Acute effect of flexible bar exercise on scapulothoracic muscles activation, on isometric shoulder abduction force and proprioception of the shoulder of individuals with and without subacromial pain syndrome

Boarati, Eduardo de Lima; Hotta, Gisele Harumi; McQuade, Kevin J.; Oliveira, Anamaria Siriani de

doi:10.1016/j.clinbiomech.2019.12.001

Cited by 7 publications

(14 citation statements)

References 39 publications

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“…However, many unsolved issues for natural interaction with the human body remain, especially in terms of kinematic singularities [20] and upper-limb biomechanics [21][22][23], e.g. shoulder elevation [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Kinematic of the Position and Orientation Synchronization of the Posture of a n DoF Upper-Limb Exoskeleton with a Virtual Object in an Immersive Virtual Reality Environment

Huamanchahua¹,

Martínez²,

Ramirez‐Mendoza³

2021

Electronics

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Exoskeletons are an external structural mechanism with joints and links that work in tandem with the user, which increases, reinforces, or restores human performance. Virtual Reality can be used to produce environments, in which the intensity of practice and feedback on performance can be manipulated to provide tailored motor training. Will it be possible to combine both technologies and have them synchronized to reach better performance? This paper consists of the kinematics analysis for the position and orientation synchronization between an n DoF upper-limb exoskeleton pose and a projected object in an immersive virtual reality environment using a VR headset. To achieve this goal, the exoskeletal mechanism is analyzed using Euler angles and the Pieper technique to obtain the equations that lead to its orientation, forward, and inverse kinematic models. This paper extends the author’s previous work by using an early stage upper-limb exoskeleton prototype for the synchronization process.

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Section: Introductionmentioning

confidence: 99%

Kinematic of the Position and Orientation Synchronization of the Posture of a n DoF Upper-Limb Exoskeleton with a Virtual Object in an Immersive Virtual Reality Environment

Huamanchahua¹,

Martínez²,

Ramirez‐Mendoza³

2021

Electronics

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“…Warner [40] that used FB. It was considered that the mechanism for improved JPS was that vibration stimuli from FB increased joint stability by activation of the joint mechanoreceptors, and stimulated alpha and gamma motor neurons related to improved JPS [16,28]. FB necessitates neuromuscular control and proprioceptive feedback to optimize a rhythmic pattern of alternating contraction between the agonist and antagonist muscles [40].…”

Section: Discussionmentioning

confidence: 99%

“…The exclusion criteria were a previous history of shoulder surgery or trauma, such as physical injuries caused by an external force and stroke, epilepsy, multiple sclerosis, Parkinson's disease, or peripheral neuropathy. Additional exclusion criteria were lateral or medial epicondylitis, carpal tunnel syndrome, tendinopathies, or upper-extremity problems such as shoulder tendinitis, impingement, or pain due to difficulty in performing the exercise in this study [27,28]. individuals who could not perform KPP without discomfort were excluded [29].…”

Section: Subjectsmentioning

confidence: 99%

“…The subjects maintained with the position with the elbows in slight flexion (approximately 30°) and the shoulders in 90° flexion against the vibration of the FB. FB exercise was performed using FLEXI-BAR ® Standard (REDBALANCE, Seoul, Korea) that was 1.6m long, weighed 0.65 g, and was composed of fiberglass and rubber (Figure2)[28]. Bar oscillation was generated in the sagittal plane with anteroposterior movements, and resulted in an oscillation frequency of 4.5 Hz[19,24,28,36].…”

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confidence: 99%

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Immediate Effects of Flexi-bar Exercise With Knee Push-up Plus on Shoulder Joint Position Sense and Muscle Activity in Subjects With Scapular Winging

Kim

Cynn

Baik

2021

Physical Therapy Korea

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“…While GH is often considered to have three DOF [50], its axis of rotation changes as shoulder moves; hence in simulation, it is crucial to implement a clearance area so as to let GH anatomically moves as human moving his/her arm. There are studies where various methods are applied in order to replicate shoulder movements under different conditions with various level of impairment [51,52]. Arm rotation that originates at the shoulder joint can also be affected through any simplification in modeling, or external pressure from an outside agent, such as exoskeletons.…”

Section: Exoskeleton Alignment and Its Effect On The Shoulder Muscles: Case Studymentioning

confidence: 99%

Shoulder Kinematics Assessment towards Exoskeleton Development

et al. 2020

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Neuromuscular and sensorimotor degeneration caused by stroke or any other disease significantly reduce the physical, cognitive, and social well-being across the life span. Mostly, therapeutic interventions are employed in order to restore the lost degrees-of-freedom (DOF) caused by such impairments and automating these therapeutic tasks through exoskeletons/robots is becoming a common practice. However, aligning these robotic devices with the complex anatomical and geometrical motions of the joints is very challenging. At the same time, a good alignment is required in order to establish a better synergy of human-exoskeleton system for an effective intervention procedure. In this paper, a case study of an exoskeleton and shoulder joint alignment were studied through different size and orientation impairment models through motion capture data and musculoskeletal modeling in OpenSim. A preliminary result indicates that shoulder elevation is very sensitive to misalignment and varies with shoulder joint axes orientation; this is partly due to drastic displacement of the upper arm axes with respect to the shoulder joint origin during elevation. Additional study and analysis is required to learn any possible restraint on shoulder elevation that could potentially help in the exoskeleton development.

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Acute effect of flexible bar exercise on scapulothoracic muscles activation, on isometric shoulder abduction force and proprioception of the shoulder of individuals with and without subacromial pain syndrome

Cited by 7 publications

References 39 publications

Kinematic of the Position and Orientation Synchronization of the Posture of a n DoF Upper-Limb Exoskeleton with a Virtual Object in an Immersive Virtual Reality Environment

Kinematic of the Position and Orientation Synchronization of the Posture of a n DoF Upper-Limb Exoskeleton with a Virtual Object in an Immersive Virtual Reality Environment

Immediate Effects of Flexi-bar Exercise With Knee Push-up Plus on Shoulder Joint Position Sense and Muscle Activity in Subjects With Scapular Winging

Shoulder Kinematics Assessment towards Exoskeleton Development

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