scholarly journals Effect of using Weighted Balls on Performance Speed in Wheelchair Basketball Players

2021 ◽  
Vol 61 (2) ◽  
pp. 249-257
Author(s):  
Benzidane Houcine ◽  
Menad Fodil ◽  
Ahmed Benklaouz Touati

Summary The researchers seek to identify the impact of weighted balls on performance speed in wheelchair basketball players. An experimental method has been used in conformity with research nature between pre-tests and post-tests sample. The sample was selected by the intended manner and divided into two equal groups (10 players experimental sample, 10 players control sample) for the 2019/2020 sports season. A speed test (5 m and 20 m without ball), speed test (5 m and 20 m with ball) were used. After statistical treatment of the results, the researchers concluded: The weighted balls are important to develop performance speed in wheelchair basketball players, and the best improvement of the experimental group based on of weighted balls is marked comparing to the control group. A regular physical training with weighted balls is very important to improve of performance speed of persons with disabilities in basketball game.

Author(s):  
Daniel Light ◽  
Nelia Matinhure-Muzondo ◽  
Camille Ferguson ◽  
Tamuka Huston Muzondo ◽  
Nennie Harvey Lungu

Abstract The Girl Talk initiative, a collaboration of Sesame Workshop, World Vision International and World Vision Zimbabwe, is an innovative project to address gaps in pubertal health and menstrual hygiene education among pre-adolescent and adolescent girls and boys in rural Zimbabwe. Girl Talk uses short animated videos, with accompanying print materials, that use stories about a Zimbabwean school girl, Didi, and her female and male friends growing up and helping each other deal with the challenges they face as they enter puberty. Girl Talk materials are all in the local language, Shona, and are designed to foster conversations among the students and teachers about the experiences of puberty and menstruation that are based on science. The Education Development Center (EDC) and the Zimbabwean firm, NGO Consultancy Africa, were contracted by Sesame Workshop to evaluate of Girl Talk. Using a quasi-experimental control-group design with repeated measures to assess the impact of Girl Talk on participating students, the research found a significant impact on participating students’ knowledge about puberty and menstruation compared with the control sample.


2019 ◽  
pp. 378-387
Author(s):  
Paul E. Yeatts ◽  
Ronald Davis ◽  
Jun Oh ◽  
Gwang-Yon Hwang

Participation in physical activity has been shown to improve components of psychological well-being (i.e., affect). Programs such as the Warrior Games have been designed to promote physical activity in wounded military personnel. However, sport competition typically yields a winner and a loser (i.e., game outcome). The experience of a win or a loss may affect how wounded athletes respond to game outcome. Therefore, the purpose of this study was to investigate the affective changes (positive affect, negative affect, tranquility, and fatigue) according to game outcome in a sample of wounded military wheelchair basketball players participating in a weekend tournament. The results indicated that the participants who experienced a win reported significantly higher positive affect and tranquility and significantly lower negative affect than those experiencing a loss. These findings have important implications for wounded veteran athletes, as well as coaches and administrative personnel.


2007 ◽  
Vol 191 (S51) ◽  
pp. s128-s132 ◽  
Author(s):  
Tor K. Larsen ◽  
Ingrid Melle ◽  
Svein Friss ◽  
Inge Joa ◽  
Jan Olav Johannessen ◽  
...  

BackgroundThere is highly replicated positive correlation between longer duration of untreated psychosis and poorer outcomeAimsTo study the effect of early intervention in first psychosis on one-year outcome using an historical quasi-experimental designMethodWe compare the outcome of two samples of first-episode psychosis from the same healthcare district at different time periods. The historical control sample was assessed during 19931994, before the establishment of a system for early detection of psychosis. The experimental sample is the early detection sample in the Early Treatment and Intervention in Psychosis study assessed during 1997–2000ResultsAt 1-year follow-up, the early detection group was younger, had a smaller fraction of individuals with schizophrenia, had less severe negative and general symptoms and had more friends in the past year than the historical control group. No differences were found in clinical course (remission, relapse, continuously psychotic) or positive symptoms, but more patients in the early detection sample were treated as outpatients without hospitalisationConclusionsEarly detection of schizophrenia in one healthcare sector is associated with less severe deterioration at 1 year


Author(s):  
Irene Sánchez ◽  
Jose Enrique de la Rubia Ortí ◽  
Jose Luis Platero ◽  
Gonzalo Mariscal ◽  
Carlos Barrios

Elite basketball training causes high levels of physiological stress, which can lead to negative physiological disorders in female athletes. The aim of this study was to establish the impact of physical activity on the rhythm of salivary cortisol secretion in elite female basketball players over one week. The population sample included 9 women professional basketball players. The control group was made up of 9 women who did not do any exercise. Saliva samples were collected from all participants at 9:00 a.m. and 11:00 p.m. on training days. Samples from the basketball group showed a significantly higher cortisol secretion. Moreover, from the second night, the pattern of cortisol secretion of these players was reversed, showing higher levels of cortisol in saliva at night than in the morning. The results suggest that the secretion rhythm changed over the course of the week and according to competitive demands.


Sports ◽  
2019 ◽  
Vol 7 (8) ◽  
pp. 180 ◽  
Author(s):  
Saleky García-Gómez ◽  
Javier Pérez-Tejero ◽  
Marco Hoozemans ◽  
Rubén Barakat

The aim of the present study was to assess the effects of a 10 week shoulder home based exercise program (SHEP) on shoulder pain (SP) and range of motion (ROM) in a group of elite wheelchair basketball (WB) players. A convenience sample of elite WB players (n = 36, 15 males and 21 females), mean age of 26 years (SD 7.6, range 15–45)) were assigned to either an exercise or a control group, according to the use of the wheelchair during daily activities. The shoulder pain index for wheelchair basketball players (SPI-WB), functional tests and ROM were measured at baseline and after a 10 week intervention. In the analysis of the SPI-WB scores, for the exercise and control groups separately, there were no significant reductions of SPI-WB scores after intervention. Related to the analysis between groups after 10 weeks of intervention, there were no significant differences in changes between the exercise and control groups (Z = 0.840, p > 0.05, r = 0.743). In this regard, there was a significant change after the intervention for shoulder extension ROM (Z = 2.81, p ≤ 0.05, r = 0.249). Shoulder Pain did not increase along the 10 weeks of the SHEP development in WB players who reported SP before the intervention program. However, in those players who started the intervention without SP, as no increase in SP was observed and players were free of injury. An exercise program could be a tool to maintain shoulder health and prevent injuries in elite WB players.


2021 ◽  
Author(s):  
Jinglei He ◽  
Lingzelai Kong ◽  
Jinqiu Yu ◽  
Bing Li ◽  
Xiangyin Hou ◽  
...  

Abstract Background Light and temperature are among the most important factors in plant growth. The annual forage variety common vetch was grown under the special environment of high light intensity and low temperature on the Qinghai-Tibet Plateau. In the seedling stage, the Qinghai-Tibet Plateau adapted variety common vetch was airlifted to the inland plain. Its response to the plain environment and its regulatory mechanism are not clear. Results The samples collected the day before transportation were used as a control. After being transported back to the plain, the morphological structure and physiological indexes were determined on days one, three, five and seven. Compared with the control group, the chlorophyll content in the experimental group changed significantly. Chlorophyll fluorescence increased significantly on the fifth day. The number of stomatal openings decreased significantly on the first day and then increased gradually and exceeded that of the control. Compared with the control sample, the intercellular space of the experimental sample was larger and then did not return to the control level. The physiological indexes gradually returned to the control level on the 7th day. Transcriptome analysis showed that 3251 genes were upregulated and 3317 genes were downregulated on the third day, while 1359 genes were upregulated and 1648 genes were downregulated on the seventh day. These differentially expressed genes were significantly enriched in photosynthesis, photosynthetic antenna protein synthesis, carbon dioxide fixation and chlorophyll synthesis pathways, and almost all of the genes involved in these pathways were downregulated. In addition, MYB, NAC, AP2-EREBP and the Orphans family of transcription factors (TFs) regulating the light response were more abundant on day 3 and day 7 than in the control group. Conclusion The physiological and gene expression levels of common vetch transported to the plain environment were analyzed. To reveal the adaptation mechanism of common vetch to plain environments, the key metabolic pathways of differential gene enrichment were analyzed. These findings are helpful for introducing plateau suitable varieties into plain environments.


2020 ◽  
Vol 4 (1) ◽  
pp. 25-34
Author(s):  
Ramadhany Hananto Puriana ◽  
Riga Mardhika

This study to analyze the impact of  the reactive agility sprint mirror drill exercise in the increasing the speed.. This research was done at UNIPA Surabaya by using a sample of soccer athletes in Unipa Surabaya by using the original pairing technique in determining the sample group. This type of quantitative research is the type of research that is suitable for testing the speed of reactive agility sprint mirror drill training by applying the quasi experimental design method. To measure the speed was taken by using the 30 m sprint test. The results of this study indicate that the Reactive Agility Sprint Mirror Drill training has a significant effect on speed, as indicated by the results of the normality test using the Kolmogorov Smirnov test pre and post velocity p = 0.723 (p> 0.05) and p = 0.166 (p> 0.05). ) and the homogeneity test used the Leavenes Test with the results of pre p = 0.131 (p> 0.05) and post p 0.146 (p> 0.05), while to determine the results of the T-test used paired sample test with dependent variables in the experimental group with numbers significance p = 0.003 (p <0.05), in other words it has an increase in effect, meaning that there is a significant effect, while the T-test results of the dependent variable in the control group obtained a significance number of p = 0.000 (p <0.05), the conclusion is increase effect.   Kata Kunci: sepak bola, kecepatan, Reactive Agility Sprint Mirror Drill


2021 ◽  
Vol 32 (4) ◽  
pp. 163-199
Author(s):  
Rasha Aeada Khalaf

The study aimed to identify the impact of the flexibility and clarification strategies on achievement and improvement of linguistic intelligence skills and attitudes towards the Arabic language subject among vocational education students in Iraq. The study adopted the semi-experimental approach, through application on two experimental and control groups of vocational education students in Iraq. The researcher selected two divisions of vocational education students in Iraq: (30) students in the experimental group and (30) students in the control group, so that the educational program was applied to the experimental group, and the control group was taught in the usual way. The educational program, the linguistic intelligence test, and the achievement test were used, and after performing the statistical treatment, the study reached the following results: There are no statistically significant differences at the level of (0.05) in the degree of achievement attributable to the student's gender, where the value of (P) is (1.43), which is not significant. Statistically, there are no statistically significant differences at the level of (0.05) in the degree of achievement due to the interaction between the group and the sex of the student, as the value of (P) reached (2.98) and it is not statistically significant, there are no statistically significant differences at the level of (0.05) In the degree of total linguistic intelligence attributable to the sex of the student, where the value of (P) was (7.09), which is not statistically significant, and there are no statistically significant differences at the level of (0.05) in the degree of total linguistic intelligence due to the interaction between the group and the student’s sex, where the value reached (P) (2.93) which is not statistically significant. The study recommended the importance of focusing in the classroom on basic skills in reading and writing, given that these skills have a great role in providing them with the necessary skills that will help them in the future in mastering the skills of reading and writing, and the focus of Arabic language curricula - specifically the lower basic stage - on investigation and storming skills. The teacher’s guide included some examples of study plans implemented through investigation and others through brainstorming.


2016 ◽  
Vol 11 (5) ◽  
pp. 563-573 ◽  
Author(s):  
Abbas Asadi ◽  
Hamid Arazi ◽  
Warren B. Young ◽  
Eduardo Sáez de Villarreal

Purpose:To show a clear picture about the possible variables of enhancements of change-of-direction (COD) ability using longitudinal plyometric-training (PT) studies and determine specific factors that influence the training effects.Methods:A computerized search was performed, and 24 articles with a total of 46 effect sizes (ESs) in an experimental group and 25 ESs in a control group were reviewed to analyze the role of various factors on the impact of PT on COD performance.Results:The results showed that participants with good fitness levels obtained greater improvements in COD performance (P < .05), and basketball players gained more benefits of PT than other athletes. Also, men obtained COD results similar to those of women after PT. In relation to the variables of PT design, it appears that 7 wk (with 2 sessions/wk) using moderate intensity and 100 jumps per training session with a 72-h rest interval tends to improve COD ability. Performing PT with a combination of different types of plyometric exercises such as drop jumps + vertical jumps + standing long jumps is better than 1 form of exercise.Conclusion:It is apparent that PT can be effective at improving COD ability. The loading parameters are essential for exercise professionals, coaches, and strength and conditioning professionals with regard to the most appropriate dose-response trends to optimize plyometric-induced COD-ability gains.


2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Elena Bergamini ◽  
Francesca Morelli ◽  
Flavia Marchetti ◽  
Giuseppe Vannozzi ◽  
Lorenzo Polidori ◽  
...  

As participation in wheelchair sports increases, the need of quantitative assessment of biomechanical performance indicators and of sports- and population-specific training protocols has become central. The present study focuses on junior wheelchair basketball and aims at (i) proposing a method to identify biomechanical performance indicators of wheelchair propulsion using an instrumented in-field test and (ii) developing a training program specific for the considered population and assessing its efficacy using the proposed method. Twelve athletes (10 M, 2 F, age = 17.1 ± 2.7 years, years of practice = 4.5 ± 1.8) equipped with wheelchair- and wrist-mounted inertial sensors performed a 20-metre sprint test. Biomechanical parameters related to propulsion timing, progression force, and coordination were estimated from the measured accelerations and used in a regression model where the time to complete the test was set as dependent variable. Force- and coordination-related parameters accounted for 80% of the dependent variable variance. Based on these results, a training program was designed and administered for three months to six of the athletes (the others acting as control group). The biomechanical indicators proved to be effective in providing additional information about the wheelchair propulsion technique with respect to the final test outcome and demonstrated the efficacy of the developed program.


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