Injuries resulting from practicing performance sports in table tennis and tennis

Mocanu, Mircea; Mereuță, Claudiu; Iordan, Daniel Andrei

doi:10.35219/efms.2020.2.02

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…The boundary of the domain V is S, and S = S σ +S u (11) where S σ and S u are the boundaries on which the stress and displacement are prescribed, respectively.…”

Section: Finite Element Methods For Human Skeletal Analysismentioning

confidence: 99%

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Stress Analysis of the Radius and Ulna in Tennis at Different Flexion Angles of the Elbow

Chen

Yin

et al. 2023

Mathematics

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In this paper, based on the finite element method, the stresses of the radius and ulna are analyzed at different flexion angles of the elbow when playing tennis. The finite element model is presented for the elbow position with flexion angles of 0°, 25°, 60°, and 80° according to the normal human arm bone. In this model, the whole arm with metacarpals, radius, ulna, humerus and scapula is considered. The calculation is simplified by setting the scapula and metacarpals as rigid bodies and using Tie binding constraints between the humerus and the radius and ulna. This model is discretized using the 10-node second-order tetrahedral element (C3D10). This model contains 109,765 nodes and 68,075 elements. The hitting forces applied to the metacarpal bone are 100 N and 300 N, respectively. The numerical results show that the highest principal stresses are at the points of 1/4 of the radius, the elbow joint, and the points of 1/10 of the ulna. The results of the maximum principal stress show that the external pressures are more pronounced as the elbow flexion angle increases and that the magnitude of the hitting force does not affect the principal stress distribution pattern. Elbow injuries to the radius can be reduced by using a stroke with less elbow flexion, and it is advisable to wear a reinforced arm cuff on the dorsal 1/4 of the hand, a radial/dorsal hand wrist, and an elbow guard to prevent radial ulnar injuries.

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“…The boundary of the domain V is S, and S = S σ +S u (11) where S σ and S u are the boundaries on which the stress and displacement are prescribed, respectively.…”

Section: Finite Element Methods For Human Skeletal Analysismentioning

confidence: 99%

“…Among chronic upper limb injuries, epicondylitis of the humerus (also known as tennis elbow) is a tendinopathy of the radial, short extensor carpi radials caused by overuse. It is the primary injury in tennis [11]. Thus, it is necessary to have a reasonable and correct understanding of the causes of injuries and illnesses [12,13].…”

Section: Introductionmentioning

confidence: 99%

Stress Analysis of the Radius and Ulna in Tennis at Different Flexion Angles of the Elbow

Chen

Yin

et al. 2023

Mathematics

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The Influence of Body Index Mass on the Leisure Types for the Students of the Faculty of Physical Education and Sports

Mocanu

Iordan

2021

Balneo and PRM Research Journal

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The study aims to investigate the ways of spending free time for a group of 180 students of the Faculty of Physical Education and Sports in Galati (years 1, 2 and 3 of cycle 1 / bachelor’s degree studies, with an average age of 22.34 ± 5.79 years.), by using a questionnaire-based survey, structured on 4 distinct factors: leisure time budget, causes limiting leisure time, favorite leisure activities and leisure sports activities. The purpose of the research is to determine the perception of students of the Faculty of Physical Education and Sports on how to spend free time and determine differences of opinion, depending on BMI / body mass index, by dividing them into 3 groups (underweight, normal weight or overweight). Results: The analysis of variance (ANOVA) indicates significant influences of the independent variable on the response values for the following items (F <.05): inaccessibility of going out with friends, stress generated by shopping, limiting free time to help others, spending free time with entourage and life partner, spending holidays in the country, etc. Socializing on the internet, physical sports activities, TV, internet and computer games, going out with friends are the preferred options for students, and reading gets low scores. The differences between groups (in most cases insignificant) however, signal that normal weight students watch TV and the Internet the least, but waste more time with commuting and household activities and have high scores when involved in most sports. Overweight people have low scores for time spent on favorite activities, are most dissatisfied with time management, work more overtime, spend less time with those around them, but prefer to spend time with their life partner or alone, have slightly better scores for reading and music auditions, get the lowest scores for involvement in most sports activities, but have high satisfaction generated by physical effort. Underweight students perceive the inaccessibility of going out with friends more strongly, are more affected by difficult homework, have a higher level of stress for reading, but perceive most other activities as less stressful, socialize more on the internet, prefer jogging and cycling / rollerblading as sports activities. Swimming is selected by all groups as indicated for optimizing health and ensuring body harmony, even if its practice is deficient, and contact / combat sports are indicated as the most risky for physical integrity. Keywords: active and passive leisure, lifestyle, physical and mental health, opinions, accessibility

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Injuries resulting from practicing performance sports in table tennis and tennis

Cited by 2 publications

References 4 publications

Stress Analysis of the Radius and Ulna in Tennis at Different Flexion Angles of the Elbow

Stress Analysis of the Radius and Ulna in Tennis at Different Flexion Angles of the Elbow

The Influence of Body Index Mass on the Leisure Types for the Students of the Faculty of Physical Education and Sports

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