scholarly journals Impact of Movement Tempo Distribution on Bar Velocity During a Multi-Set Bench Press Exercise

2021 ◽  
Vol 80 (1) ◽  
pp. 277-285
Author(s):  
Robert Trybulski ◽  
Jakub Jarosz ◽  
Michal Krzysztofik ◽  
Aleksandra Filip-Stachnik ◽  
Patryk Matykiewicz ◽  
...  
Keyword(s):  
Repeated Measures ◽  
Bench Press ◽  
Repeated Measures Anova ◽  
Testing Conditions ◽  
Healthy Men ◽  
The Third ◽  
Velocity Changes ◽  
Bar Velocity ◽  
Slow Tempo ◽  
Post Hoc

Abstract The goal of the present study was to evaluate the effect of contrast tempo movement on bar velocity changes during a multi-set bench press exercise. In randomized and counter-balanced order, participants performed three sets of the bench press exercise at 60%1RM under two testing conditions: E-E where all repetitions were performed with explosive (X/0/X/0) movement tempo; and S-E where the first two repetitions were performed with a slow tempo (5/0/X/0) while the third repetition was performed with explosive movement tempo (slow, slow, explosive). Twelve healthy men volunteered for the study (age = 30 ± 5 years; body mass = 88 ± 10 kg; bench press 1RM = 145 ± 24 kg). The three-way repeated measures ANOVA (tempo × set × repetition) showed statistically significant multi-interaction effect for peak bar velocity (p < 0.01; η2 = 0.23), yet not for mean bar velocity (p = 0.09; η2 = 0.14). The post hoc results for multi-interaction revealed that peak bar velocity in the 3rd repetition was significantly higher for E-E compared to SE only during set 1 (p < 0.001). Therefore, the distribution of movement tempo had a significant impact on peak bar velocity, but not on mean bar velocity. The decrease in peak bar velocity in the 3rd repetition during the S-E condition was observed only in the first set, while such a tendency was not observed in the second and third set.

scholarly journals Contrast Tempo of Movement and Its Effect on Power Output and Bar Velocity During Resistance Exercise

2021 ◽  
Vol 11 ◽  
Author(s):  
Michal Wilk ◽  
Jakub Jarosz ◽  
Michal Krzysztofik ◽  
Aleksandra Filip-Stachnik ◽  
Marcin Bialas ◽  
...  
Keyword(s):  
Power Output ◽  
Repeated Measures ◽  
Bench Press ◽  
Peak Power Output ◽  
Experimental Session ◽  
Main Effect ◽  
Bar Velocity ◽  
Slow Tempo ◽  
Post Hoc ◽  
The Impact

In this study, we examined the impact of contrast movement tempo (fast vs. slow) on power output and bar velocity during the bench press exercise. Ten healthy men (age = 26.9 ± 4.1 years; body mass = 90.5 ± 10.3 kg; bench press 1RM = 136.8 ± 27.7 kg) with significant experience in resistance training (9.4 ± 5.6 years) performed the bench press exercise under three conditions: with an explosive tempo of movement in each of three repetitions (E/E/E = explosive, explosive, explosive); with a slow tempo of movement in the first repetition and an explosive tempo in the next two repetitions (S/E/E = slow, explosive, explosive); and with a slow tempo of movement in the first two repetitions and an explosive tempo in the last repetition (S/S/E = slow, slow, explosive). The slow repetitions were performed with a 5/0/5/0 (eccentric/isometric/concentric/isometric) movement tempo, while the explosive repetitions were performed with an X/0/X/0 (X- maximal speed of movement) movement tempo. During each experimental session, the participants performed one set of three repetitions at 60%1RM. The two-way repeated measures ANOVA showed a statistically significant interaction effect for peak power output (PP; p = 0.03; η2 = 0.26) and for peak bar velocity (PV; p = 0.04; η2 = 0.24). Futhermore there was a statistically significant main effect of condition for PP (p = 0.04; η2 = 0.30) and PV (p = 0.02; η2 = 0.35). The post hoc analysis for interaction revealed that PP was significantly higher in the 2nd and 3rd repetition for E/E/E compared with the S/S/E (p &lt; 0.01 for both) and significantly higher in the 2nd repetition for the S/E/E compared with S/S/E (p &lt; 0.01). The post hoc analysis for interaction revealed that PV was significantly higher in the 2nd and 3rd repetition for E/E/E compared with the S/S/E (p &lt; 0.01 for both), and significantly higher in the 2nd repetition for the S/E/E compared with the S/S/E (p &lt; 0.01). The post hoc analysis for main effect of condition revealed that PP and PV was significantly higher for the E/E/E compared to the S/S/E (p = 0.04; p = 0.02; respectively). The main finding of this study was that different distribution of movement tempo during a set has a significant impact on power output and bar velocity in the bench press exercise at 60%1RM. However, the use of one slow repetition at the beginning of a set does not decrease the level of power output in the third repetition of that set.

scholarly journals The Acute Post-Activation Performance Enhancement of the Bench Press Throw in Disabled Sitting Volleyball Athletes

2021 ◽  
Vol 18 (7) ◽  
pp. 3818
Author(s):  
Michal Krzysztofik ◽  
Patryk Matykiewicz ◽  
Diana Celebanska ◽  
Jakub Jarosz ◽  
Eliza Gawel ◽  
...  
Keyword(s):  
Body Mass ◽  
Repeated Measures ◽  
Peak Power ◽  
Bench Press ◽  
Performance Enhancement ◽  
Peak Power Output ◽  
Volleyball Players ◽  
Before And After ◽  
Bar Velocity ◽  
Post Hoc

The purpose of the present study was to examine the acute effects of the bench press exercise with predetermined velocity loss percentage on subsequent bench press throw (BPT) performance with raised legs or feet on the floor among disabled, sitting volleyball players. Twelve elite sitting volleyball athletes (age = 33 ± 9 years; body mass = 84.7 ± 14.7 kg; relative bench press maximum strength = 1.0 ± 0.3 kg/body mass) took part in this study. The experiment was performed following a randomized crossover design, where each participant performed a single set of bench press with a 60% one-repetition maximum (1RM) to a 10% decrease of mean bar velocity as a conditioning activity (CA). The BPT with a 60%1RM was performed to assess changes in peak power (PP), peak velocity (PV) before and after the CA. The differences between analyzed variables before and after the CA were verified using two-way repeated-measures ANOVA (condition × time; 2 × 2). The ANOVA showed a significant main effect of time for peak bar velocity (p = 0.03; η2 = 0.312) and peak power output (p = 0.037; η2 = 0.294). The post hoc comparison showed a significant increase in post-CA peak bar velocity and peak power for raised legs condition in comparison with pre-CA value (p = 0.02, p = 0.041, respectively). The present study showed that the subsequent BPT performed with raised legs could be enhanced by the bench press with a 60% 1RM to a 10% mean bar velocity decrease as a CA among disabled sitting volleyball players. Therefore, athletes and coaches can consider performing a bench press throw with raised legs without compromising performance.

The Effect of Grip Width on Bench Press Performance

1992 ◽  
Vol 8 (1) ◽  
pp. 1-10 ◽  
Author(s):  
Loree L. Wagner ◽  
Sharon A. Evans ◽  
Joseph P. Weir ◽  
Terry J. Housh ◽  
Glen O. Johnson
Keyword(s):  
Body Weight ◽  
Repeated Measures ◽  
Bench Press ◽  
Two Dimensional ◽  
Repeated Measures Anova ◽  
First Order ◽  
Experienced Male ◽  
Partial Correlations ◽  
Press Performance ◽  
Post Hoc

The purpose of this study was to determine the effects of grip width, chest depth, limb lengths, and bar path on the performance of a maximal bench press. Subjects were 24 experienced male weight trainers. Bench press performance was assessed at six different grip widths (G1–G6). Repeated-measures ANOVA with Tukey post hoc comparisons revealed that bench press strength values at the two moderate grip widths (G3 and G4) were significantly greater than either the narrow or wide grip widths. First-order partial correlations showed no significant relationship between strength values and anthropometric variables when adjusted for differences in body weight. Standard two-dimensional cinematographic procedures were used to film a subsample (n = 6) while bench pressing using G1, G3, and G6. The results of the statistical comparisons of bar path indicated that as grip width increased, the horizontal and vertical distance from the bar to the shoulder decreased.

scholarly journals INFLUÊNCIA DO TREINAMENTO CONCORRENTE DE CAPOEIRA E ATLETISMO NO DESEMPENHO MOTOR DE CRIANÇAS PRATICANTES DE FUTSAL

1970 ◽  
Vol 81 (155) ◽  
Author(s):  
Evaldo Maciel Pinto ◽  
Diogo Guimarães ◽  
Athos Henrique Rocha Villaça ◽  
Sebastião Lobo Da Silva ◽  
Bibiano Madrid
Keyword(s):  
Weight Gain ◽  
Motor Skills ◽  
Repeated Measures ◽  
Motor Performance ◽  
Concurrent Training ◽  
Motor Proficiency ◽  
Repeated Measures Anova ◽  
Kolmogorov Smirnov ◽  
Study Participants ◽  
Post Hoc

This study aimed to determine the influence of concurrent training and athletic capoeira levels of motor performance in children aged 7 to 10 years indoor football. Study participants were children (n = 39) were male. The subjects were divided into two groups, submitted to concurrent training, the AF group (n = 20) underwent the training of soccer and athletics and FC group (n = 19) soccer and capoeira. To study and evaluate the level of motor  performance of the two sample groups, we applied a battery of tests for statistical analysis and checked the normality of the data (Kolmogorov-Smirnov) and applied repeated measures ANOVA with post hoc Bonferroni. We used the statistical packages SPSS (12.0) and Instat (3.0). The results note that in terms of motor proficiency children who practiced FC compared to  children who practiced FA had equal values in the components of motor skills, however, both groups showed a trend in weight gain in their motor skills.

Effect of Sodium Bicarbonate Supplementation on 2000-m Rowing Performance

2014 ◽  
Vol 9 (1) ◽  
pp. 139-144 ◽  
Author(s):  
Ruth M. Hobson ◽  
Roger C. Harris ◽  
Dan Martin ◽  
Perry Smith ◽  
Ben Macklin ◽  
...  
Keyword(s):  
Sodium Bicarbonate ◽  
Repeated Measures ◽  
Base Excess ◽  
Repeated Measures Anova ◽  
The Third ◽  
Design Time ◽  
Rowing Performance ◽  
Rowing Ergometer ◽  
High Concentrations ◽  
Double Blinded

The ability to buffer H+ could be vital to exercise performance, as high concentrations of H+ contribute to the development of fatigue.Purpose:The authors examined the effect of sodium bicarbonate (SB) supplementation on 2000-m rowing-ergometer performance.Methods:Twenty male rowers (age 23 ± 4 y, height 1.85 ± 0.08 m, mass 82.5 ± 8.9 kg, 2000-m personal-best time 409 ± 16 s) completed two 2000-m rowing-ergometer time trials, separated by 48 h. Participants were supplemented before exercise with 0.3 g/kg body mass of SB or a placebo (maltodextrin; PLA). The trials were conducted using a double-blinded, randomized, counterbalanced crossover study design. Time to complete the 2000-m and time taken for each 500-m split were recorded. Blood lactate, bicarbonate, pH, and base excess were determined preexercise, immediately postexercise, and 5 min postexercise. Performance data were analyzed using paired t tests, as well as magnitude-based inferences; hematological data were analyzed using a repeated-measures ANOVA.Results:Using paired t tests, there was no benefit of SB over PLA (P = .095). However, using magnitude-based inferences there was a likely beneficial effect of SB compared with PLA (PLA 412.0 ± 15.1 s, SB 410.7 ± 14.9 s). Furthermore, SB was 0.5 ± 1.2 s faster than PLA in the third 500 m (P = .035; possibly beneficial) and 1.1 ± 1.7 s faster in the fourth 500 m (P = .004; very likely beneficial). All hematological data were different between SB and PLA and were different from preexercise to postexercise.Conclusion:SB supplementation is likely to be beneficial to the performance of those competing in 2000-m rowing events, particularly in the second half of the event.

scholarly journals THE MISUSE OF SYNTAX ALTERATION FOR GEE AND ANOVA POST-HOC ANALYSES IN SPSS

2020 ◽  
Vol 7 (1) ◽  
pp. 1-6
Author(s):  
João Pedro Nunes ◽  
Giovanna F. Frigoli
Keyword(s):  
Repeated Measures ◽  
Type I Error ◽  
Statistical Tests ◽  
Data Interpretation ◽  
Online Support ◽  
Type I ◽  
K Value ◽  
Repeated Measures Anova ◽  
Post Hoc ◽  
Statistical Results

The online support of IBM SPSS proposes that users alter the syntax when performing post-hoc analyses for interaction effects of ANOVA tests. Other authors also suggest altering the syntax when performing GEE analyses. This being done, the number of possible comparisons (k value) is also altered, therefore influencing the results from statistical tests that k is a component of the formula, such as repeated measures-ANOVA and Bonferroni post-hoc of ANOVA and GEE. This alteration also exacerbates type I error, producing erroneous results and conferring potential misinterpretations of data. Reasoning from this, the purpose of this paper is to report the misuse and improper handling of syntax for ANOVAs and GEE post-hoc analyses in SPSS and to illustrate its consequences on statistical results and data interpretation.

scholarly journals Evaluation of Residual Monomers Eluted from Pediatric Dental Restorative Materials

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Tugba Bezgin ◽  
Ceren Cimen ◽  
Nurhan Ozalp
Keyword(s):  
High Performance Liquid Chromatography ◽  
Repeated Measures ◽  
High Performance ◽  
Adverse Reactions ◽  
Composite Resins ◽  
Repeated Measures Anova ◽  
Restorative Materials ◽  
Polishing Procedures ◽  
Post Hoc ◽  
Dental Restorative

Unreacted monomers eluted from resin-based restorative materials have been considered a reason of local and systemic adverse reactions. This study was designed to determine the effect of finishing and polishing procedures on the elution of Bis-GMA, TEGDMA, UDMA, and HEMA monomers from compomer and bulk-fill composite resins. Bulk-fill composite (3M ESPE GmbH, Seefeld, Germany) and compomer (Dentsply DeTrey GmbH, Konstanz, Germany) specimens with 3 × 4   mm diameters were prepared. The specimens were randomly divided into two groups, and finishing-polishing procedures were applied only to the experimental groups. Release of residual monomers was analyzed by using High-Performance Liquid Chromatography (HPLC) after 24, 48, and 72 hours. Repeated measures ANOVA and Tukey post hoc tests were used for comparisons. Finishing and polishing procedures had a significant effect on reducing the quantity of UDMA release in the Filtek™ Bulk Fill composite and Bis-GMA, HEMA, and TEGDMA in the Dyract XP compomer ( p < 0.05 ). The restorative materials investigated here are not chemically stable after polymerization, and concentrations of eluted monomers may reach critical toxicity levels even after one restoration placement. Finishing and polishing procedures are mandatory to reduce residual monomers.

scholarly journals Ipsilateral and Contralateral Torque Responses to Bilateral and Unilateral Maximal, Fatiguing, Isokinetic Leg Extensions

2020 ◽  
Vol 8 (4) ◽  
pp. 25
Author(s):  
Tyler J. Neltner ◽  
John Paul V. Anders ◽  
Joshua L. Keller ◽  
Robert W. Smith ◽  
Terry J. Housh ◽  
...  
Keyword(s):  
Isometric Contraction ◽  
Repeated Measures ◽  
Central Fatigue ◽  
Peak Torque ◽  
Maximal Voluntary Isometric Contraction ◽  
Repeated Measures Anova ◽  
The Right ◽  
Post Hoc ◽  
Isokinetic Peak Torque

Background: Few studies have compared performance fatigability (PF) for bilateral versus unilateral isokinetic tasks. Objectives: The purpose of this study was to examine: Mode-specific testing responses to isokinetic fatigue, differences in PF between bilateral and unilateral leg extensions, and the effects of fatiguing, unilateral, dynamic leg extensions on contralateral isokinetic peak torque (PT) and maximal voluntary isometric contraction (MVIC). Methods: Eight men (mean ± SD: age= 22.5 ± 2.5 yr.) completed pre- and post-testing for PT and MVIC following 50 bilateral, unilateral right or left leg maximal, isokinetic leg extensions at 180°·s-1, on three separate days. Fatigue-induced decreases in PT and MVIC were used to quantify PF. The data were analyzed with a 4-way repeated measures ANOVA, follow up, and post-hoc analyses. Results: The results indicated that there were no differences (p > 0.05) in PF for the bilateral versus unilateral fatiguing tasks, decreases in PT (p < 0.001 - 0.016; d = 0.54 - 2.58) and MVIC (p < 0.001 - 0.006; η2p = 0.682 - 0.962) for the exercised legs during unilateral fatigue, and a contralateral increase (p = 0.007) in PT following the right leg fatiguing task. Conclusion: The results indicated that PT was more sensitive to fatiguing isokinetic tasks than was MVIC. In addition, there was a facilitation of PT in the contralateral leg following unilateral right leg fatigue. The differences in PT and MVIC testing may be attributable to the timing and/or relative contributions of peripheral and central fatigue.

Mineralized Plasmatic Matrix for Horizontal Ridge Augmentation in Anterior Maxilla with and without a Covering Collagen Membrane

2020 ◽  
Vol 14 (1) ◽  
pp. 743-751
Author(s):  
Ehab Abdelfadil ◽  
Wael Aboelmaaty
Keyword(s):  
Repeated Measures ◽  
T Test ◽  
Collagen Membrane ◽  
Anova Analysis ◽  
Repeated Measures Anova ◽  
Ridge Augmentation ◽  
Parametric Data ◽  
Student’S T ◽  
Post Hoc ◽  
Student’S T Test

Background: Mineralized Plasmatic Matrix [MPM] is a unique form of platelet rich fibrin that contains mineralized bone graft particles within a fibrin network. Aim: This study was conducted to evaluate horizontal ridge augmentation using MPM with and without a coverage membrane. Materials and Methods: Sixteen edentulous spaces were randomly divided into 2 equal groups. MPM was used for horizontal ridge augmentation with and without a covering collagen membrane (group 1 and 2, respectively). Cone Beam CT images were obtained preoperatively as well as 1 week and 4 months postoperatively to evaluate alveolar ridge and the resorption of the grafting material at 3 predetermined points along with the site where the future dental implant will be placed. Student’s t-test (Unpaired) was used for comparing two different groups with quantitative parametric data and student’s t-test (Paired) was used for comparing two related groups with quantitative parametric data while repeated measures ANOVA (Analysis of variance) followed by post-hoc Bonferroni was used for comparing more than two related groups with quantitative parametric data. Student’s t-test (Unpaired) was used for comparing two different groups with quantitative parametric data and student’s t-test (Paired) was used for comparing two related groups with quantitative parametric data while repeated measures ANOVA (Analysis of variance) followed by post-hoc Bonferroni was used for comparing more than two related groups with quantitative parametric data. Results: There was no statistically significant difference between the gained bone width in both groups. More but not statistically significant resorption was recorded in group 2. Conclusion: MPM can be successfully used for horizontal ridge augmentation without a barrier membrane.

Initial Evaluation of the LifeForce Yoga Program as a Therapeutic Intervention for Depression

2008 ◽  
Vol 18 (1) ◽  
pp. 49-57 ◽  
Author(s):  
Shannon Bennett ◽  
Amy Weintraub ◽  
Sat Bir Khalsa
Keyword(s):  
Repeated Measures ◽  
Self Report ◽  
Initial Training ◽  
Home Practice ◽  
Repeated Measures Anova ◽  
Symptoms Of Depression ◽  
Main Effect ◽  
Symptom Scores ◽  
Assessment Time ◽  
Post Hoc

There is a growing body of literature citing Yoga as an effective intervention for decreasing symptoms of depression. This naturalistic pilot study investigated the efficacy of the LifeForce Yoga Program in decreasing reported symptoms of depression and other mood symptoms. The sample consisted of 94 individuals who completed self-report questionnaire before participating in a five-day LifeForce Yoga training. 54 of these individuals completed the same questionnaire after two weeks of home practice following the training, and 33 participants completed these questionnaires two months after the initial training. Repeated measures ANOVA tests demonstrated a main effect for time, indicating that mean symptom scores decreased significantly across the assessment time points on nearly all of the outcome measures of interest. Post hoc t-tests showed that the statistically significant change occurred between Time 1 and Time 2, and was then largely maintained from Time 2 to Time 3. These results suggest that participation in a comprehensive Yoga program, designed specifically to address mood, can lead to decreased symptoms of depression and associated physical or mood states.

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