scholarly journals Análisis comparativo de la metodología mixta y la basada en juegos reducidos en el fútbol base (Comparative analysis mixed methodology and small-sided games in young soccer players)

Retos ◽  
2017 ◽  
pp. 199-203
Author(s):  
Norberto Pascual Verdú ◽  
David Guillén Ariño ◽  
José Antonio Carbonell Martínez
Keyword(s):  
Comparative Analysis ◽  
Statistical Analysis ◽  
The Other ◽  
Mixed Methodology ◽  
Soccer Players ◽  
Physical Test ◽  
Change Of Direction ◽  
Before And After ◽  
Post Test ◽  
Number Of Passes

El objetivo de este estudio fue comparar un programa de entrenamiento utilizando una metodología mixta con otra basada en juegos reducidos (JR) en jugadores de fútbol jóvenes. La muestra estuvo compuesta por 24 jugadores, divididos en dos grupos: 12 jugadores de fútbol (11,69 ± 0,29 años de edad; 39,92 ± 9,03 kg de peso; 145,44 ± 7,03 cm de altura) utilizaron la metodología basada en juegos reducidos, y los otros 12 jugadores (11,74 ± 0,26 años; 37,04 ± 4,93 kg de peso; 145,12 ± 6,18 cm de altura) utilizaron la metodología mixta, todos los participantes pertenecían a la categoría alevín. Los programas estaban compuestos de 12 sesiones de 90 minutos durante 6 semanas. Los futbolistas fueron evaluados previa y posteriormente a la realización del programa (pre-test y post-test) mediante 4 test técnicos (conducción lineal, con cambio de dirección, tiro y pase en carrera), 1 test táctico que enfrentaba a ambos grupos (posesión 4vs4) y 2 test físicos (Course Navette y salto horizontal). Tras el análisis estadístico con la prueba T Student, se encuentran diferencias significativas (p<.05) de los jugadores que utilizaron la metodología basada en JR en los gestos de conducción de balón (lineal y con giros) y en la eficacia y número de pases efectuados durante la conservación de balón.Abstract. The aim of this study was to compare a training program using mixed methodology with another based on small-sided games (JR) in young soccer players. The sample consisted of 24 players, divided into two groups: 12 soccer players (11.69±0.29 years, 39.92 ± 9.03 kg, 145.44 ± 7.03 cm) used the methodology based on small-sided games, and the other 12 players (11.74 ± 0.26 years, 37.04 ± 4.93 kg, 145.12 ± 6.18 cm) used the mixed methodology, all participants belonged to the U12 category. The programs were composed of 12 sessions of 90 minutes for 6 weeks. The players were evaluated before and after the program (pre-test and post-test) by means of four technical tests (linear conduction with change of direction, shot and pass in the race), one a tactical test facing both groups (possession 4vs4) and two physical test (course navette and horizontal jump). After the statistical analysis with the t-test, we find significant differences (p <.05) of the players who used the methodology based on small-sided games in the gestures of ball conduction (linear and with turns) and in the effectiveness and number of passes made during conservation ball.

scholarly journals The Effect of Geogebra on Students’ Conceptual and Procedural Knowledge: The Case of Applications of Derivative

2017 ◽  
Vol 7 (2) ◽  
pp. 67 ◽  
Author(s):  
Mehmet Fatih Ocal
Keyword(s):  
Conceptual Knowledge ◽  
Teaching And Learning ◽  
Procedural Knowledge ◽  
Dynamic Geometry ◽  
The Other ◽  
Control Group ◽  
Other Hand ◽  
Significant Difference ◽  
Before And After ◽  
Post Test

Integrating the properties of computer algebra systems and dynamic geometry environments, Geogebra became an effective and powerful tool for teaching and learning mathematics. One of the reasons that teachers use Geogebra in mathematics classrooms is to make students learn mathematics meaningfully and conceptually. From this perspective, the purpose of this study was to investigate whether instruction with Geogebra has effect on students’ achievements regarding their conceptual and procedural knowledge on the applications of derivative subject. This study adopted the quantitative approach with pre-test post-test control group true experimental design. The participants were composed of two calculus classrooms involving 31 and 24 students, respectively. The experimental group with 31 students received instruction with Geogebra while the control group received traditional instruction in learning the applications of derivative. Independent samples t-test was used in the analysis of the data gathered from students’ responses to Applications of Derivative Test which was subjected to them before and after teaching processes. The findings indicated that instruction with Geogebra had positive effect on students’ scores regarding conceptual knowledge and their overall scores. On the other hand, there was no significant difference between experimental and control group students’ scores regarding procedural knowledge. It could be concluded that students in both groups were focused on procedural knowledge to be successful in learning calculus subjects including applications of derivative in both groups. On the other hand, instruction with Geogebra supported students’ learning these subjects meaningfully and conceptually.

Comparative Analysis of Barefoot and Shod Running

2011 ◽  
Vol 20 (3-4) ◽  
pp. 113-130 ◽  
Author(s):  
Colin Utz-Meagher ◽  
John Nulty ◽  
Lisa Holt
Keyword(s):  
Comparative Analysis ◽  
Force Plate ◽  
Video Camera ◽  
Repeated Measure ◽  
Initial Contact ◽  
Baseline Trial ◽  
Repeated Measure Anova ◽  
Measure Anova ◽  
Before And After ◽  
Post Test

Comparative Analysis of Barefoot and Shod Running This study investigated the biomechanical difference between running barefoot and shod before and after a barefoot training program (BTP). Foot angles at contact (FA), contact time (CT), stride length (SL), initial contact force (ICF), and total peak force (TPF) in shod and unshod runners was analyzed. Fourteen collegiate runners attended 12 total sessions over a two week period. Subjects performed a baseline trial, running eight (10-20 meter) repetitions, four barefoot and four shod, at three different stations; running over a force plate, running in front of a SONY DCR-HC52 video camera (30fps) and running in front of a Casio Exilim Pro EX-F1 camera (300fps). A Post-Test (PT) was conducted at the end of the BTP. A repeated measure ANOVA showed significance (p<.05) in the Test factor, BTP; lowering participants FA mean from 18.8deg+/-.9deg to 5.6deg+/-15.1deg, CT mean from .221m+/-.02m to .2m+/-.03m, and TPF mean from 1427.4N+/-312.9N to 1348.2N+/-269.4N. A repeated measure ANOVA showed significance (p<.05) in the Condition factor (shod vs. unshod); lowering participants FA mean from 23.1deg+/-12.6deg to 1.3deg+/-14.4deg, SL mean from .9m+/-.1m to .8m+/-.1m, and ICF mean from 1465.3N+/- 369.6N to 1324.7N+/-379.4N. Running barefoot and following a BTP alters running biomechanics in ways that may decrease running related injuries.

Carnival and Caucus: A Typology for Comparative Frontier History

1987 ◽  
Vol 11 (2) ◽  
pp. 139-167
Author(s):  
Richard Hogan
Keyword(s):  
Comparative Analysis ◽  
Statistical Analysis ◽  
Empirical Evidence ◽  
Theoretical Basis ◽  
Democratic Governance ◽  
Local History ◽  
The Other ◽  
American Frontier ◽  
Research Traditions ◽  
Community Solidarity

As Dykstra and Silag (1985) have noted, the analysis of American frontier towns continues to yield a plethora of local histories that might provide an empirical basis for generalization, if a theoretical basis for comparative analysis might be offered. The development of a rigorous methodology for historiographie and statistical analysis has facilitated the accumulation of empirical evidence, but the analysis of local history has not advanced far beyond the initial debate regarding the basis for democratic governance (Taylor, 1956). Instead, two research traditions have developed—one seeking to identify the socio-cultural basis for community solidarity, the other focusing on the partisan struggles that shape democratic governance.

scholarly journals The Effects of the TPACK-P Educational Program on Teachers’ TPACK: Programming as a Technological Tool

2018 ◽  
Vol 7 (3.34) ◽  
pp. 636
Author(s):  
Seong Won Kim ◽  
Youngjun Lee
Keyword(s):  
Statistical Analysis ◽  
Training Program ◽  
Content Knowledge ◽  
Educational Program ◽  
Control Group ◽  
Significant Difference ◽  
Before And After ◽  
Post Test ◽  
Technological Tool ◽  
Experimental Group

Background/Objectives: This study examined the effects of introducing programming as a technological tool for teachers’ Technological Pedagogical Content Knowledge (TPACK) development.Methods/Statistical Analysis: Thirty-two teachers were divided into two groups, completing different types of TPACK educational programs. The control group’s TPACK training program was based on information and communication technology (ICT), while that of the experimental group was based on programming. To verify the effectiveness of the TPACK training program, tests were administered before and after the educational program. A statistical analysis of questionnaire results also investigated changes resulting from TPACK.Findings: Both the control and experimental groups showed statistically significant improvements in the post-test compared with the pre-test. However, in the detailed areas of TPACK by group, the improvements in the two groups differed. Unlike the control group, the experimental group showed a statistically significant improvement in the knowledge related to technology. This result illustrated that programming is effective in solving the problem of integrating technology into the classroom. In contrast, there was no significant difference in the post-test, as this was applied in the short term. However, programming has been shown to affect Technological Pedagogical Knowledge (TPK), Technological Content Knowledge (TCK), and TPACK. In summary, the results showed that a TPACK educational program based on programming is effective for teachers’ TPACK development. Keywords: TPACK, In-service teacher, Programming, TPACK-P, Educational program

scholarly journals Short-Term Compound Training on Physical Performance in Young Soccer Players

Sports ◽  
2020 ◽  
Vol 8 (8) ◽  
pp. 108 ◽  
Author(s):  
Athos Trecroci ◽  
Marco Duca ◽  
Damiano Formenti ◽  
Giampietro Alberti ◽  
F. Marcello Iaia ◽  
...  
Keyword(s):  
Vertical Jump ◽  
The Other ◽  
Soccer Players ◽  
Plyometric Training ◽  
Countermovement Jump ◽  
Short Term ◽  
Squat Jump ◽  
Change Of Direction ◽  
Compound Training ◽  
Strength Exercises

This study aimed to investigate the effects of a five-week compound training (with strength and plyometric exercises performed on separate days) on sprint, change of direction, and vertical jump in young soccer players. Eighteen novices in strength and plyometric training were assigned to either a compound training (CMPT) or a control condition (CNT). Both groups trained three times per week. One session was dedicated to soccer-specific drills. The other two weekly sessions were dedicated to circuit-based training routines employing on one-day strength exercises and on the other day plyometric exercises in the CMPT group. At the same time, the CNT group performed two weekly soccer-specific training sessions. All players were tested by 15-m sprint, change-of-direction and acceleration test (CODAT), squat jump, and countermovement jump with arms swing tests. CMPT group improved CODAT, squat jump and countermovement jump to a higher extent compared to CNT group (large vs small or trivial effects, p < 0.05), while both groups had similar 15-m sprint performance (p > 0.05). These results support the use of compound training to improve change of direction and vertical jump performances in young novice soccer players, which are unfamiliar with structured and advanced strength and plyometric training.

scholarly journals Comparing Israeli attacks towards Gaza Strip before and after Palestine's accession to the ICC

2020 ◽  
Vol 8 (12) ◽  
pp. 282-296
Author(s):  
Said Aldahshan
Keyword(s):  
Statistical Analysis ◽  
International Criminal Court ◽  
International Criminal ◽  
Gaza Strip ◽  
Criminal Court ◽  
The Other ◽  
Before And After ◽  
The Gaza Strip ◽  
Second Period ◽  
Made In

In order to search for any changes in the number and type of Israeli attacks on the Gaza Strip after Palestine’s accession to the International Criminal Court, a statistical analysis was conducted comparing five years before joining from 2010 to 2014 versus five years after accession from 2015 to 2019. By relying on official statistics issued by the human rights centers, the comparison was made in 1- the numbers and types of the victims 2- The targets that these attacks hit, and the researcher found, that there was a significant decrease in the number of dead, from (2730) in the first period it decreased to (436) in the second period, In contrast to the number of wounded, which rose from (13948) to (22165) in the second period due to the Great Return March. When comparing the ratio of the dead to the wounded in each period, it was found that it was proportional to (51) wounded, for every (10) dead, which increased dramatically and became (508) wounded for every (10) killed. On the other hand, the number of hit targets from (59155) to (23,464). And the category of targeting cars and motorcycles from (1311) became only (4), which is a percentage closer to zero in this category. All of this confirms that Israel has changed the number and type of its attacks against the Gaza Strip, and the nature of the objectives it intended in both quality and quantity after Palestine joined ICC.

scholarly journals The Use of Digital Comic in Developing Student's English Competence

2020 ◽  
Vol 8 (2) ◽  
pp. 373-383
Author(s):  
Finaty Ahsanah ◽  
Dias Tiara Putri Utomo
Keyword(s):  
Statistical Analysis ◽  
Foreign Language ◽  
Learning Activities ◽  
English Learning ◽  
Paired Sample ◽  
Effective Media ◽  
Before And After ◽  
Post Test ◽  
The Media ◽  
English Competence

This current study is aimed to know whether any improvement or not in using digital comics as the media on student’s English competence. The researchers used a quantitative approach with a pre-experimental design. This research was conducted at Universitas Muhammadiyah Lamongan and the sample was 42 pharmacist medical students. The instrument that was used to measure students’ English competence was the Test of English as a Foreign Language (TOEFL). The result of the test was analyzed by using statistical analysis of paired sample t-test. The finding showed that there was significant improvement before and after the treatment, it can be proved by the significant value of the pre and post-test which was 0.000 (2 tailed). Since the significance value (2-tailed) was less than 0.05, it means that the hypotheses of this study were accepted. In other words, the students positively received the use of digital comics for English learning activities. Therefore, digital comics can be assumed as an effective media or tool for enhancing students’ English competence.   

scholarly journals Effects of a Specific Core Stability Program on the Sprint and Change-of-Direction Maneuverability Performance in Youth, Male Soccer Players

2021 ◽  
Vol 18 (19) ◽  
pp. 10116
Author(s):  
Eric Brull-Muria ◽  
Jose Vicente Beltran-Garrido
Keyword(s):  
Performance Studies ◽  
Athletic Performance ◽  
Core Stability ◽  
Intervention Programs ◽  
Soccer Players ◽  
Change Of Direction ◽  
Stability Group ◽  
Weekly Training ◽  
Before And After ◽  
Soccer Training

Although it is recommended to use sport-specific training programs to optimize performance, studies analyzing the effects of the core stability training with high levels of sport-specificity on athletic performance are insufficient and unclear. The objective of this study was to analyze the effects of the level of specificity of a CORE stability program on specific soccer actions. Fourteen youth players were randomly assigned to the specific core stability group (SCS; n = 7) or the general core stability group (GCS; n = 7). The eight-week intervention consisted of two weekly training sessions added to the usual soccer training. Both groups performed four CORE stability tasks. The SCS group followed the principle of sports specificity, while the GCS group performed CORE stability commons. Ten-meter linear sprinting (Sprint) and change-of-direction maneuverability (V-cut) were evaluated before and after the intervention programs. A statistically significant improvement was obtained in Sprint (d = 0.84 95% CI (0.22, 1.45), p = 0.008) and V-cut (d = 1.24 95% CI (0.52, 1.93), p < 0.001). At posttest, statistically nonsignificant differences were obtained between groups in Sprint (d = 1.03 95% CI (−0.25, 2.30), p = 0.082) and V-cut (d = −0.56 95% CI (−1.89, 0.78), p = 0.370). In conclusion, sprint and change-of-direction maneuverability were improved, but there was no superiority of any type of training.

Effect of Heavy Resisted Sled Sprint Training During the Competitive Season on Sprint and Change-of-Direction Performance in Professional Soccer Players

2019 ◽  
Vol 14 (8) ◽  
pp. 1066-1073 ◽  
Author(s):  
Brian J. McMorrow ◽  
Massimiliano Ditroilo ◽  
Brendan Egan
Keyword(s):  
Training Group ◽  
Sprint Performance ◽  
Soccer Players ◽  
Confidence Limits ◽  
Sprint Training ◽  
Change Of Direction ◽  
Professional Soccer ◽  
Competitive Season ◽  
Before And After ◽  
Total Program

Purpose: Resisted sled sprinting (RSS) is an effective tool for improving sprint performance over short distances, but the effect on change-of-direction (COD) performance is largely unknown. The present study investigated the effect of heavy RSS training during the competitive season on sprint and COD performance in professional soccer players. Methods: Over 6 wk in-season, an RSS training group (n = 6) performed RSS at a sled load of 30% body mass for a total program running distance of 800 m, whereas an unresisted sprint (URS) training group (n = 7) performed the same distance of unresisted sprinting. A 20-m maximal sprint with split times measured at 5, 10, and 20 m and the sprint 9-3-6-3-9 m with 180° turns COD test were performed before and after the intervention. Results: Sprint performance (mean, 95% confidence limits, qualitative inference) was improved in both groups over 5 m (URS, 5.1%, −2.4 to 12.7, likely moderate; RSS, 5.4%, 0.5–10.4, likely moderate), 10 m (URS, 3.9%, −0.3 to 8.1, very likely moderate; RSS, 5.0%, 1.8–8.0, very likely large), and 20 m (URS, 2.0%, −0.6 to 4.5, likely moderate; RSS, 3.0%, 1.7–4.4, very likely moderate). COD was improved in both groups (URS, 3.7%, 2.2–5.2, most likely large; RSS, 3.3%, 1.6–5.0, most likely moderate). Between-groups differences were unclear. Conclusion: Heavy RSS and URS training matched for running distance were similarly effective at improving sprint and COD performance in professional soccer players when performed in the competitive phase of the season.

Effects of Resisted Sprints With Changes of Direction Through Several Relative Loads on Physical Performance in Soccer Players

2019 ◽  
Vol 14 (8) ◽  
pp. 1022-1028 ◽  
Author(s):  
David Rodríguez-Osorio ◽  
Oliver Gonzalo-Skok ◽  
Fernando Pareja-Blanco
Keyword(s):  
Physical Performance ◽  
Body Mass ◽  
External Load ◽  
Soccer Players ◽  
Countermovement Jump ◽  
Change Of Direction ◽  
Before And After ◽  
Moderate Load ◽  
Run Test ◽  
Positive Effect

Purpose: To compare the effects of resisted change-of-direction (COD) movements, using several relative loads, on soccer players’ physical performance. Methods: Fifty-four male soccer players were randomly assigned to 1 of the following 3 groups, which differed only in the magnitude of the external load used during the COD training: COD training without external load (COD-0; n = 16), COD training with a 12.5% body-mass external load (COD-12.5; n = 19), and COD training with a 50% body-mass external load (COD-50; n = 19). Participants performed the specific COD training twice per week for 6 wk. Before and after the training period, a battery of tests was completed: countermovement jump, 30-m running sprint (time in 10 m [T10], 20 m [T20], and 30 m [T30]), L-run test, and V-cut test. Results: Within-group comparisons showed substantial improvements in countermovement jump and T10 (likely) in COD-0, whereas countermovement jump, T10, and T20 were substantially enhanced (possibly to likely) in COD-50. COD-12.5 induced substantial improvements in all analyzed variables (likely to most likely). Between-groups comparisons showed better effects on all analyzed variables for COD-12.5 than for COD-0 (possibly to very likely), whereas COD-50 only showed possibly better effects than COD-0 on T10. In addition, COD-12.5 induced a better effect on L-run and V-cut tests than COD-50 (possibly to likely). Conclusions: These results indicate that COD training, especially moderate load (12.5% body mass) resisted COD training, may have a positive effect on COD skills, running sprint performance, and jumping ability in young soccer players.

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