A Biomechanical Assessment of Isometric Handgrip Force and Fatigue at Different Anatomical Positions

Alkurdi, Ziad D.; Dweiri, Yazan

doi:10.1123/jab.26.2.123

Cited by 27 publications

(39 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, there are no reference data for badminton players, whose values are higher than those recorded by Alkurdi and Dweiri [44] in 20 German male students (dominant = 300.9±85.1 N, non dominant = 290.3±69.2 N) using the same methodology as in the present study, and lower than those recorded by Ducher et al [45] in 52 tennis players (dominant = 602.7±155.7 N, non dominant = 521.1±128.5 N). These differences may possibly be due to the fact that badminton players use a racket which weighs 3 to 4 times less than a tennis racket (badminton ∼100 g; tennis ∼350 g) so that the grip strength needed by the badminton player to handle the racket will be less than that of the tennis player.…”

Section: Discussioncontrasting

confidence: 79%

Analysis of Dehydration and Strength in Elite Badminton Players

et al. 2012

View full text Add to dashboard Cite

BackgroundThe negative effects of dehydration on aerobic activities are well established. However, it is unknown how dehydration affects intermittent sports performance. The purpose of this study was to identify the level of dehydration in elite badminton players and its relation to muscle strength and power production.MethodologySeventy matches from the National Spanish badminton championship were analyzed (46 men’s singles and 24 women’s singles). Before and after each match, jump height and power production were determined during a countermovement jump on a force platform. Participants’ body weight and a urine sample were also obtained before and after each match. The amount of liquid that the players drank during the match was also calculated by weighing their individual drinking bottles.Results and DiscussionSweat rate during the game was 1.14±0.46 l/h in men and 1.02±0.64 l/h in women. The players rehydrated at a rate of 1.10±0.55 l/h and 1.01±0.44 l/h in the male and female groups respectively. Thus, the dehydration attained during the game was only 0.37±0.50% in men and 0.32±0.83% in women. No differences were found in any of the parameters analyzed during the vertical jump (men: from 31.82±5.29 to 32.90±4.49 W/kg; p>0.05, women: from 26.36±4.73 to 27.25±4.44 W/kg; p>0.05). Post-exercise urine samples revealed proteinuria (60.9% of cases in men and 66.7% in women), leukocyturia (men = 43.5% and women = 50.0%) and erythrocyturia (men = 50.0% and women = 21.7%).ConclusionsDespite a moderate sweat rate, badminton players adequately hydrated during a game and thus the dehydration attained was low. The badminton match did not cause muscle fatigue but it significantly increased the prevalence of proteinuria, leukocyturia and erythrocyturia.

show abstract

Section: Discussioncontrasting

confidence: 79%

Analysis of Dehydration and Strength in Elite Badminton Players

et al. 2012

View full text Add to dashboard Cite

show abstract

“…Classically, HGS is determined by limited procedures in terms of the number of repetitions (ordinarily, 1-3 repetitions), the highest recorded value of which is taken. Another proposed variant is the determination of the fatigue of the hand during isometric efforts of clamping of the dynamometer in various anatomical positions [32].…”

Section: Applications Of Poincaré Plot In the Analysis Of The Biologimentioning

confidence: 99%

Hand grip strength variability during serial testing as an entropic biomarker of aging: a Poincaré plot analysis

Iconaru

Ciucurel

2020

BMC Geriatr

View full text Add to dashboard Cite

Background: The Poincaré plot method can be used for both qualitative and quantitative assessment of selfsimilarity in usually periodic functions, hence the idea of applying it to the study of homeostasis of living organisms. From the analysis of numerous scientific data, it can be concluded that hand functionality can be correlated with the state of the human body as a biological system exposed to various forms of ontogenetic stress. Methods: We used the Poincaré plot method to analyze the variability of hand grip strength (HGS), as an entropic biomarker of aging, during 60 repetitive tests of the dominant and nondominant hand, in young and older healthy subjects. An observational cross-sectional study was performed on 80 young adults (18-22 years old, mean age 20.01 years) and 80 older people (65-69 years old, mean age 67.13 years), with a sex ratio of 1:1 for both groups. For statistical analysis, we applied univariate descriptive statistics and inferential statistics (Shapiro-Wilk test, Mann-Whitney U-test for independent large samples, with the determination of the effect size coefficient r, and simple linear regression. We calculated the effect of fatigue and the Poincaré indices SD 1 , SD 2 , SD 1 /SD 2 and the area of the fitting ellipse (AFE) for the test values of each subject. Results: The analysis of the differences between groups revealed statistically significant results for most HGSderived indices (p ≤ 0.05), and the magnitude of the differences indicated, in most situations, a large effect size (r > 0.5). Our results demonstrate that the proposed repetitive HGS testing indicates relevant differences between young and older healthy subjects. Through the mathematical modeling of data and the application of the concept of entropy, we provide arguments supporting this new design of HGS testing. Conclusions: Our results indicate that the variability of HGS during serial testing, which reflects complex repetitive biomechanical functions, represents an efficient indicator for differentiation between young and older hand function patterns from an entropic perspective. In practical terms, the variability of HGS, evaluated by the new serial testing design, can be considered an attractive and relatively simple biomarker to use for gerontological studies.

show abstract

“…Depois de verificada a normalidade de distribuição dos escores, utilizou-se análise de variância de uma entrada para verificar diferenças entre as médias de força obtidas por diferentes protocolos. Para verificar a concordância entre as medidas utilizou-se análise de concordância pelo método de Bland-Altman (BLAND; ALTMAN, 1999). O nível de significância aceito foi de p<0,05.…”

Section: Análise Estatísticaunclassified

Comparação entre diferentes protocolos de medida de força de preensão manual

Caputo¹,

Silva

Rombaldi

2014

R. Educ. Fís. UEM

View full text Add to dashboard Cite

RESUMOEstudos tem mostrado resultados conflitantes em relação as medidas de força de preensão manual por diferentes protocolos. O estudo verificou o grau de concordância entre três protocolos de mensuração da força de preensão manual em relação ao posicionamento corporal e do braço. A amostra foi composta por estudantes de Educação Física de ambos os sexos. Um dinamômetro digital foi utilizado para mensurar a força de preensão. Foram selecionados três protocolos: dois com o indivíduo na posição ortostática, com o braço estendido e com o cotovelo flexionado a 90º, e um com o indivíduo sentado com flexão do cotovelo a 90º. A distribuição dos pontos na análise de concordância mostrou boa concordância entre os protocolos testados. Concluiu-se que os resultados dos protocolos de preensão palmar avaliados apresentam bom grau de concordância devendo a escolha de utilização se dar em função da especificidade do movimento que se pretende avaliar.Palavras-chave: Dinamômetro de força muscular. Extremidade superior. Força muscular.

show abstract

A Biomechanical Assessment of Isometric Handgrip Force and Fatigue at Different Anatomical Positions

Cited by 27 publications

References 26 publications

Analysis of Dehydration and Strength in Elite Badminton Players

Analysis of Dehydration and Strength in Elite Badminton Players

Hand grip strength variability during serial testing as an entropic biomarker of aging: a Poincaré plot analysis

Comparação entre diferentes protocolos de medida de força de preensão manual

Contact Info

Product

Resources

About