Efeito de um período de polimento na potência e capacidade anaeróbia de atletas de tae-kwon-do

DOI: http://dx.doi.org/10.5007/1980-0037.2017v19n2p224 The aim of the study was to analyze the effect of a tapering period on anaerobic power and capacity of tae-kwon-do athletes. Thirty-one male tae-kwon-do participants of the Brazilian Championship were selected in a non-probabilistic way. Subjects were randomly divided into two groups, namely: experimental group (EG, n = 15) and control group (CG, n = 17). Both groups followed the same training protocol up to the tapering stage. CG was submitted to training loads contained in the last two weeks of the macrocycle. Only EG was submitted to tapering. Tapering had 2 weeks duration, adopting the linear tapering method. Taekwondo Anaerobic Test was performed by athletes before the start of the season, which was named as pre-intervention, and the last week of each mesocycle [Prep I, Prep II and Tapering (only EG)]. Group vs. time effect interaction (p < 0.01) was identified for alactic anaerobic power, with an increase only in EG in tapering (p = 0.01). A significant group vs. time interaction (p <0.01) was revealed to fatigue index, improved anaerobic capacity being checked in EG only after the tapering period (p = 0.01). It was concluded that two weeks of linear type tapering optimized the anaerobic power and capacity of male tae-kwon-do athletes.

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Greater Power but Not Strength Gains Using Flywheel Versus Equivolumed Traditional Strength Training in Junior Basketball Players

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18031181 ◽

2021 ◽

Vol 18 (3) ◽

pp. 1181

Author(s):

Marko D. M. Stojanović ◽

Mladen Mikić ◽

Patrik Drid ◽

Julio Calleja-González ◽

Nebojša Maksimović ◽

...

Keyword(s):

Strength Training ◽

Training Group ◽

T Test ◽

Control Group ◽

Basketball Players ◽

Significant Group ◽

Sprint Time ◽

Change Of Direction ◽

Time Interaction ◽

And Control

The main aim of the present study was to compare the effects of flywheel strength training and traditional strength training on fitness attributes. Thirty-six well trained junior basketball players (n = 36; 17.58 ± 0.50 years) were recruited and randomly allocated into: Flywheel group (FST; n = 12), traditional strength training group (TST; n = 12) and control group (CON; n = 12). All groups attended 5 basketball practices and one official match a week during the study period. Experimental groups additionally participated in the eight-week, 1–2 d/w equivolume intervention conducted using a flywheel device (inertia = 0.075 kg·m−2) for FST or free weights (80%1 RM) for TST. Pre-to post changes in lower limb isometric strength (ISOMET), 5 and 20 m sprint time (SPR5m and SPR20m), countermovement jump height (CMJ) and change of direction ability (t-test) were assessed with analyses of variance (3 × 2 ANOVA). Significant group-by-time interaction was found for ISOMET (F = 6.40; p = 0.000), CMJ (F = 7.45; p = 0.001), SPR5m (F = 7.45; p = 0.010) and T test (F = 10.46; p = 0.000). The results showed a significantly higher improvement in CMJ (p = 0.006; 11.7% vs. 6.8%), SPR5m (p = 0.001; 10.3% vs. 5.9%) and t-test (p = 0.045; 2.4% vs. 1.5%) for FST compared to the TST group. Simultaneously, th FST group had higher improvement in ISOMET (p = 0.014; 18.7% vs. 2.9%), CMJ (p = 0.000; 11.7% vs. 0.3%), SPR5m (p = 0.000; 10.3% vs. 3.4%) and t-test (p = 0.000; 2.4% vs. 0.6%) compared to the CON group. Players from the TST group showed better results in CMJ (p = 0.006; 6.8% vs. 0.3%) and t-test (p = 0.018; 1.5% vs. 0.6%) compared to players from the CON group. No significant group-by-time interaction was found for sprint 20 m (F = 2.52; p = 0.088). Eight weeks of flywheel training (1–2 sessions per week) performed at maximum concentric intensity induces superior improvements in CMJ, 5 m sprint time and change of direction ability than equivolumed traditional weight training in well trained junior basketball players. Accordingly, coaches and trainers could be advised to use flywheel training for developing power related performance attributes in young basketball players.

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The Effect of a Food Addiction Explanation Model for Weight Control and Obesity on Weight Stigma

Nutrients ◽

10.3390/nu12020294 ◽

2020 ◽

Vol 12 (2) ◽

pp. 294 ◽

Cited By ~ 4

Author(s):

Kerry S. O’Brien ◽

Rebecca M. Puhl ◽

Janet D. Latner ◽

Dermot Lynott ◽

Jessica D. Reid ◽

...

Keyword(s):

Weight Control ◽

Food Addiction ◽

Public Support ◽

Personal Control ◽

Weight Stigma ◽

Control Group ◽

Significant Group ◽

Significant Group Difference ◽

Diet And Exercise ◽

And Control

There is increasing scientific and public support for the notion that some foods may be addictive, and that poor weight control and obesity may, for some people, stem from having a food addiction. However, it remains unclear how a food addiction model (FAM) explanation for obesity and weight control will affect weight stigma. In two experiments (N = 530 and N = 690), we tested the effect of a food addiction explanation for obesity and weight control on weight stigma. In Experiment 1, participants who received a FAM explanation for weight control and obesity reported lower weight stigma scores (e.g., less dislike of ‘fat people’, and lower personal willpower blame) than those receiving an explanation emphasizing diet and exercise (F(4,525) = 7.675, p = 0.006; and F(4,525) = 5.393, p = 0.021, respectively). In Experiment 2, there was a significant group difference for the dislike of ‘fat people’ stigma measure (F(5,684) = 5.157, p = 0.006), but not for personal willpower weight stigma (F(5,684) = 0.217, p = 0.81). Participants receiving the diet and exercise explanation had greater dislike of ‘fat people’ than those in the FAM explanation and control group (p values < 0.05), with no difference between the FAM and control groups (p > 0.05). The FAM explanation for weight control and obesity did not increase weight stigma and resulted in lower stigma than the diet and exercise explanation that attributes obesity to personal control. The results highlight the importance of health messaging about the causes of obesity and the need for communications that do not exacerbate weight stigma.

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Testing the Effectiveness of a Strengths-Based Intervention Targeting All 24 Strengths: Results From a Randomized Controlled Trial

Psychological Reports ◽

10.1177/0033294120937441 ◽

2020 ◽

pp. 003329412093744

Author(s):

Lobna Chérif ◽

Valerie M. Wood ◽

Christian Watier

Keyword(s):

Randomized Controlled Trial ◽

Character Strengths ◽

Controlled Trial ◽

Control Group ◽

Strength Development ◽

Character Strength ◽

Significant Group ◽

Randomized Controlled ◽

Time Interaction ◽

Experimental Group

This study assessed the effectiveness of a strengths-based randomized controlled trial focused on fostering all 24 character strengths in a group of 75 participants from a University in Tunisia. Participants randomly assigned to the challenge condition (n = 40) received an email each day for 24 days, that highlighted a particular strength of the day including why the strength is valuable, how to implement the strength behaviourally, and a motto related to that strength. Those in the control condition (n = 35) simply received emails containing the motto for each strength daily for 24 days. We assessed all participants’ levels of happiness before the experiment (T0), the day following the experiment (T1), and one-month following the experiment (T2). Results from a 2 (group) X 3 (time) split plot ANOVA revealed a significant group-by-time interaction, such that at T2 the experimental group had greater happiness scores than the control group. These findings provide some evidence that even “minimalist” interventions (involving the receipt of emails encouraging character-strength development), might be effective for promoting gains in happiness even one month after the intervention.

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I Will Use Declarative Self-Talk . . . or Will I? Replication, Extension, and Meta-Analyses

The Sport Psychologist ◽

10.1123/tsp.2016-0088 ◽

2018 ◽

Vol 32 (1) ◽

pp. 16-25 ◽

Cited By ~ 3

Author(s):

Judy L. Van Raalte ◽

Allen E. Cornelius ◽

Elizabeth M. Mullin ◽

Britton W. Brewer ◽

Erika D. Van Dyke ◽

...

Keyword(s):

Perceived Exertion ◽

The Self ◽

Group Differences ◽

Control Group ◽

Significant Group ◽

Self Talk ◽

Outcome Differences ◽

And Performance ◽

Meta Analyses ◽

And Control

A series of studies was conducted by Senay et al. in 2010 to replicate and extend research indicating that self-posed questions have performance benefits. Studies 1–3 compared the effects of the self-posed interrogative question (“Will I?”) to declarative (“I will”) and control self-talk, and found no significant group differences in motivation, perceived exertion, or performance. In Studies 4–5, interrogative, declarative, and control self-talk primes were compared, and no outcome differences were found. In Study 6, the effects of self-talk on motivation, perceived exertion, and physical performance were assessed. The self-talk groups performed better and were more motivated than the control group, but declarative and interrogative groups did not differ from each other. Finally, meta-analyses of the six studies indicated no significant differences among conditions. These results highlight the value of replication and suggest that factors other than grammatical form of self-posed questions may drive the demonstrated relationships between self-talk and performance.

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Functional Effects of Inertial Training of the Upper Extremity

Journal of Sport Rehabilitation ◽

10.1123/jsr.12.3.229 ◽

2003 ◽

Vol 12 (3) ◽

pp. 229-239 ◽

Cited By ~ 4

Author(s):

Todd A. McLoda ◽

Kate M. Murphy ◽

Steve Davison

Keyword(s):

Upper Extremity ◽

Outcome Measures ◽

Repeated Measures ◽

Biceps Brachii ◽

Exercise Group ◽

Emg Activity ◽

Control Group ◽

Significant Group ◽

Time Interaction ◽

Size Groups

Context:Inertial training of the shoulder.Objective:To determine the differences of functional and EMG measures between a control group and an exercise group of overhead throwers.Design:Repeated measures.Setting:Research laboratory.Participants:17 intercollegiate baseball players and 19 intercollegiate softball players divided into 2 equal-size groups, control and exercise.Main Outcome Measures:Preliminary data were recorded, including throwing velocity, throwing accuracy, and EMG activity of the biceps brachii, upper pectorals, and posterior deltoid. The exercise group completed a 4-week training regimen on the Impulse Inertial Trainer. All participants returned for follow-up measures.Results:No significant group-by-time interaction occurred relative to ball velocity, accuracy, or EMG activity.Conclusion:For experienced throwers, functional measures and muscle activity during throwing were not affected by inertial training of the upper extremity.

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The Effects of Videoconferenced Distance-Learning Instruction in a Taiwanese Company

International Journal of Distance Education Technologies ◽

10.4018/jdet.2011040105 ◽

2011 ◽

Vol 9 (2) ◽

pp. 52-64

Author(s):

Chin-Hung Lin ◽

Shu-Ching Yang

Keyword(s):

Emotional Intelligence ◽

Distance Learning ◽

Real Time ◽

Control Group ◽

Learning Achievement ◽

Face To Face ◽

Time Interaction ◽

Learning Instruction ◽

Face To Face Instruction ◽

And Control

Distance learning, where instruction is given to students despite wide separations of students and teachers, is increasingly popular. Videoconferencing, which is examined in this study, is a distance learning mode of featuring real-time interaction of students and teachers and provides sequence, real-time, vision, and actual interaction. This study focuses on learning achievement compared to that of face-to-face instruction at one fixed location. It investigates the interrelation of learning achievement, gender, emotional intelligence, and motivation. Statistical techniques are used to analyze and evaluate the data. The subjects were divided into a target group and control group. The findings were that learning achievement was similar for videoconferencing and traditional face-to-face instruction. It showed a significant relationship between emotional intelligence and learning achievement. An implication is that a judicious embedding of emotional intelligence consideration in the design and implementation of videoconferencing courses might enhance learning achievement.

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The Effects of Ten Weekly Plyometric Training of Judokas on Anaerobic Power

Journal of Education and Training Studies ◽

10.11114/jets.v5i13.2902 ◽

2017 ◽

Vol 5 (13) ◽

pp. 52 ◽

Cited By ~ 1

Author(s):

Ahmet Uzun ◽

Onder Karakoc

Keyword(s):

Anaerobic Power ◽

T Test ◽

Control Group ◽

Plyometric Training ◽

Warm Up ◽

Male Age ◽

Post Test ◽

The Difference ◽

And Control ◽

Experimental Group

This study was conducted to determine the effects of ten weekly plyometric training on anaerobic power in judokas. 30 male judokas participated in the study and the subjects were divided into two groups as an experimental (15 male age = 21,40 ± 1,99) and control (15 male age = 21,53 ± 1,80) groups. Judo training programme was applied in both groups for 3 days / 90 minutes per week. Experimental and control group were made warm up exercises for 20 minutes. Both groups continued with the special preparatory period judo training program. After warm up exercises, experimental group judokas were made plyometric training consisting of 15 different movements for 20 minutes. Then they were allowed to continue the judo training. As the groups showed normal distribution, Paired Samples T-Test was applied for the significance between pre-test and post-test measurements of the groups. Independent Samples T-Test was used to analyze the difference between the test group and control group. The Independent Samples T-Test was used to analyze the difference between the experimental group and the control group. As a result of the plyometric training, when the pre-test and post-test differences of the physical measurement parameters for the experimental and control groups were compared, the mean values of back strength, anaerobic power and body fat percentage were found to be significant(p0.05). As a result, it is seen that the regular plyometric exercises increase the performance of anaerobic power to judokas. It can be said that putting plyometric training besides judo training has a positive effect for performance.

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Local Vibration Influence of Anaerobic Capacity in Rowers

SOCIETY INTEGRATION EDUCATION Proceedings of the International Scientific Conference ◽

10.17770/sie2012vol2.139 ◽

2015 ◽

Vol 2 ◽

pp. 257

Author(s):

Kalvis Ciekurs ◽

Viesturs Krauksts

Keyword(s):

Considerable Increase ◽

Anaerobic Capacity ◽

Whole Body ◽

Control Group ◽

Triceps Brachii ◽

Local Vibration ◽

Rowing Ergometer ◽

Before And After ◽

And Control ◽

Experimental Group

Whole body vibration is a worldwide innovation as a part of training method that helps athletes to regain the power and get ready for next training faster. However less attention is paid to local vibration where an isolated muscle or muscle group is stimulated by the use of a vibration device. For the reason to determine the effect of local vibration on anaerobic capacity of rowers, two research groups were assembled from the students of Murjāņi Sport Gymnasium (MSG) during the period of time from November 13, 2010 to March 20, 2011 - the experimental group (EG) and control group (CG). We manage tests with stationary Concept-II ergometer, EMG and goniometry before and after the sessions of local vibrations. After the local vibration sessions for experimental group, the anaerobic test results prove considerable increase on the stationary rowing ergometer Concept - II. As for the control group, there were no considerable increase observed. EMG proves considerable Triceps Brachii muscle activity improvement for the experimental group, yet the activity improvement was not observed for the control group.

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Vicarious Experience to Affect Physical Activity in Women: A Randomized Control Trial

Western Journal of Nursing Research ◽

10.1177/0193945919856575 ◽

2019 ◽

Vol 42 (4) ◽

pp. 286-292

Author(s):

Sheri A. Rowland ◽

Marlene Z. Cohen ◽

Carol H. Pullen ◽

Paula S. Schulz ◽

Kris E. Berg ◽

...

Keyword(s):

Physical Activity ◽

Intervention Group ◽

Physical Activity Behavior ◽

Control Group ◽

Significant Group ◽

Peer Modeling ◽

Healthy Behaviors ◽

Self Evaluation ◽

Time Interaction ◽

Peer Models

People compare themselves to others for self-evaluation, practical information, and motivation for healthy behaviors. The effect of active peer models on comparative thinking is unknown. The purpose of this 12-week, randomized, two-group pilot study was to evaluate the effect of a workplace peer modeling intervention on self-efficacy, motivation, and comparative thinking. The attention control group (ACG; n = 24) received general health information. The intervention group ( n = 26) met with active peer models, received an exercise prescription and information. No significant group by time interaction effects were found. Comparisons on ability (how well am I doing), opinions (what should I think or believe), future self (think about my future), and modeling (be like someone else) all increased in the intervention group ( n = 21) but decreased in the ACG ( n = 22). Active peer models may support physical activity behavior change through specific lines of comparative thinking.

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