scholarly journals Relationship between Inter-Limb Asymmetries and Physical Performance in Rink Hockey Players

Symmetry ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2035
Author(s):  
Jordi Arboix-Alió ◽  
Bernat Buscà ◽  
Albert Busquets ◽  
Joan Aguilera-Castells ◽  
Bernat de Pablo ◽  
...  
Keyword(s):  
Physical Performance ◽  
Significant Relationship ◽  
Body Height ◽  
Team Sports ◽  
Cross Sectional Study ◽  
Countermovement Jump ◽  
Cross Sectional ◽  
Change Of Direction ◽  
Jump Test ◽  
Hockey Players

The magnitude of inter-limb asymmetries has been reported in several studies in different team sports but only some of them have analysed their effects on sports performance. The main purpose of this cross-sectional study was to determine inter-limb asymmetries and examine their relationship with different physical performance tests in rink hockey players. Nineteen rink hockey players (age: 23.37 ± 4.82 years; body height: 1.75 ± 0.06 cm; body mass: 73.16 ± 9.87 kg) performed a mid-season battery of fitness tests consisting of 30 m sprint, countermovement jump (CMJ), and half back squat. Inter-limb asymmetries were assessed using the single leg vertical countermovement jump test (SLCJ-V), single leg horizontal countermovement jump test (SLCJ-H), and 180° change of direction test (COD). Results show a significant relationship between asymmetry in the SLCJ-H test, 30 m sprint (r = 0.63, p < 0.01) and CMJ performances (r = −0.52, p < 0.05). Additionally, asymmetry in the SLCJ-V showed a significant relationship with CMJ performance (r = −0.46, p < 0.05). These findings suggest that training programs should aim to reduce the inter-limb asymmetries in rink hockey players to improve their performance. Practitioners and coaches can use this information to assess the potential impact of asymmetries on physical performance in rink hockey players.

scholarly journals Jumping-based Asymmetries are Negatively Associated with Jump, Change of Direction, and Repeated Sprint Performance, but not Linear Speed, in Adolescent Handball Athletes

2020 ◽  
Vol 71 (1) ◽  
pp. 47-58 ◽  
Author(s):  
Marc Madruga-Parera ◽  
Chris Bishop ◽  
Paul Read ◽  
Jason Lake ◽  
Jon Brazier ◽  
...  
Keyword(s):  
Physical Performance ◽  
Body Mass ◽  
Body Height ◽  
Kappa Coefficient ◽  
Countermovement Jump ◽  
Linear Speed ◽  
Change Of Direction ◽  
Multiple Tests ◽  
Training Interventions ◽  
Repeated Sprint

AbstractThe aim of the present study was to determine the association of multi-directional jumping asymmetries with measures of physical performance. Forty-two youth handball athletes (age: 16.0 ± 1.3 years; body height: 174.11 ± 7.3 cm; body mass: 70.49 ± 13.3 kg) performed a mid-season fitness test battery consisting of single leg countermovement, lateral and broad jump tests, two change of direction speed (CODS) tests, an 8 x 10 m repeated sprint test, and a 20 m sprint. The Kappa coefficient showed only ‘slight’ levels of agreement (K range = -0.05 to 0.15), indicating that asymmetries rarely favoured the same side during each of the jump tests. The single leg countermovement jump showed significantly (p = 0.006) larger asymmetries (11.2 ± 8.4) than the broad jump (6.4 ± 4.6) and significant correlations were present between jumping asymmetries and jump (r = -0.32 to -0.52), CODS (r = 0.31 to 0.32) and repeated sprint (r = 0.35 to 0.40) performance. The findings of the present study highlight the independent nature of jumping asymmetries and associations with measures of physical performance. Practitioners are encouraged to use multiple tests to detect existing side differences and consider appropriate training interventions for the reduction of inter-limb asymmetries.

scholarly journals Examination of Construct Validity and Criterion-Related Validity of the German Motor Test in Egyptian Schoolchildren

2021 ◽  
Vol 18 (16) ◽  
pp. 8341
Author(s):  
Osama Abdelkarim ◽  
Julian Fritsch ◽  
Darko Jekauc ◽  
Klaus Bös
Keyword(s):  
Construct Validity ◽  
Physical Fitness ◽  
Large Scale ◽  
Body Height ◽  
Cross Sectional Study ◽  
Latent Factors ◽  
Cross Sectional ◽  
First Order ◽  
Motor Test ◽  
Health Related

Physical fitness is an indicator for children’s public health status. Therefore, the aim of this study was to examine the construct validity and the criterion-related validity of the German motor test (GMT) in Egyptian schoolchildren. A cross-sectional study was conducted with a total of 931 children aged 6 to 11 years (age: 9.1 ± 1.7 years) with 484 (52%) males and 447 (48%) females in grades one to five in Assiut city. The children’s physical fitness data were collected using GMT. GMT is designed to measure five health-related physical fitness components including speed, strength, coordination, endurance, and flexibility of children aged 6 to 18 years. The anthropometric data were collected based on three indicators: body height, body weight, and BMI. A confirmatory factor analysis was conducted with IBM SPSS AMOS 26.0 using full-information maximum likelihood. The results indicated an adequate fit (χ2 = 112.3, df = 20; p < 0.01; CFI = 0.956; RMSEA = 0.07). The χ2-statistic showed significant results, and the values for CFI and RMSEA showed a good fit. All loadings of the manifest variables on the first-order latent factors as well as loadings of the first-order latent factors on the second-order superordinate factor were significant. The results also showed strong construct validity in the components of conditioning abilities and moderate construct validity in the components of coordinative abilities. GMT proved to be a valid method and could be widely used on large-scale studies for health-related fitness monitoring in the Egyptian population.

scholarly journals Associations between Inter-Limb Asymmetries in Jump and Change of Direction Speed Tests and Physical Performance in Adolescent Female Soccer Players

2021 ◽  
Vol 18 (7) ◽  
pp. 3474
Author(s):  
Elena Pardos-Mainer ◽  
Chris Bishop ◽  
Oliver Gonzalo-Skok ◽  
Hadi Nobari ◽  
Jorge Pérez-Gómez ◽  
...  
Keyword(s):  
Physical Performance ◽  
Age Groups ◽  
Soccer Players ◽  
Adolescent Female ◽  
Specific Training ◽  
Countermovement Jump ◽  
Change Of Direction ◽  
Percentage Difference ◽  
Hop Test ◽  
Physical Tests

The association between asymmetries in jump and change of direction (COD) with physical performance in several sports show inconclusive results. The purposes of this study were to: (1) measure inter-limb asymmetries in three distinct groups in adolescent female soccer players and, (2) to determine the association between inter-limb asymmetries and physical performance in different age groups. Fifty-four players were distributed in three age groups: U-18, U-16 and U-14. All of them performed a series of jumps, sprints and change of direction speed tests. Asymmetries were assessed as the percentage difference between limbs, with the equation: 100/Max value (right and left) * in value (right and left) * −1 + 100. Mean inter-limb asymmetries were 2.91%, 4.82% and 11.6% for 180° COD, single leg hop and single leg countermovement jump tests respectively, but higher percentages of asymmetries were observed in many players individually. U-18 and U-16 showed significant differences on 180° left COD compared to U-14. Effect size (ES): 0.80 and 0.74, respectively; U-18 presented differences on single left leg hop test compared to U-14, ES: −0.72; U-16 also showed differences on 40 m speed compared to U-14, ES 0.87 (All p < 0.05). Jumping and COD physical tests show asymmetries in adolescent female soccer players, but these asymmetries do not interfere with physical performance. The largest asymmetry was observed in the single leg countermovement jump, and no asymmetries between groups were found. Due to the high variability in the direction of asymmetries, it is recommended to consider players’ individual asymmetries for designing specific training programs.

scholarly journals Recreational Screen Time and Anxiety among College Athletes: Findings from Shanghai

2021 ◽  
Vol 18 (14) ◽  
pp. 7470
Author(s):  
Yu Gao ◽  
Ning Fu ◽  
Yuping Mao ◽  
Lu Shi
Keyword(s):  
College Student ◽  
Screen Time ◽  
Student Athletes ◽  
College Athletes ◽  
Team Sports ◽  
Cross Sectional Study ◽  
Risk Indicator ◽  
Cross Sectional ◽  
Psychometric Scales ◽  
College Student Athletes

To better understand the behavioral factors contributing to the mental health status among student athletes, we examined the link between recreational screen time and college student athlete’s anxieties. This cross-sectional study was conducted among 278 college student athletes from Shanghai, China, aged between 17 and 25 years old (M = 19.4, SD = 1.5). Multivariate regression analyses, controlled for age, gender, rural vs. urban residency, and individual vs. team sports factors, were performed to analyze the association between their average daily recreational screen time in a week and their dispositional anxiety, pre-competition anxiety, and anxiety during competition, which were measured by the Chinese version of validated psychometric scales among athlete population. Significant results were found in both dispositional anxiety and situational anxiety in relation to recreational screen time among college athletes. Conclusions: Our findings indicate that excessive recreational screen time is a risk indicator of college student athletes’ dispositional anxiety, pre-competition anxiety, and anxiety during competition.

scholarly journals The Accuracy of Broselow Tape Weight Estimate among Pediatric Population

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Turki M. AlHarbi ◽  
Abdullaziz AlGarni ◽  
Fasial AlGamdi ◽  
Mona Jawish ◽  
Tariq Ahmad Wani ◽  
...  
Keyword(s):  
Body Weight ◽  
Pediatric Population ◽  
Body Height ◽  
Age Groups ◽  
Cross Sectional Study ◽  
The Body ◽  
Accurate Estimation ◽  
Cross Sectional ◽  
Actual Weight ◽  
Medical City

Objective.To determine the accuracy of the Broselow Tape (BT) versions 2007 and 2011 in estimating weight among pediatric population.Methods.A cross-sectional study was conducted at King Fahad Medical City and six schools across Riyadh province on 1–143-month-old children. BT 2007 and 2011 estimated weights were recorded. Both tapes via the child’s height produce an estimated weight, which was compared with the actual weight.Results.A total of 3537 children were recruited. The height (cm) of the subjects was97.7±24.1and the actual weight (kg) was16.07±8.9, whereas the estimated weight determined by BT 2007 was15.87±7.56and by BT 2011 was16.38±7.95. Across all the five age groups, correlation between actual weight and BT 2007 ranged between 0.702 and 0.788, while correlation between actual weight and BT 2011 ranged between 0.698 and 0.788. Correlation between BT 2007 and BT 2011 across all the five age groups ranged from 0.979 to 0.989. Accuracy of both the tape versions was adversely affected when age was >95 months and body weight was >26 kilograms.Conclusions.Our study showed that BT 2007 and 2011 provided accurate estimation of the body weight based on measured body height. However, 2011 version provided more precise estimate for weight.

Effects of complex strength training with elastic band program on repeated change of direction in young female handball players: Randomized control trial

2021 ◽  
pp. 174795412110621
Author(s):  
Mehrez Hammami ◽  
Nawel Gaamouri ◽  
Yosser Cherni ◽  
Sabri Gaied ◽  
Mohamed Souhaiel Chelly ◽  
...  
Keyword(s):  
Strength Training ◽  
Young Female ◽  
Control Group ◽  
Countermovement Jump ◽  
Elastic Band ◽  
Squat Jump ◽  
Change Of Direction ◽  
Jump Test ◽  
Back Extensor ◽  
Experimental Group

This study examined the effect of 10-week complex strength training with elastic band program on fitness components in young female handball players. Thirty-eight handball players aged 15.8 ± 0.2 years were randomly assigned to an experimental group or control group. The experimental group performed complex strength training with elastic band twice a week over 10 weeks, which included 8 workshops of progressing set length (number of sets) and band resistance for each specific exercise. Sessions were lasted approximately 35 min. The control group maintained regular in-season training. Tests included handgrip; back extensor; medicine ball throw; 30 m sprint times; Modified Illinois change-of-direction (Illinois-MT); four jump tests (squat jump, countermovement jump, countermovement jump with arms and five jump test; static (stork test) and dynamic (Y balance test) balance; and repeated sprint T-test. The experimental group enhanced all strength performance (handgrip right ( p < 0.001), handgrip left ( p < 0.001), back extensor strength ( p < 0.001) and medicine ball throw ( p < 0.001) compared to the controls); sprint performance (5 m ( p<0.001), 10 m ( p < 0.001), 20 m ( p < 0.001), and 30 m ( p < 0.001)); the change of direction (Illinois-MT ( p < 0.001)); jump performance (squat jump ( p < 0.001), countermovement jump ( p < 0.001), countermovement jump with arms ( p < 0.001), and five jump test ( p < 0.01)); and the repeated sprint T-test scores ( p<0.001in all scores). In contrast, no significant difference in both static and dynamic balance performance between experimental group and control group. Ten weeks of complex strength training with elastic band improve fitness components measures in young female handball players then habitual training.

scholarly journals Moral distress among nurses working in Covid-19 wards: a cross-sectional study in 2021

2021 ◽  
Author(s):  
Mina Pooresmaeil ◽  
Masoumeh Aghamohammadi
Keyword(s):  
Significant Relationship ◽  
Work Experience ◽  
Moral Distress ◽  
Pearson Correlation ◽  
Cross Sectional Study ◽  
Moderate Level ◽  
Related Factors ◽  
Cross Sectional ◽  
Experienced Nurses ◽  
Distress Scale

Abstract Background Covid-19 is an emerging disease, which has confronted nurses with new moral distress. This study aims to determine the moral distress and its related factors among nurses working in the covid-19 wards of Ardabil city in Iran. Methods This cross-sectional descriptive study evaluated 159 nurses working in the covid-19 wards of Imam Khomeini hospital -as the only hospitalization center for the patients with covid-19 in Ardabil, 2021. The instruments used included a personal-occupational information form and Corley's moral distress scale. Data analysis was performed using descriptive and inferential statistics (Pearson correlation coefficient, independent t-test and one-way analysis of variance) in SPSS v22. Results The mean and standard deviation of the frequency and intensity of the nurses' moral distress were estimated 52.28 ± 5.24 and 51.54 ± 5.86, respectively, which indicated the moderate level of moral distress in the both dimensions. The item "I hesitate to tell the patient or the patient's family about his condition and treatment" (4.74 ± 0.75) showed the most moral distress based on the intensity and the phrase "too much work reduces the quality of my work” (4.81 ± 0.55) caused the most moral distress in the frequency dimension. The results indicated a significant relationship between the intensity and frequency of moral distress with the type of nurses' employment (P < 0.05). Moreover, a significant relationship was observed between the nurses’ position and the frequency (P = 0.04), and the nurses’ work experience and the intensity of moral distress (P = 0.02). Conclusions It seems that providing the necessary training for how to deal with the moral distress in new waves of the disease and using the experiences of the experienced nurses in this field are essential due to observing the moderate level of moral distress among nurses working in covid-19 wards.

scholarly journals Postactivation potentiation improves jumps performance in children ages 6 to 8 years old

2021 ◽  
Vol 38 (3) ◽  
pp. 192-196
Author(s):  
C Gerber ◽  
P Sirieiro ◽  
I Nasser ◽  
C Taber ◽  
H Miranda
Keyword(s):  
Body Mass ◽  
Vertical Jump ◽  
Cross Sectional Study ◽  
Postactivation Potentiation ◽  
Cross Sectional ◽  
Jump Performance ◽  
Jumping Performance ◽  
Jump Test ◽  
Low Load ◽  
Vertical Jumps

Introduction: The aim of the present study was to investigate the effects of postactivation potentiation (PAP) in vertical and horizontal jump performance in pre-pubertal children. Material and method: One hundred and nineteen children (65 girls and 54 boys; 6.8 ± 0.7 years old; 124.5 ± 6.4 cm; 25.2 ± 5.1 kg) participated in this study. This was a transversal cross-sectional study which incorporated a within-subjects repeatedmeasures design, where participants completed all protocols. The experimental procedure required four total testing, separated by one week, using a counterbalanced. This study investigated jumping performance associated with weighted jumps, lowload vertical jumps, and horizontal jumps. During two sessions the participants performed vertical jumps with and without PAP, the other two sessions the same procedures were performed for horizontal jumps. The PAP protocol consisted of one set of five weighted countermovement jumps with low-load (10% of body mass) and a rest interval of four minutes prior to the jump tests. Paired t-tests were used between conditions (PAP and control) in the vertical jump and horizontal jump test. In addition, Cohen’s d effect size and 95% confidence interval was used. Results: Significant jump height was observed in the vertical jump in the PAP condition compared to the control condition (p = 0.007). Similar results were observed for the horizontal jump tests, with significant longer distance observed in the PAP condition (p = 0.036). Conclusions: Pre-pubertal children can benefit from the effects of PAP in vertical and horizontal jumping performance when preceded by low-load ballistic movements. A protocol implementing low-loads, determined by a relative percentage of body mass is effective to promote PAP for young children.

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