A finite element model of the deltoid muscle and biomechanical analysis of the standing dumbbell fly for shoulder exercises

Dereshgi, Hamid Asadi; Serbest, Kasım

doi:10.1007/s40430-022-03745-y

Cited by 5 publications

(8 citation statements)

References 21 publications

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“…Upper limb load-bearing training is beneficial in daily life and for functional exercise 1 , 27 . However, load-bearing extravasation causes stress on shoulder tissues and may cause shoulder tissue damage.…”

Section: Discussionmentioning

confidence: 99%

“…Then, we used the model to analyze the effect of different loads on the abductor muscle and the stability of the shoulder joint. Upper limb load-bearing training is beneficial in daily life and for functional exercise 1,27 . However, loadbearing extravasation causes stress on shoulder tissues and may cause shoulder tissue damage.…”

Section: Discussionmentioning

confidence: 99%

“…Upper limb load bearing training is a common exercise and rehabilitation method for shoulder muscles that can effectively improve the muscle quality 1 – 4 . To improve or restore the quality of the deltoid muscle, the most common exercise is upper limb abduction training, such as in patients with deltoid atrophy and those performing fitness exercises 5 , 6 .…”

Section: Introductionmentioning

confidence: 99%

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Effect of different loads on the shoulder in abduction postures: a finite element analysis

Zhou

Yang

et al. 2023

Sci Rep

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Load can change the mechanical environment of dynamic and static stable structures of the shoulder joint, increase the risk of tissue damage and affect the stability of the shoulder joint, but its biomechanical mechanism is still unclear. Therefore, a finite element model of the shoulder joint was constructed to analyze the mechanical index changes of shoulder joint abduction under different loads. The stress of the articular side on the supraspinatus tendon was higher than that of the capsular side, with a maximum difference of 43% due to the increased load. For the deltoid muscle and glenohumeral ligaments, increases in stress and strain were obvious in the middle and posterior deltoid muscles and inferior glenohumeral ligaments. The above results indicate that load increases the stress difference between the articular side and the capsular side on the supraspinatus tendon and increases the mechanical indices of the middle and posterior deltoid muscles, as well as the inferior glenohumeral ligament. The increased stress and strain in these specific sites can lead to tissue injury and affect the stability of the shoulder joint.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of different loads on the shoulder in abduction postures: a finite element analysis

Zhou

Yang

et al. 2023

Sci Rep

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“…The boundary conditions and mechanical load conditions of this study were based on previous studies ( Zheng et al, 2020 ; Asadi Dereshgi and Serbest, 2022 ). Loads of 0 kg (non-load condition) and 7.5 kg (load condition) were separately applied to the intercondylar center of the humerus based on the shoulder finite element model to simulate the effects of different loads on the shoulder tissues.…”

Section: Methodsmentioning

confidence: 99%

Finite element study of the biomechanical effects on the rotator cuff under load

Zhou

Yang

et al. 2023

Front. Bioeng. Biotechnol.

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Rotator cuff injuries account for 50% of shoulder disorders that can cause shoulder pain and reduced mobility. The occurrence of rotator cuff injury is related to the variation in shoulder load, but the mechanical changes in the rotator cuff caused by load remain unclear. Therefore, the mechanical results of the rotator cuff tissue during glenohumeral abduction and adduction were analyzed based on a finite element shoulder model under non-load (0 kg) and load (7.5 kg) conditions. The results showed that the maximum von Mises stress on the supraspinatus muscle was larger than that on the subscapularis, infraspinatus, and teres minor muscles during glenohumeral abduction. Compared with the non-load condition, the maximum von Mises stress on the supraspinatus muscle increased by 75% under the load condition at 30° abduction. Under the load condition, the supraspinatus joint side exhibited an average stress that was 32% greater than that observed on the bursal side. The von Mises stress on the infraspinatus muscle was higher than that in other rotator cuff tissues during adduction. The stress on the infraspinatus muscle increased by 36% in the load condition compared to the non-load condition at 30° adduction. In summary, the increased load changed the mechanical distribution of rotator cuff tissue and increased the stress differential between the joint aspect and the bursal aspect of the supraspinatus tendon.

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“…The BB muscle undergoes various mechanical changes during strengthening exercises [25]. These changes happen due to the stress [26] that the muscle is under during weight lifting [27], which causes micro-tears in the muscle fibers, which are then repaired and rebuilt stronger and bigger [28]. It is worth mentioning that investigating the mechanical behavioral changes in the BB muscle is important for maintaining muscle health and function, preventing injuries, and optimizing performance [29].…”

Section: Introductionmentioning

confidence: 99%

The Rest-Pause Biceps Curl Exercise Effect on Biceps Brachii Muscle of Women: A Study of Mechanical Responsiveness

Asadi Dereshgi

2023

IEEE Access

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The Rest-Pause Biceps Curl (RPBC) exercise generates a physiological response that enhances muscle growth and force in the Biceps Brachii (BB) through increased activation and fatigue. Specifically, the RPBC exercise leads to heightened muscle displacement and stress due to increased activation and fatigue. This stress results in muscle strain, and contracting of the muscle fibers, which causes microtrauma. The repair and adaptation process in response to this microtrauma can result in increased muscle size and force. This scrutiny purposed to explore the influence of isometric, concentric and eccentric contractions on the mechanical behavior of the BB muscle in the RPBC exercise at 2 kg, 3 kg and 5 kg dumbbell weights. In this study, ten healthy women aged 20 to 30 years, with a training background and no history of cardiovascular, neurological, or upper extremity disorders, were studied as subjects. This research was innovative in that it evaluated the collective effect of contractions on mechanical changes in BB muscle behavior during the exercise, without having physical contact with the muscle. In conclusion, the maximum displacement (37.56 μm), stress (355.89 Pa), and strain (3.06×10 -4 %) was achieved in the BB muscles as the subjects lifted 5 kg dumbbells. In addition, a linear correlation between muscle force and mechanical behavior in the muscle was observed for three different weights of the dumbbell. The results of this study evaluates muscle fatigue and recovery during exercise, providing insights into injury risk and prevention, and improves exercise technique and form. INDEX TERMSBiceps Brachii muscle force, elbow joint, joint moment, musculoskeletal model, Rest-Pause Biceps Curl exercise HAMID ASADI DERESHGI has been awarded his Ph.D. from Department of Mechatronics Engineering, Sakarya University. He has been a faculty member of the Department of Biomedical Engineering at Istanbul Arel University since 2019, where he is also the director of the Artificial Intelligence Studies, Application and Research Center (ArelMED-I). His research interests include haptics, robotics, mechatronics, biomechanics, implantable medical devices, MEMS scale energy harvesting for self-sustained electronic systems, integrated microfluidics and personalized medicine.

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A finite element model of the deltoid muscle and biomechanical analysis of the standing dumbbell fly for shoulder exercises

Cited by 5 publications

References 21 publications

Effect of different loads on the shoulder in abduction postures: a finite element analysis

Effect of different loads on the shoulder in abduction postures: a finite element analysis

Finite element study of the biomechanical effects on the rotator cuff under load

The Rest-Pause Biceps Curl Exercise Effect on Biceps Brachii Muscle of Women: A Study of Mechanical Responsiveness

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