scholarly journals Influence of Biomechanical Parameters on Performance in Elite Triathletes along 29 Weeks of Training

2021 ◽  
Vol 11 (3) ◽  
pp. 1050
Author(s):  
Javier Olaya-Cuartero ◽  
Roberto Cejuela

The purpose of the study was to assess how the modification of biomechanical parameters influences the performance of elite triathletes. Four elite international triathletes participated in this study. The anthropometric method ISAK was used to estimate the triathlete’s body composition. For the physiological and biomechanical parameters, a running test (RT) was performed on an outdoor track, with the participants wearing the Stryd Summit Footpod (Stryd, Boulder, CO, USA). The pre-test took place in the last week of an adaptation mesocycle; then, after 29 weeks of training, the triathletes performed the post-test. A within-subject repeated measures design was used to assess changes in the anthropometric, physiological and biomechanical parameters. Pearson correlations (r) were applied to determine the relationship between the performance at different intensities (VT1, VT2 and MAS) and the biomechanical parameters. Concerning the anthropometric characteristics, significant differences were found in the summation (Σ) of skinfold (8.1 cm); as a consequence, the % fat mass was reduced (1.2%). Significant differences were found in the physiological values (VO2 and % VO2max), speed and biomechanical parameters, such as step length normalized, to the specific physiological intensity of the short-distance triathlon, the VT2. Therefore, performance improvement in the running segment could not only be explained by physiological changes, but also by biomechanical parameters changes.

2006 ◽  
Vol 15 (4) ◽  
pp. 299-311 ◽  
Author(s):  
Aimee E. Roth ◽  
Michael G. Miller ◽  
Marc Ricard ◽  
Donna Ritenour ◽  
Brenda L. Chapman

Context:It has been theorized that aquatic balance training differs from land balance training.Objective:To compare the effects of balance training in aquatic and land environments.Design:Between-groups, repeated-measures design.Setting:Biomechanics laboratory and pool.Participants:24 healthy subjects randomly assigned to aquatic (n = 8), land (n = 10), or control (n = 6) groups.Intervention:Four weeks of balance training.Main Outcome Measures:Balance was measured (pre, mid, post, follow-up). COP variables: radial area, y range, x range in single leg (SL), tandem (T), single leg foam (SLF), and tandem form (TF) stance.Results:A significant condition × time interaction for x range was found, with improvements for SL, SLF, and TF. Radial area improved, with post-test 1.01 ± .23 cm2and follow-up 1.06 ± .18 cm2significantly lower than pretest 1.18 ± .23 cm2. Y range significantly improved, with posttest (4.69 ± 1.02 cm2) lower than pretest (5.89 ± 1.26 cm2). The foam conditions (SLF & TF) were significantly different from non-foam conditions (SL & T) for all variables.Conclusions:Results of this study show that balance training can effectively be performed in both land and aquatic environments.


Aula Abierta ◽  
2017 ◽  
Vol 46 (2) ◽  
pp. 73 ◽  
Author(s):  
Amaya Cepa Serrano ◽  
Davinia Heras Sevilla ◽  
María Fernández-Hawrylak

RESUMENEsta investigación está enmarcada dentro del ámbito de la Educación Emocional en edades tempranas. El objetivo de este estudio es comprobar la eficacia del Programa EMO-ACCIÓN de educación emocional, valorando su impacto en niños de 4 a 5 años con necesidades específicas de apoyo educativo. Para este trabajo se ha seleccionado un grupo de 22 alumnos/as de Educación Infantil con estas necesidades, de una muestra de 123 alumnos/as matriculados en un colegio ordinario preferente en limitaciones físicas. Se utiliza un diseño de medidas repetidas pre-test/post-test con grupos experimental (12 alumnos) y control (10 alumnos). Para ello, se administra antes y después de la intervención educativa la escala RRER para la medición de competencias emocionales. Los resultados muestran que los alumnos que participaron en el programa educativo incrementan de forma significativa sus competencias emocionales, encontrándose una clara mejora en las cinco dimensiones que se evalúan en la escala. El programa favorece el desarrollo de las competencias emocionales, tanto para alumnado que presenta o no dificultades educativas.Palabras Clave: competencias emocionales, educación infantil, alumnado con necesidades específicas de apoyo educativo, educación inclusiva, educación emocional.ABSTRACTThis research is framed within the emotional education at early childhood. The aim of this study is to test the efficiency of the EMO-ACCIÓN Program of emotional education, assessing its impact in 4-5 years old children with special educational needs. We selected 22 children within a sample of 123 schooled in a preferred ordinary center in physical limitations. A repeated measures design pretest/posttest was used, with experimental (12 children) and control (10 children) groups. In order to measure the emotional competences, the Recognition, Regulation, Empathy and Problem Solving Scale (RRER) was administered before and after the educational intervention. The outcomes show that the children who participated in the educational program increase their emotional competences significantly, with a clear improvement in the five dimensions that the scale evaluate. The program stimulates the development of emotional competences, both in the children with or without educational needs.Keywords: emotional competences, child education, students with special, educational needs, inclusive education, emotional education.


2017 ◽  
Vol 26 (1) ◽  
pp. 69-75
Author(s):  
Shaheen Islam ◽  
Roufun Naher

The present study examined the effectiveness of nonviolent communication (NVC) workshop on marital adjustment. The hypothesis was receiving nonviolent communication (NVC) workshop has positive impact on marital adjustment. The independent variable was NVC workshop and the dependent variable was marital adjustment score. For conducting this research, repeated measures design was followed and 20 Bangladeshi married people participated in it. The results have shown that there was a statistically significant difference (F = 16.790, p < 0.05) in marital adjustment score of experimental group over the three time periods and pairwise comparisons indicate that there was significant difference between pretest and post-test and also between pretest and follow- up test at the 0.05 level. Results also have shown that, there was statistically significant difference of marital adjustment score between experimental and control group in posttest (t = 4.276, p < 0.05) and follow-up test (t = 4.176, p < 0.05). Thus, after receiving NVC workshop the marital adjustment score of experimental group increased significantly (F = 16.79, p < 0.001) in post-test measure and also remain constant in follow-up, whereas the marital adjustment score of control group had no significant change. This implied a significant positive impact of participation in NVC workshop on marital adjustment. Dhaka Univ. J. Biol. Sci. 26(1): 69-75, 2017 (January)


1968 ◽  
Vol 22 (3_suppl) ◽  
pp. 1081-1090 ◽  
Author(s):  
Robert D. Hoge ◽  
John T. Lanzetta

The experiment was designed to examine the effects on subjective uncertainty of variations in response uncertainty and amount of information and to explore the relationship between two indices of subjective uncertainty, confidence in decision and decision time. 18 Ss were exposed to a 4-factor repeated measures design involving 6 levels of response uncertainty, 2 levels of ‘unknown information’, 2 levels of ‘known information’, and 2 orders of problem presentation. Confidence in decision was significantly affected by response uncertainty, ‘unknown information’, ‘known information’, and the interaction of the 2 information conditions. Decision time was significantly affected by response uncertainty and ‘known information.’


2013 ◽  
Vol 10 (4) ◽  
pp. 488-495 ◽  
Author(s):  
Neha Gothe ◽  
Matthew B. Pontifex ◽  
Charles Hillman ◽  
Edward McAuley

Background:Despite an increase in the prevalence of yoga exercise, research focusing on the relationship between yoga exercise and cognition is limited. The purpose of this study was to examine the effects of an acute yoga exercise session, relative to aerobic exercise, on cognitive performance.Methods:A repeated measures design was employed where 30 female college-aged participants (Mean age = 20.07, SD = 1.95) completed 3 counterbalanced testing sessions: a yoga exercise session, an aerobic exercise session, and a baseline assessment. The flanker and n-back tasks were used to measure cognitive performance.Results:Results showed that cognitive performance after the yoga exercise bout was significantly superior (ie, shorter reaction times, increased accuracy) as compared with the aerobic and baseline conditions for both inhibition and working memory tasks. The aerobic and baseline performance was not significantly different, contradicting some of the previous findings in the acute aerobic exercise and cognition literature.Conclusion:These findings are discussed relative to the need to explore the effects of other nontraditional modes of exercise such as yoga on cognition and the importance of time elapsed between the cessation of the exercise bout and the initiation of cognitive assessments in improving task performance.


2021 ◽  
Vol 4 ◽  
pp. 205920432098638
Author(s):  
David Hammerschmidt ◽  
Clemens Wöllner ◽  
Justin London ◽  
Birgitta Burger

Our perception of the duration of a piece of music is related to its tempo. When listening to music, absolute durations may seem longer as the tempo—the rate of an underlying pulse or beat—increases. Yet, the perception of tempo itself is not absolute. In a study on perceived tempo, participants were able to distinguish between different tempo-shifted versions of the same song (± 5 beats per minute (BPM)), yet their tempo ratings did not match the actual BPM rates; this finding was called tempo anchoring effect (TAE). In order to gain further insights into the relation between duration and tempo perception in music, the present study investigated the effect of musical tempo on two different duration measures, to see if there is an analog to the TAE in duration perception. Using a repeated-measures design, 32 participants (16 musicians) were randomly presented with instrumental excerpts of Disco songs at the original tempi and in tempo-shifted versions. The tasks were (a) to reproduce the absolute duration of each stimulus (14–20 s), (b) to estimate the absolute duration of the stimuli in seconds, and (c) to rate the perceived tempo. Results show that duration reproductions were longer with faster tempi, yet no such effect was found for duration estimations. Thus, lower-level reproductions were affected by the tempo, but higher-level estimations were not. The tempo-shifted versions showed no effect on both duration measures, suggesting that the tempo difference for the duration-lengthening effect requires a difference of at least 20 BPM, depending on the duration measure. Results of perceived tempo replicated the typical rating pattern of the TAE, but this was not found in duration measures. The roles of spontaneous motor tempo and musical experience are discussed, and implications for future studies are given.


2020 ◽  
Vol 34 (4) ◽  
pp. 284-296
Author(s):  
Allison R. Fleming ◽  
Brian N. Phillips ◽  
Elizabeth H. Gilfillan ◽  
Joy Gray ◽  
Megan McCloskey

PurposeThis study was a pilot of a brief psychological capital (PsyCap) intervention with a sample of transition age youth with disabilities (N = 24) in a school setting. Substantial evidence supports the relationship between PsyCap and employment outcomes. Transition age youth with disabilities are an important target for pre-employment counseling interventions due to a lack of parity in postsecondary outcomes. Researchers have successfully boosted PsyCap in adult samples using brief interventions.MethodsPsyCap and vocational outcome expectancy (VOE) were compared in a repeated measures design.ResultsPsyCap and VOE, and PsyCap and school performance were significantly correlated in our sample, but no differences were observed in PsyCap or VOE postintervention.ConclusionAs the first known effort to develop a PsyCap driven pre-employment intervention for transition age youth with disabilities, our experience and findings provide several implications for practice and future research. Aspects of the intervention to be modified for future efforts are presented.


2003 ◽  
Vol 12 (1) ◽  
pp. 54-66 ◽  
Author(s):  
Joshua M. Drouin ◽  
Peggy A. Houglum ◽  
David H. Perrin ◽  
Bruce M. Gansneder

Objective:To determine the relationship between weight-bearing (WB) and non-weight-bearing (NWB) joint reposition sense (JRS) and a functional hop test (FH) and to compare performance on these parameters between athletes and nonathletes.Design:Repeated-measures ANOVA and Pearson correlations.Setting:Research laboratory.Participants:40 men (age = 20.8 ± 1.7 y; ht = 176.9 ± 5.8 cm; wt = 82.6 ± 9.5 kg): 20 lacrosse players and 20 nonathletes.Main Outcome Measures:Ability to actively reproduce 30° of knee flexion in the WB and NWB conditions and functional performance on a single-leg crossover-hop test.Results:No significant correlations were observed between JRS and FH in athletes and nonathletes. No significant differences were observed between athletes and nonathletes in JRS. All participants were significantly more accurate at WB than at NWB JRS.Conclusions:There appears to be no relationship between WB or NWB JRS and functional performance, regardless of one’s physical activity level


2008 ◽  
Vol 32 (4) ◽  
pp. 348-358 ◽  
Author(s):  
Michelle Slone ◽  
Anat Shoshani

A paradigm conceptualizing resilience as factors moderating between political violence exposure and psychological distress administered in a 7-year research project yielded a profile of factors promoting Israeli children's coping in conflict conditions. Three factors — social support mobilization, selfefficacy, and meaning attribution — were incorporated into a school-based primary intervention program. In a repeated measures design, the study assessed pre to post-test modifications in the three resilience factors and psychological distress in a primary and control intervention condition and the interaction of actual political violence exposure on distress reduction. Results validated modification only of the mobilization of support factor, but nonetheless confirmed the primary program's efficacy in moderating psychological distress particularly among children with low actual political violence exposure, who showed greater distress increases in the control condition. Findings reinforce the educational system's role in promoting resilience among children in conflict environments.


2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Zazli Lily Wisker

Purpose This study aims to explore how consumers process and respond to fake news on halal food in a Muslim-majority country. The study hypothesises that fake news that violates one’s moral code could induce anger resulting in brand hate. Religiosity plays a role as a moderating variable for the relationship. Design/methodology/approach Data were collected in two studies using quasi-experiment repeated measures factorial design, 2 × 2 between subjects. In Study 1, 219 participated, whereas in Study 2, a total of 173 was recruited for the experiment. The study uses one-way repeated measures design ANOVA and MEMORE to test the effects of moderation for repeated measures. Findings The findings indicate that fake news that violates one’s moral code, belief and values could induce anger and brand hate. Religiosity moderates the relationship between anger and brand hate Research limitations/implications The study’s limitations include the limited dimension measured for religiosity and brand hate. Originality/value The study of brand hate as opposed to brand love is relatively scarce. This study has observed how fake news that violates one’s moral code is detrimental to the brand, which in turn induces hate. Marketing managers have to be cautious in marketing their products in more religious countries. Besides, they have to be proactive in combating fake news that might tarnish their brand.


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