences, School of Engineering, Institute of Signal Processing and Wireless Communications, Technikumstrasse 71, 8400, Winterthur, Switzerland
| | - Bärtschi E
- Balgrist University Hospital, Forchstrasse 340, 8008, Zürich, Switzerland
| | - D. Gomez
- Cantonal Hospital, Winterthur Brauerstrasse 15, 8401, Winterthur, Switzerland
| | - P. Iten
- Cantonal Hospital, Winterthur Brauerstrasse 15, 8401, Winterthur, Switzerland
- Physiowerk Aadorf, Hauptstrasse 47, 8355, Aadorf, Switzerland
| | - A. von Wartburg
- Hocoma AG, Industriestrasse 4, 8604, Volketswil, Switzerland
| | - W.O. Frey
- Balgrist University Hospital, Forchstrasse 340, 8008, Zürich, Switzerland
- Clinic Hirslanden, Klinik Hirslanden, Dr. med. Walter O. Frey, Witellikerstrasse 40, 8032, Zürich, Switzerland
| | - L. Lünenburger
- Hocoma AG, Industriestrasse 4, 8604, Volketswil, Switzerland
| | - C.M. Bauer
- Zurich University of Applied Sciences, School of Health Professions, Institute of Physiotherapy, Katharina-Sulzer-Platz 9, 8401, Winterthur, Switzerland
- Lake Lucerne Institute, Seestrasse 18, 6354, Vitznau, Switzerland
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Saad N, Moustafa IM, Ahbouch A, Alsaafin NM, Oakley PA, Harrison DE. Are Rotations and Translations of Head Posture Related to Gait and Jump Parameters? J Clin Med 2023; 12:6211. [PMID: 37834858 PMCID: PMC10573992 DOI: 10.3390/jcm12196211] [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: 07/09/2023] [Revised: 08/13/2023] [Accepted: 09/20/2023] [Indexed: 10/15/2023] Open
Abstract
This study assessed the relationship between head posture displacements and biomechanical parameters during gait and jumping. One hundred male and female students (20 ± 3 yrs) were assessed via the PostureScreen Mobile® app to quantify postural displacements of head rotations and translations including: (1) the cranio-vertebral angle (CVA) (°), (2) anterior head translation (AHT) (cm), (3) lateral head translation in the coronal plane (cm), and (4) lateral head side bending (°). Biomechanical parameters during gait and jumping were measured using the G-Walk sensor. The assessed gait spatiotemporal parameters were cadence (steps/min), speed (m/s), symmetry index, % left and right stride length (% height), and right and left propulsion index. The pelvic movement parameters were (1) tilt symmetry index, (2) tilt left and right range, (3) obliquity symmetry index, (4) obliquity left and right range, (5) rotation symmetry index, and (6) rotation left and right range. The jump parameters measured were (1) flight height (cm), (2) take off force (kN), (3) impact Force (kN), (4) take off speed (m/s), (5) peak speed (m/s), (6) average speed concentric phase (m/s), (7) maximum concentric power (kW), (8) average concentric power (kW) during the counter movement jump (CMJ), and (9) CMJ with arms thrust (CMJAT). At a significance level of p ≤ 0.001, moderate-to-high correlations (0.4 < r < 0.8) were found between CVA, AHT, lateral translation head, and all the gait and jump parameters. Weak correlations (0.2 < r < 0.4) were ascertained for lateral head bending and all the gait and jump parameters except for gait symmetry index and pelvic symmetry index, where moderate correlations were identified (0.4 < r < 0.6). The findings indicate moderate-to-high correlations between specific head posture displacements, such as CVA, lateral head translation and AHT with the various gait and jump parameters. These findings highlight the importance of considering head posture in the assessment and optimization of movement patterns during gait and jumping. Our findings contribute to the existing body of knowledge and may have implications for clinical practice and sports performance training. Further research is warranted to elucidate the underlying mechanisms and establish causality in these relationships, which could potentially lead to the development of targeted interventions for improving movement patterns and preventing injuries.
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Affiliation(s)
- Nabil Saad
- Department of Physiotherapy, College of Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates (I.M.M.)
| | - Ibrahim M. Moustafa
- Department of Physiotherapy, College of Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates (I.M.M.)
- Neuromusculoskeletal Rehabilitation Research Group, RIMHS–Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Amal Ahbouch
- Department of Physiotherapy, College of Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates (I.M.M.)
| | - Nour Mustafa Alsaafin
- Department of Physiotherapy, College of Health Sciences, University of Sharjah, Sharjah 27272, United Arab Emirates (I.M.M.)
| | - Paul A. Oakley
- Kinesiology and Health Sciences, York University, Toronto, ON M3J 1P3, Canada
- Independent Researcher, Newmarket, ON L3Y 8Y8, Canada
| | - Deed E. Harrison
- CBP Nonprofit (a Spine Research Foundation), Eagle, ID 83616, USA
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Menevşe Ö, Kepenek-Varol B, Gültekin M, Bilgin S. Cervical proprioception in Parkinson's disease and its correlation with manual dexterity function. J Mov Disord 2023; 16:295-306. [PMID: 37394236 PMCID: PMC10548074 DOI: 10.14802/jmd.23039] [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: 02/22/2023] [Revised: 04/26/2023] [Accepted: 06/30/2023] [Indexed: 07/04/2023] Open
Abstract
OBJECTIVE Cervical proprioception plays a crucial role in posture and movement control. This study aimed to determine the relationships of cervical proprioception, cervical muscle strength and endurance with manual dexterity and hand strength in individuals with idiopathic Parkinson's disease (PD). METHODS Twenty individuals with PD (mean age: 63.9 years) and 20 healthy individuals as a control group (mean age: 61.9 years) were recruited. Cervical joint position error (JPE), static endurance of neck muscles, activation of deep cervical flexor muscles (Craniocervical Flexion Test, CCFT), manual dexterity (Purdue Pegboard Test, PPT), cognitive and motor tasks of the PPT, finger tapping test (FTT), pinch strength, and grip strength were assessed. RESULTS Cervical JPE was significantly higher in individuals with PD than in controls (p < 0.05). The strength and endurance of the cervical muscles were significantly decreased in individuals with PD (p < 0.05). Cervical JPE measurements were negatively correlated with PPT, cognitive and motor tasks of the PPT in individuals with PD (all p < 0.05). The endurance of cervical flexor muscles was negatively correlated with PPT and cognitive PPT scores in the PD group (p < 0.05). In addition, a significant positive correlation was found between cervical flexor endurance and hand strength in the PD group (p < 0.05). CONCLUSION Cervical proprioception and the strength and endurance of cervical muscles decrease in individuals with PD compared to healthy individuals. Impairment of cervical proprioception appears to be associated with poorer upper extremity performance. Detailed evaluation of the cervical region in PD may help determine the factors affecting upper extremity function.
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Affiliation(s)
- Özlem Menevşe
- Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Nuh Naci Yazgan University, Kayseri, Turkey
| | - Büşra Kepenek-Varol
- Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Nuh Naci Yazgan University, Kayseri, Turkey
| | - Murat Gültekin
- Department of Neurology, Faculty of Medicine, Erciyes University, Kayseri, Turkey
- Department of Neurology, Faculty of Medicine, İstanbul Atlas University, İstanbul, Turkey
| | - Sevil Bilgin
- Department of Physiotherapy and Rehabilitation, Faculty of Physical Therapy and Rehabilitation, Hacettepe University, Ankara, Turkey
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Neck and Upper Extremity Musculoskeletal Symptoms Secondary to Maladaptive Postures Caused by Cell Phones and Backpacks in School-Aged Children and Adolescents. Healthcare (Basel) 2023; 11:healthcare11060819. [PMID: 36981476 PMCID: PMC10048647 DOI: 10.3390/healthcare11060819] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 02/26/2023] [Accepted: 03/06/2023] [Indexed: 03/15/2023] Open
Abstract
Technology is an essential part of our lives. Nowadays, it is almost impossible to leave the house without a cell phone. Despite the wide range of benefits of cell phones and handheld electronic devices, this evolution of technology has not come without a price. The pandemic of cell phone use among children and young adolescents has led to the emergence of a set of musculoskeletal (MSK) symptoms that have not been seen before in this age group. These symptoms can range from neck and shoulder discomfort to pain, peripheral neurological symptoms of the upper extremity, and long-term complications such as disk prolapse and degenerative disk disease of the cervical spine. This clinical presentation is known as “text neck syndrome.” In addition to MSK symptoms, text neck syndrome could also include eye and ear symptoms, psychological problems, peripheral neurological symptoms, and poor academic performance. Multiple mechanisms have been discussed by which cell phone use causes MSK symptoms. Maladaptive postures, a decrease in physical activity leading to obesity, and the direct effect of electromagnetic radiation are some of the mechanisms by which long-term use of cell phones leads to the clinical presentation of text neck syndrome and its long-term consequences. The purpose of this article is to review the literature, discuss the epidemiology of cell phone use and MSK symptoms associated with its use in children and adolescents, describe its clinical presentation, explain the pathophysiology behind it, and provide preventative guidelines that can be used by this age group to allow for the continued use of these electronics without harmful effects on their posture and long-term health.
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Sarraf F, Varmazyar S. Comparing the effect of the posture of using smartphones on head and neck angles among college students. ERGONOMICS 2022; 65:1631-1638. [PMID: 35199629 DOI: 10.1080/00140139.2022.2047229] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 02/21/2022] [Indexed: 06/14/2023]
Abstract
Smartphone users' posture can affect the musculoskeletal load of the user's neck. This study aims to compare the effect of the posture of using smartphones on head and neck angles among college students. The cross-sectional study was conducted among 80 college students. The Severity of Neck Pain (SNP) and the head and neck tilt angles, the gaze angle, and the amount of change in the forward head posture were determined. The angles were measured in three postures including standing, sitting on a chair with and without a backrest. Most of the participants (51.3%) reported moderate and severe neck pain. The angles during using smartphone had a significant difference in different positions, so that the best head (100.6 ± 11.3°) and neck (32.5 ± 11.2°) tilt angles and gaze angle (58.2 ± 13.7°) were in sitting position with leaning on a backrest of the chair. Head (109.6 ± 14.4°) and neck (22.0 ± 12.6°) tilt angles, and the forward head posture (15.9 ± 4.9 cm) have the worst posture in sitting position on a chair without a backrest while gaze angle (67.1 ± 12.0°) has the most awkward posture in standing. Practitioner summary: The posture of using a smartphone affects the amount of pressure on the neck. This study aims to investigate the effect of different positions of using smartphone on head and neck angles among Iranian university students. The angles during using smartphone had a significant difference in different positions.
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Affiliation(s)
- Faeze Sarraf
- M.Sc. Occupational Health Engineering, Faculty of Health, Student Research Committee, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Sakineh Varmazyar
- Department of Occupational Health Engineering, Faculty of Health, Social Determinants Health Research Center, Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran
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The relationship between forward head posture, postural control and gait: A systematic review. Gait Posture 2022; 98:316-329. [PMID: 36274469 DOI: 10.1016/j.gaitpost.2022.10.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 07/29/2022] [Accepted: 10/12/2022] [Indexed: 02/02/2023]
Abstract
BACKGROUND Forward head posture (FHP) is a common postural deviation. An increasing number of studies have reported that people with FHP present with impaired postural control and gait; however, there is conflicting evidence. A systematic review focusing on these relationships has been unavailable to date. RESEARCH QUESTION Is there a relationship between FHP, postural control and gait? METHODS This systematic review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) statement (PROSPERO ID: CRD42021231908). Web of Science, PubMed, Scopus, and CINAHL Plus (via EBSCO) were systematically searched, and a manual search was performed using the reference lists of included studies. Eligible studies included observational studies addressing the relationship between FHP, postural control and/or gait. Quality assessment was conducted using the Joanna Briggs Institute Critical Appraisal Checklist for Cross-Sectional Studies. RESULTS Nineteen studies were selected for this review. Consistent evidence supported that people with FHP had significant alterations in limits of stability (n = 3), performance-based balance (n = 3), and cervical proprioception (n = 4). Controversial evidence existed for a relationship of FHP with static balance (n = 4) and postural stability control (n = 4). Limited evidence existed to support an alteration in gait and vestibular function. Three studies on induced FHP consistently identified no reduced postural control. SIGNIFICANCE Current evidence supports an association between FHP and a detrimental alteration in limits of stability, performance-based balance, and cervical proprioception. Instead of simply indicating impaired overall balance, the findings of this review indicate that a reduction in specific aspects of the postural control requires to be clarified in clinical evaluation for individuals with FHP, which would facilitate the planning and application of appropriate interventions to prevent dysfunctions and disability.
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Niaradi FDSL, Niaradi MFDSL, Gasparetto MERF. Effect of Eutonia, Holistic gymnastics and pilates on body posture for pré-adolescent girls: Randomized clinical trial. J Bodyw Mov Ther 2022; 30:226-236. [DOI: 10.1016/j.jbmt.2022.02.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 11/02/2021] [Accepted: 02/04/2022] [Indexed: 11/27/2022]
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Vojta Approach Affects Neck Stability and Static Balance in Sitting Position of Children With Hypotonia. Int Neurourol J 2021; 25:S90-95. [PMID: 34844391 PMCID: PMC8654318 DOI: 10.5213/inj.2142344.172] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 10/22/2021] [Indexed: 11/10/2022] Open
Abstract
Purpose In this study, the effect of the Vojta approach on neck stability and static balance in children with hypotonia was studied. Methods Seventeen children with hypotonia were randomly divided into the Vojta approach group (n=9) and the general physical therapy group (n=8). Each group was applied intervention for 30 minutes per session, 3 times a week, for a total of 4 weeks. Ultrasonography was used to measure deep neck flexor muscle thickness, craniovertebral angle (CVA) to measure neck alignment along the spine segment, and Balancia software program to measure static balance. Results In the Vojta approach group, the deep neck flexor muscle thickness was significantly increased (P<0.05), and the CVA was significantly improved (P<0.05). In addition, path area among static balance was significantly improved (P<0.05). Conclusions The Vojta approach can be suggested as an effective intervention method for improving neck stability and static balance in children with hypotonia.
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Neck proprioception assessment with a laser beam device: reliability in participants without neck pain and differences between participants with and without neck pain. BULLETIN OF FACULTY OF PHYSICAL THERAPY 2021. [DOI: 10.1186/s43161-021-00056-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Proprioception deficits have previously been reported in patients with non-specific chronic neck pain (NSCNP), with a comprehensive and valid battery of tests still required. This study aimed to investigate the test-retest and inter-rater reliability of cervical proprioception in participants without NSCNP and to examine differences in proprioception between participants with and without NSCNP. Twenty participants without NSCNP and 20 age- and sex-matched participants with NSCNP were recruited. Proprioception tests were sequentially performed in random order, in four head-to-neutral movement directions (starting positions at mid-flexion, mid-extension and mid-right/mid-left rotation head-neck positions and end position at neutral head-neck posture) and two head-to-target movement directions (starting position from neutral head-neck posture and end positions at right and left 45° rotation), with a laser beam device secured onto their forehead. Participants performed all tests in sitting at a 1-m distance from a whiteboard. The average deviations of the laser beam mark from set targets marked on the whiteboard represented proprioception deficits. The two-way random, absolute agreement model of the intraclass correlation coefficient (ICC), the standard error of the measurement (SEM) and the smallest detectable difference (SDD) were used as measures of reliability. Between-group differences were examined with the independent samples t test.
Results
The reliability of the laser beam device in participants without neck pain varied from poor to good. The following tests demonstrated good reliability: test-retest ‘Head-to-neutral from flexion’ (ICC: 0.77–0.78; SDD: 5.73–6.84 cm), inter-rater ‘Head-to-neutral from flexion’ (ICC: 0.80–0.82; SDD: 6.20–6.45 cm) and inter-rater ‘Head-to-neutral from right/left rotation’ (ICC: 0.80–0.84; SDD: 5.92–6.81 cm). Differences between participants with and without NSCNP were found only in head-to-neutral from flexion (4.10–4.70 cm); however, those were within the limits of the SDD values of the HtN from flexion test.
Conclusions
The laser beam device can be reliably used in clinical practice only in the aforementioned head-neck movement directions, based on the findings of the present study. The between-group differences noted involved only the head mid-flexion to neutral test, possibly denoting proprioception deficits only in this movement direction, for reasons that require further evaluation.
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Schmid PM, Bauer CM, Ernst MJ, Sommer B, Lünenburger L, Weisenhorn M. A Two Joint Neck Model to Identify Malposition of the Head Relative to the Thorax. SENSORS 2021; 21:s21093297. [PMID: 34068778 PMCID: PMC8126210 DOI: 10.3390/s21093297] [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: 03/03/2021] [Revised: 04/30/2021] [Accepted: 05/07/2021] [Indexed: 11/18/2022]
Abstract
Neck pain is a frequent health complaint. Prolonged protracted malpositions of the head are associated with neck pain and headaches and could be prevented using biofeedback systems. A practical biofeedback system to detect malpositions should be realized with a simple measurement setup. To achieve this, a simple biomechanical model representing head orientation and translation relative to the thorax is introduced. To identify the parameters of this model, anthropometric data were acquired from eight healthy volunteers. In this work we determine (i) the accuracy of the proposed model when the neck length is known, (ii) the dependency of the neck length on the body height, and (iii) the impact of a wrong neck length on the models accuracy. The resulting model is able to describe the motion of the head with a maximum uncertainty of 5 mm only. To achieve this high accuracy the effective neck length must be known a priory. If however, this parameter is assumed to be a linear function of the palpable neck length, the measurement error increases. Still, the resulting accuracy can be sufficient to identify and monitor a protracted malposition of the head relative to the thorax.
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Affiliation(s)
- Philipp M. Schmid
- Institute of Signal Processing and Wireless Communications, School of Engineering, Zurich University of Applied Sciences, Technikumstrasse 9, 8400 Winterthur, Switzerland; (P.M.S.); (M.W.)
| | - Christoph M. Bauer
- Institute of Physiotherapy, School of Health Professions, Zurich University of Applied Sciences, Katharina-Sulzer-Platz 9, 8400 Winterthur, Switzerland; (M.J.E.); (B.S.)
- Correspondence: ; Tel.: +41-58-934-64-49
| | - Markus J. Ernst
- Institute of Physiotherapy, School of Health Professions, Zurich University of Applied Sciences, Katharina-Sulzer-Platz 9, 8400 Winterthur, Switzerland; (M.J.E.); (B.S.)
| | - Bettina Sommer
- Institute of Physiotherapy, School of Health Professions, Zurich University of Applied Sciences, Katharina-Sulzer-Platz 9, 8400 Winterthur, Switzerland; (M.J.E.); (B.S.)
| | | | - Martin Weisenhorn
- Institute of Signal Processing and Wireless Communications, School of Engineering, Zurich University of Applied Sciences, Technikumstrasse 9, 8400 Winterthur, Switzerland; (P.M.S.); (M.W.)
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