scholarly journals Força de preensão de mão e flexibilidade em atletas masculinos de judô e jiu-jitsu: um estudo transversal

2019 ◽  
Vol 88 (1) ◽  
Author(s):  
Yan Sobral Campos ◽  
Ítalo Sergio Lopes Campos ◽  
Amauri Gouveia
Keyword(s):  
Grip Strength ◽  
Body Mass ◽  
Combat Sports ◽  
Cross Sectional ◽  
Male Athletes ◽  
Hand Grip ◽  
Significant Difference ◽  
Motor Tests ◽  
Motor Actions ◽  
One Way Anova

Introdução: Esportes de combate de domínio como o judô e o jiu-jitsu apresentam algumas características comuns entre si. Entre elas, a manutenção de pequena distância entre os oponentes para executar a dinâmica da luta e a exigência de ações motoras específicas para a execução de movimentos de agarrar, empurrar e imobilizar em curto espaço.Objetivo: Comparar a força de preensão manual e a flexibilidade de atletas de judô e de jiu-jitsu com vista a identificar possíveis diferenças neuromusculares em tais modalidades.Métodos: Estudo transversal e observacional, em que foram avaliados 33 atletas do sexo masculino, com idades variando entre 18 e 30 anos, recrutados por conveniência e divididos em dois grupos segundo modalidade esportiva judô (JD) e jiu-jitsu (JJ). Os atletas foram submetidos à medidas antropométricas de massa corporal, estatura e Índice de Massa Corporal (IMC) e testes motores de força de preensão manual (FPM) e flexibilidade. A comparação entre os grupos foi realizada através de ANOVA de uma via para cada quesito (p<0,05).Resultados: Os grupos apresentaram valores muito próximos, com valores mais elevados tanto para o IMC como para a FPM em atletas de JD e da flexibilidade em atletas de JJ. A análise estatística demonstrou que existe uma diferença significativa apenas para o item flexibilidade.Conclusão: A FPM não diferiu significativamente entre atletas de JD e JJ. Quanto à flexibilidade, atletas de JJ apresentam valores estatisticamente superiores aos atletas de JD. Os resultados foram discutidos.Hand Grip Strength and Flexibility in Male Judo and Jiu-Jitsu AthletesIntroduction: Combat sports involving dominating the opponent, such as judo and jiu-jitsu, have some characteristics common to them. Among them, the maintenance of small distance between opponents to perform the dynamics of the fight and the requirement of specific motor actions to perform movements to grab, push and immobilize in short time.Objective: To compare the manual grip strength and flexibility of judo and jiu-jitsu athletes in order to identify possible neuromuscular differences in such modalities.Methods: A cross-sectional and observational study was carried out in which 33 male athletes, ranging from 18 to 30 years old, were recruited for convenience and divided into two groups according to judo and Jiu-jitsu. The athletes were submitted to anthropometric measurements of body mass, height and Body Mass Index (BMI) and hand grip strength (HGS) motor tests and flexibility. The comparison between the groups was performed by one-way ANOVA for each item (p<0.05).Results: The groups presented values very close, with higher values for both BMI and HGS in JD athletes and flexibility in JJ athletes. Statistical analysis demonstrated that there is a significant difference only for the item flexibility.Conclusion: HGS did not differ significantly between JD and JJ athletes. As for flexibility, JJ athletes present values statistically superior to JD athletes. The results were discussed.

scholarly journals THE CORRELATION OF HAND GRIP STRENGHT WITH FOREARM AND HAND ANTHROPOMETRY AND BODY MASS INDEX

2021 ◽  
Vol 18 (1) ◽  
pp. 1-7
Author(s):  
Heidy Heidy ◽  
Tena Djuartina ◽  
Robi Irawan
Keyword(s):  
Body Mass Index ◽  
Grip Strength ◽  
Body Mass ◽  
Cross Sectional Study ◽  
Hand Grip Strength ◽  
Dominant Hand ◽  
Cross Sectional ◽  
Power Grip ◽  
Hand Grip ◽  
Hand Length

Introduction: An individual’s overall muscle strength is commonly assessed by a power grip measurement, a reliable indicator of functional capacity and physical condition. The development of muscle parallels the changes of body composition during growth. Aim of this study is to examine the correlationship between hand grip strength and anthropometric. Methods: This cross-sectional study involved 76 male students of Dhammasavana School, aged between 12 – 16 years old, North Jakarta. Hand grip strength was examined using a digital dynamometer on the dominant side. Statistical analysis was computed using SPSS ver. 15.0 program with Spearman correlations test. Significance was set at p<0.05. Results: Dominant hand grip strength was found to have significant (p<0.05 - 0.001) positive correlation with height (r=0.612), lower arm muscle-and-bone cross-sectional circumference and area (CSA) (r=0.553 and r=0.553 respectively), hand length (r=0.548), forearm length (r=0.540), age (r=0.520), weight (r=0.416), and forearm girth (r=0.376). Conclusion: No significant correlation between grip strength and body mass index was found. Positive correlations between the variables mentioned above conclude that the higher the value of the anthropometric measurements, the greater the strength generated in a power grip.

scholarly journals Influence of low, medium and high BMI on hand grip strength among community dwelling elderly population

2021 ◽  
Vol 3 (2) ◽  
pp. 78-82
Author(s):  
Bhakti Gorhe ◽  
Dr. Shyam Ganvir(PT)
Keyword(s):  
Body Mass Index ◽  
Grip Strength ◽  
Body Mass ◽  
Elderly Population ◽  
Pearson Correlation ◽  
Hand Grip Strength ◽  
Community Dwelling ◽  
Hand Grip ◽  
One Way Anova ◽  
High Bmi

ABSTRACT: - Aim of the study is to find out the influence of low, medium and high body mass index on hand grip strength among community dwelling elderly population. Methodology: - This was an observational cross-sectional study performed on 30 community dwelling elderly population with age groups 60 and above 60. Out of total 30 participants 8 were having low BMI, 9 were having medium BMI and 13 were having high BMI. BMI was calculated by taking weight (in kg) by using weighing machine and height in (meters). Hand grip strength was measured by using hand held (JAMER) dynamometer. Result: - Data has summarized by using descriptive statistic of mean and standard deviation. Then Pearson correlation test was used to measure relation between hand grip strength and BMI.ANOVA technique was used for multiple group comparison by using graph pad software. By using Pearson corelation we got the result that there is positive corelation between High BMI with HGS and negative corelation between HGS with low and medium BMI. By using one-way ANOVA test we got (p value>0.05) which is non-significant. One way ANOVA shows comparison of hand grip strength of low, medium and high BMI and it is like H>M>L for both dominant and non-dominant. CONCLUSION: - Our study concludes from the above result that there is corelation between Hand grip strength and body mass index.

scholarly journals Diet preference with regional variation of body mass index and hand grip strength of Indian females

2013 ◽  
Vol 4 (3) ◽  
pp. 43-51 ◽  
Author(s):  
Lalhmunlien Robert Varte ◽  
Shweta Rawat ◽  
Inderjeet Singh ◽  
Madhu Sudan Pal ◽  
Dhurjati Majumdar
Keyword(s):  
Body Composition ◽  
Grip Strength ◽  
Body Mass ◽  
Food Composition ◽  
Hand Grip Strength ◽  
T Test ◽  
Fat Free Mass ◽  
Hand Grip ◽  
Significant Difference ◽  
Composition Structure

Introduction: Nutritional content of diet of vegetarian and non-vegetarian differs in terms of food composition and vegetarian diets are often low in protein, probably causing a difference in body composition, structure and strength characteristics. Purpose of study: To study anthropometric, body composition and hand strength differences among 641 vegetarian and 424 non-vegetarian Indian women, aged 20–60 yrs. Methods: ANOVA, t-test, multivariable stepwise regression and logistic regressions were performed to analyse association between BMI, hand grip strength and potential confounders using SPSS Version 17 for Windows. p < 0.05 referred to as statistically significant. Results: Vegetarians had less body fat than non-vegetarians. Statistically significant difference was found in their grip strength (GS) (t = 2.459, p < 0.05) and BMI (t = 2.188, p < 0.05). Height and weight were positively associated with grip strength in the vegetarian group while height and fat free mass were seen to be positively associated with grip strength in the non-vegetarian group. Grip strength was greater in non-vegetarian group and the vegetarians had lower BMI (25.33 kg/mt2 ± 4.56) than nonvegetarians (25.95 kg/mt2 ± 4.45, t-test = 2.188, p<0.05). Conclusion: Those with greater grip strength (non-vegetarian group) had greater chance of being obese than those with lower grip strength (vegetarian group). (OR = 2.609, 95% CI 1.487 - 4.577). However, lower levels of body mass indices of the vegetarian women suggest that they are healthier than non-vegetarians in terms of BMI.  DOI: http://dx.doi.org/10.3126/ajms.v4i3.8096   Asian Journal of Medical Sciences 4(2013) 43-51

scholarly journals Effects of Head-Neck Positions on the Hand Grip Strength in Healthy Young Adults: A Cross-Sectional Study

2018 ◽  
Vol 2018 ◽  
pp. 1-5 ◽  
Author(s):  
Hamayun Zafar ◽  
Ahmad Alghadir ◽  
Shahnawaz Anwer
Keyword(s):  
Young Adults ◽  
Grip Strength ◽  
Cross Sectional Study ◽  
Hand Grip Strength ◽  
Neutral Position ◽  
Cross Sectional ◽  
Hand Grip ◽  
Significant Difference ◽  
Left And Right ◽  
Head Neck

Background.Assessment of hand grip strength is vital for the evaluation of upper limb impairments and effective exercise prescription. Present study primarily aimed to investigate the effect of head-neck positions on the hand grip strength in healthy young adults. Secondarily, the present study compared hand grip strength between left versus right hand in different head-neck positions.Methods.Healthy young adults (age 19 – 30 year; n = 40) participated in this cross-sectional study. Hand grip strength was assessed in three head-neck positions (neutral, rotation left, and rotation right) using the standard adjustable Jamar hand dynamometer.Results. Hand grip strength in both sides (left and right) was greatest in the head-neck neutral position. Hand grip strength measured in head-neck left rotation position displayed the least strength in both sides. There was no significant difference noted between left and right side hand grip strength measured in head-neck neutral and right rotation positions. However, there was a significant difference noted between left and right side hand grip strength measured in head-neck left rotation positions. There was no significant effect of head-neck positions on hand grip strength noted in both sides.Conclusions. Hand grip strength was highest in the head-neck neutral position followed by head-neck rotation to the right. However, head-neck positions did not significantly affect hand grip strength in healthy young adults. Further studies assessing the hand grip strength in different neck positions in patients with neck pain and upper limb dysfunction may have significant implications for the assessment of hand grip strength.

scholarly journals Hand grip strength in healthy young and older Brazilian adults:

Kinesiology ◽  
2017 ◽  
Vol 49 (2) ◽  
pp. 208-216 ◽  
Author(s):  
Rafael Santos Neves ◽  
Agnaldo José Lopes
Keyword(s):  
Grip Strength ◽  
Body Mass ◽  
Prediction Models ◽  
Statistical Significance ◽  
Body Height ◽  
Hand Grip Strength ◽  
Cross Sectional ◽  
Body Side ◽  
Hand Grip ◽  
Stepwise Method

Hand grip strength (HGS) is important not only in its own right, but as an indicator of overall body strength and future outcomes as well. As we have found no studies on the HGS predictive models including Brazilian adults younger than 50 years of age, we aimed to develop a novel predictive equation using demographic and anthropometric attributes for subjects aged between 18 and 71 years. This is a cross-sectional study in which 203 (105 women) apparently healthy young and older adults were evaluated. A hydraulic dynamometer was&nbsp;used to measure HGS, according to the American Society of Hand Therapists recommendations. Several models were tested using age, body mass (W), body height (H), body mass index (BMI), level of physical activity (IPAQ) and gender as explanatory variables. Automated variable selection using the forward stepwise method was applied. The overall performance measures of the regression consisted of the R2 value adjusted for the number of variables retained in the proposed model, as well as of the standard error of the difference. Regression’s diagnosis using Pearson’s correlation coefficient, multicollinearity assessment and analysis of residuals were also performed to verify specific performance of the model. Statistical significance was considered at p&lt;.05 for all analyses. Regarding the dominant (D) body side, the adjusted R2 value obtained by the stepwise method was .683. The variables age and IPAQ classification did not significantly increase the adjusted R2 value and therefore were excluded from the model (p&gt;.100). For the non-dominant body side (ND), the adjusted R2 was .640. The final prediction models for the dominant body side was HGSPD=20.108×H+0.083×W+13.265×sexmale=1−8.737, whereas for the non-dominant body side it was HGSPND= 9.23×H+0.086×W+14.671×sexmale=1+5.904. Simple personal attributes, such as gender, body height and body mass can predict the expected values of HGS of the dominant and non-dominant upper limbs for Brazilian adults between 18 and 71 years.

scholarly journals BODY MASS INDEX, PROTEIN INTAKE AND HAND GRIP STRENGTH AMONG YOUTH

2020 ◽  
Vol 7 (4) ◽  
pp. 166
Author(s):  
Anna Fitriani ◽  
Desiani Rizki Purwaningtyas
Keyword(s):  
Body Mass Index ◽  
Muscle Strength ◽  
Grip Strength ◽  
Body Mass ◽  
Protein Intake ◽  
Hand Grip Strength ◽  
Female College Student ◽  
P Value ◽  
Hand Grip ◽  
Significant Difference

Hand Grip Strength (HGS) is an indicator of muscle strength tha has been a predictor of physical capacity and long-term health. There has been a a decrease in HGS among youth and is related with several factors such us body mass index (BMI) and protein intake, but the available researches are still inconsistent. This cross sectional study examined the level of HGS and it’s relationship with BMI and protein intake among female college student of UHAMKA Jakarta. HGS were measured by Smedley Dynamometer and were carried out according to the Southampton Protocol. Anthropometric measurements and self 3-day food records were performed to obtain BMI and total protein intake. Chi square test was performed to reveal the difference proportion of low HGS among various groups. The results showed that the average HGS score was 21.70 ± 7.09 kg, of which 48.7% of respondents were classified as low HGS. There was no significant difference of low HGS proportion between normal BMI and abnormal BMI (less and more) (P value = 0.481). However, the proportion of low HGS was significantly higher among those who had deficit protein intake compared to normal (P value = 0,000). Therefore, an adequate protein intake is needed to maintain muscle strength among youth.   Keywords: Muscle strength, hand grip strength, BMI, protein intake, youth

Rapid Weight Loss Practices in Elite Kickboxers

2019 ◽  
Vol 29 (6) ◽  
pp. 583-588 ◽  
Author(s):  
Boris Dugonjić ◽  
Saša Krstulović ◽  
Goran Kuvačić
Keyword(s):  
Weight Loss ◽  
Body Weight ◽  
Weight Management ◽  
Body Mass ◽  
Rapid Weight Loss ◽  
Combat Sports ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Significant Difference ◽  
Management Behaviors

The aim of this observational cross-sectional survey was to determine the prevalence of rapid weight loss (RWL) in elite kickboxers. Kickboxers (61 males; age = 24.2 ± 4.6 years, weight = 73.9 ± 12.8 kg, and height = 179.2 ± 7.9 cm) from eight European countries completed a Rapid Weight Loss Questionnaire regarding prevalence, magnitude, and methods of RWL. All athletes (100%) were practicing RWL before the competition with a Rapid Weight Loss Questionnaire score of 52.4 ±12.9. Most kickboxers ‘usually lose between 2% and 5% of their body mass, whereas ∼30% lose between 6% and 8%. However, it is alarming that almost 30% reported cutting 10% of body weight or more sometime during their kickboxing career. Almost half of the athletes always practice gradual dieting (45.9%) and increased exercising (44.3%) to reduce body mass. Kickboxers usually reduce weight three to four times during a year, usually 7–15 days before a competition. More than a third (34.4%) started with RWL practice under the age of 17. There was no significant difference between weight divisions in weight management behaviors (p = .5, F = 0.6; η2 = .0) and no relation between the main characteristics of elite kickboxing athletes and the total RWL score. In conclusion, RWL practices in kickboxing athletes are somewhat specific and different when compared with other combat sports, which can be explained by greater number of weight classes and specific weigh-in protocol.

scholarly journals Relationship of Body Mass Index and Physical Activity with Hand Grip Status Among University Students: A Cross Sectional Analysis

2020 ◽  
Vol 4 (2) ◽  
pp. 30-38
Author(s):  
Sakinah Harith ◽  
Nik Noor Sabiha Nik Mohd Zaib ◽  
Asheila Meramat
Keyword(s):  
Physical Activity ◽  
Body Mass Index ◽  
University Students ◽  
Grip Strength ◽  
Body Mass ◽  
Eating Habits ◽  
Hand Grip Strength ◽  
Overweight And Obesity ◽  
Cross Sectional ◽  
Hand Grip

The objective of this study is to determine the relationship between nutritional status and hand grip strength among university students in Kuala Nerus and assess the relationships between BMI and physical activity with hand grip among students. University students (N = 80, mean age 21.8 ± 1.4 years) that included 36 males and 44 females were recruited using a convenient sampling technique from two universities which is Universiti Sultan Zainal Abidin (UniSZA) and Universiti Malaysia Terengganu (UMT) in a cross sectional study in  Kuala Nerus, Terengganu. Weight and height were measured and body mass index were calculated. Hand grip strength was measured too using Takei Digital Grip Strength Dynamometer. Furthermore, eating habits and level of physical activity were self-reported by the students using FFQ adopted from MANS and IPAQ questionnaire. The prevalence of underweight, normal weight, overweight and obesity were 7.4%, 66.3%, 17.5%, and 8.8% respectively. Male have slightly higher intake of calories, carbohydrates and fat with mean value of 2229 kcal, 295.3 g and 66.8 g respectively compared to female with calories of 2126 kcal, carbohydrates of 283 g and fat of 64.2 g. Meanwhile, most of the students involved in this study were classified as being moderately active (65%) followed by low physical activity (28.8%) and the least goes to the high physical activity category (6.2%). Furthermore, male subjects had a higher value of handgrip strength in both right (32.3 kg) and left hand (28.2 kg) as compared to female subjects that was 20.0 kg on the right hand while 17.6 kg on the left hand. The present study also showed that males had a higher percentage of overweight and obesity than females and there was a significant association between body mass index and gender as well as gender and hand grip strength (p<0.05). There were also significant association observed between BMI and physical activity with hand grip strength meanwhile, there is no association between dietary intakes (protein) with grip strength (p<0.05).  Keywords: eating habits, hand grip strength, BMI, physical activity

scholarly journals RELEVANCE OF VO2max CONSUMPTION IN ELITE BULGARIAN TAEKWONDO COMPETITORS

2021 ◽  
Vol 2 (2021) ◽  
pp. 28-39
Author(s):  
Dimitar Avramov ◽  
Keyword(s):  
Heart Rate ◽  
Aerobic Fitness ◽  
Treadmill Test ◽  
Male Athletes ◽  
Weight Category ◽  
National Team ◽  
Significant Difference ◽  
The One ◽  
Male Subjects ◽  
One Way Anova

The aim of this study was to determine aerobic fitness through the VO2max treadmill test of elite Bulgarian taekwondo players with international results, and to determine whether the aerobic system had an effect upon the sports result in taekwondo. Fourteen elite taekwondo athletes, members of the Bulgarian national team (8 male and 6 female) were tested using a continuous progressive treadmill test. Physiological characteristics such as maximal oxygen uptake(VO2max), blood lactate and heart rate were measured. The male athletes recorded 58.2±3.4 ml kg–1 min–1 and the female 46.0±2.8 ml kg–1 min–1. The lactate level reached its highest at the 6’ after the VO2max with results for the males of 11.5±3.7 (mmol l-1) and 9.9±4.1 (mmol l-1) for the females respectively. A comparison between our results, regarding VO2max and previously reported was made using the One-way Anova for independent samples. It showed no significant difference between the male subjects (58.2±3.4 versus 60.7±3.3 ml kg(-1) min(-1), p>.05) and significant difference between the female ones (46.0±2.8 versus 49.8±2.8 ml kg(-1) min(-1), p<.05). Investigated also was the number of kicks executed by the winner of -49 kg weight category and her direct opponents during the 2019 Grand Prix Sofia. It was discovered that the winner kicked an average of 86.25 times per match and her kicks during the Grand Prix Sofia accumulated to 390 in total. It is our conclusion that the aerobic fitness does not play a significant role in taekwondo.

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