Anthropometric characteristics and physiological responses of high level swimmers and performance in 100 m freestyle swimming

2018 ◽  
pp. 3-7
Author(s):  
G. Rozi ◽  
V. Thanopoulos ◽  
N. Geladas ◽  
E. Soultanaki ◽  
M. Dopsaj
Keyword(s):  
Swimming Performance ◽  
Final Model ◽  
Sports Science ◽  
Physiological Variables ◽  
Multiple Stepwise Regression Analysis ◽  
Arm Span ◽  
Anthropometric Characteristics ◽  
And Performance ◽  
High Level ◽  
Selection Of

The effect of the anthropometric characteristics on performances has been the subject of many studies (Reilly, T., Bangsbo, J., & Franks, A. (2000). Anthropometric and physiological predispositions for elite soccer. Journal of Sports Science, 18(9), 669–683) but performance also depends on different physiological parameters. The aim of the present study is to define the anthropometric and physiological variables that best predict performance time of 100 m freestyle swimming. Twenty-five competitive male swimmers (age: 15 ± 1.2 years) participated in the research. Multiple stepwise regression analysis showed that arm span is the best predictor of 100 m freestyle swimming performance (r = 0.835). Arm span explains 68.5% of the variance of dependent variable (Adj R2: 0.685). In the final model, the variables that best describe 100 m freestyle swimming are the number of strokes of 100 m freestyle swimming, triceps skinfold, pelvis and shoulders width (Adj R2: 0.882). These findings confirm the importance of the anthropometric variables for swimming performance and could help coaches in the selection of high-level athletes.

scholarly journals Training Loads, Wellness And Performance Before and During Tapering for a Water-Polo Tournament

2019 ◽  
Vol 66 (1) ◽  
pp. 131-141
Author(s):  
Petros G. Botonis ◽  
Argyris G. Toubekis ◽  
Theodoros I. Platanou
Keyword(s):  
Muscle Soreness ◽  
Perceived Exertion ◽  
Swimming Performance ◽  
Training Load ◽  
Rating Of Perceived Exertion ◽  
Training Period ◽  
Training Strategy ◽  
Water Polo ◽  
And Performance ◽  
High Level

AbstractWe investigated the effectiveness of a short-duration training period including an overloaded (weeks 1 and 2) and a reduced training load period (weeks 3 and 4) on wellness, swimming performance and a perceived internal training load in eight high-level water-polo players preparing for play-offs. The internal training load was estimated daily using the rating of perceived exertion (RPE) and session duration (session-RPE). Perceived ratings of wellness (fatigue, muscle soreness, sleep quality, stress level and mood) were assessed daily. Swimming performance was evaluated through 400-m and 20-m tests performed before (baseline) and after the end of weeks 2 and 4. In weeks 3 and 4, the internal training load was reduced by 19.0 ± 3.8 and 36.0 ± 4.7%, respectively, compared to week 1 (p = 0.00). Wellness was improved in week 4 (20.4 ± 2.8 AU) compared to week 1 and week 2 by 16.0 ± 2.2 and 17.3 ± 2.9 AU, respectively (p =0.001). At the end of week 4, swimming performance at 400-m and 20-m tests (299.0 ± 10.2 and 10.2 ± 0.3 s) was improved compared to baseline values (301.4 ± 10.9 and 10.4 ± 0.4 s, p < 0.05) and the overloading training period (week 2; 302.9 ± 9.0 and 10.4 ± 0.4 s, p < 0.05). High correlations were observed between the percentage reduction of the internal training load from week 4 to week 1 (-25.3 ± 5.5%) and the respective changes in 20-m time (-2.1 ± 2.2%, r = 0.88, p < 0.01), fatigue perception (39.6 ± 27.1%), muscle soreness (32.5 ± 26.6%), stress levels (25.6 ± 15.1%) and the overall wellness scores (28.6 ± 21.9%, r = 0.74-0.79, p < 0.05). The reduction of the internal training load improved the overall perceived wellness and swimming performance of players. The aforementioned periodization approach may be an effective training strategy in the lead-up to play-off tournaments.

Anthropometric and Physiological Characteristics in Young Afro-Caribbean Swimmers: A Preliminary Study

2013 ◽  
Vol 8 (3) ◽  
pp. 271-278 ◽  
Author(s):  
Olivier Hue ◽  
Sophie Antoine-Jonville ◽  
Olivier Galy ◽  
Stephen Blonc
Keyword(s):  
Swimming Performance ◽  
Performance Testing ◽  
Physiological Characteristics ◽  
Jump Height ◽  
Anthropometric Parameters ◽  
Arm Span ◽  
Preliminary Study ◽  
And Performance ◽  
Competitive Swimmers ◽  
Energy Cost Of Swimming

The authors investigated the anthropometric and physiological characteristics of young Guadeloupian competitive swimmers in relation to swimming performance and compared the abilities of these children with those of the young white swimmers reported in the literature. All 2004 competitive swimmers between 10 and 14 y old (126 children, 61 boys and 65 girls, 12.0 ± 1.3 y) from Guadeloupe underwent anthropometric measurements and physiological and performance testing. Six boys on the French national swimming team are referred to hereafter as the 2011 elite subgroup. Anthropometric parameters, a jump-and-reach test, glide, and estimated aerobic power (eVO2max) were assessed in terms of swimming-performance analysis through a 400-m test. This study demonstrated that the Guadeloupian swimmers had more body fat than most age-matched white swimmers but had very poor hydrostatic lift; they had higher peak jump height and they swam as well as their white counterparts. The variability in 400-m performance between subjects was best described by glide, age, and eVO2max. Compared with the group of boys with the same age, the 2011 elite subgroup was significantly better for arm span, peak jump height, glide, and 400-m and 15-m performances. Further research is needed to investigate motor organization and energy cost of swimming in Afro-Caribbean swimmers.

scholarly journals Características antropométricas, composición corporal y somatotipo en deportistas de élite de salvamento (Anthropometric characteristics, body composition and somatotype in elite lifesaver)

Retos ◽  
2015 ◽  
pp. 66-70
Author(s):  
J. Arturo Abraldes ◽  
Nuria Rodríguez Suárez ◽  
Carmen Ferragut Fiol ◽  
María Helena Vila Suárez
Keyword(s):  
Body Composition ◽  
Analysis Of Variance ◽  
Swimming Performance ◽  
Physical Characteristics ◽  
Male And Female ◽  
Arm Span ◽  
Anthropometric Characteristics ◽  
Las Mujeres ◽  
Post Hoc ◽  
Anthropometric Profile

El objetivo de este trabajo es triple: 1) Describir la estructura antropométrica, composición corporal y somatotipo de los mejores deportistas de salvamento. 2) Describir y comparar las características antropométricas de los deportistas de salvamento en función de sus especialidades, y 3) Comparar a los mejores deportistas de salvamento de Galicia con respecto a los especialistas de salvamento acuático del panorama nacional. La muestra empleada en este estudio fueron 85 deportistas de élite salvamento deportivo, de ellos 51 fueron hombres y 34 fueron mujeres. Los hombres presentaron una media de edad de 20.8±3.0 años, 74.9±8.4kg, 179.8±7.1cm de altura y 185.2±9.8cm de envergadura. Las mujeres presentaron una media de edad de 19.8±2.8 años, 60.4±7.4kg, 164.9±6.4cm de altura y 166.4±9.9cm de envergadura. Para el estudio se valoró el peso, la altura, la envergadura, cinco diámetros y cinco perímetros, calculándose el porcentaje graso, muscular y el somatotipo. Se aplicó un análisis de la varianza (ANOVA), con un post hoc de Tukey para analizar las diferencias entre categorías. Los deportistas de salvamento presentan un somatotipo mesomorfo balanceado en los varones y meso-endomórfico para las mujeres, siendo la mesomorfia el valor predominante en ambos casos. Existen diferencias entre la especialidad de playa y la de piscina. Los deportistas de selección gallega presentan un perfil antropométrico diferente al de los especialistas de piscina del panorama nacional.Palabras clave: deporte, playa, piscina, natación, rendimiento, perfil deportivo.Abstrac: The aim of the study was threefold: 1) To describe the anthropometric profile, body composition and somatotype of the best sport lifesaving athletes 2) To describe and compare physical characteristics of the sport lifesaving athletes by discipline and 3) To compare the best Galician sport lifesaving athletes with the rest of Spanish sport lifesaving athletes. 85 elite sport lifesavers were recruited for the study, 51 men and 34 women. Physical characteristics of the sample were 20.8±3.0 years; 74.9±8.4kg and 179.8±7.1cm height and 185.2±9.8cm of arm span for male and 19.8±2.8 years, 60.4±7.4kg of weight, 164.9±6.4cm of height and 166.4±9.9cm of arm span for female. Additionally, 5 body girths and 5 skeletal breadths, somatotype, fat and muscle percentage were analysed. A one-way analysis of variance (ANOVA) and a Tukey post hoc test were used to determine if significant differences existed in the anthropometric profile among disciplines. Male sport lifesavers athletes show a balanced mesomorph and female sport lifesavers show a mesomorphic endomorph somatotype Male and female show predominance in mesomorph component. Our data suggest that there are differences between beach discipline and pool discipline. Galician sport lifesavers show differences in anthropometric profile with national pool specialist.Key words: sport, beach, pool, swimming, performance, sport profile.

scholarly journals The reliability of physiological and performance data obtained during a long distance simulated triathlon laboratory test

2019 ◽  
Vol 8 (3) ◽  
pp. 25-32
Author(s):  
Kate Margaret Luckin
Keyword(s):  
Blood Lactate ◽  
Perceived Exertion ◽  
Correlation Coefficients ◽  
Rating Of Perceived Exertion ◽  
Long Distance ◽  
Task Representation ◽  
Intra Class Correlation ◽  
Physiological Variables ◽  
And Performance ◽  
High Level

The aim of this study was to investigate the reliability of a newly developed long distance (LD) simulated triathlon for testing performance and physiological changes in LD triathletes. Ten trained LD triathletes (mean ± standard deviation: age 34.1 ± 5.0 years, body mass 69.07 ± 13.89 kg) completed two separate trials of a simulated LD triathlon consisting of a 1500 m swim, a 60 minute cycle at 60% of power at VO2max and a 20 minute run at 70% of velocity at VO2max. Performance (time, pace, power and rating of perceived exertion) and physiological (economy of movement (oxygen cost and energy consumption), blood lactate and heart rate)variables were measured throughout the simulated LD triathlon. Coefficient of variations (CV %) and intra class correlation coefficients (ICC) were calculated to determine reliability. The current study displayed a high level of reliability, with moderate to excellent ICC measurements for performance and physiological variables (ICC 0.62 – 0.99). All physiological variables, except blood lactate, demonstrated CV values < 10%. In conclusion, the newly developed LD simulated triathlon has a high level of task representation for LD triathletes and can accurately assess performance changes in a research setting.

scholarly journals A State of Art Survey for OS Performance Improvement

2018 ◽  
Vol 6 (3) ◽  
pp. 118-123 ◽  
Author(s):  
Lailan M. Haji ◽  
Subhi R.M. Zeebaree ◽  
Karwan Jacksi ◽  
Diyar Q. Zeebaree
Keyword(s):  
Performance Improvement ◽  
Critical Issue ◽  
The Past ◽  
Performance Requirements ◽  
And Performance ◽  
Measurement And Evaluation ◽  
The Stability ◽  
High Level ◽  
Multiple Metrics ◽  
Selection Of

Through the huge growth of heavy computing applications which require a high level of performance, it is observed that the interest of monitoring operating system performance has also demanded to be grown widely. In the past several years since OS performance has become a critical issue, many research studies have been produced to investigate and evaluate the stability status of OSs performance. This paper presents a survey of the most important and state of the art approaches and models to be used for performance measurement and evaluation. Furthermore, the research marks the capabilities of the performance-improvement of different operating systems using multiple metrics. The selection of metrics which will be used for monitoring the performance depends on monitoring goals and performance requirements. Many previous works related to this subject have been addressed, explained in details, and compared to highlight the top important features that will very beneficial to be depended for the best approach selection.

scholarly journals The design and Performance of the Atlas Inner Detector Trigger in High Pileup Collisions at 13 Tev at the Large Hadron Collider

2019 ◽  
Vol 214 ◽  
pp. 01051
Author(s):  
Julie Kirk
Keyword(s):  
Data Storage ◽  
Hadron Collider ◽  
Level Trigger ◽  
Physics Program ◽  
Wide Range ◽  
High Interaction ◽  
Vital Component ◽  
And Performance ◽  
High Level ◽  
Selection Of

The design and performance of the ATLAS Inner Detector (ID) trigger algorithms running online on the High Level Trigger (HLT) processor farm for 13 TeV LHC collision data with high pileup are discussed. The HLT ID tracking is a vital component in all physics signatures in the ATLAS trigger for the precise selection of the rare or interesting events necessary for physics analysis without overwhelming the offline data storage in terms of both size and rate. To cope with the high interaction rates expected in the 13 TeV LHC collisions, the ID trigger was redesigned during the 2013-15 long shutdown. The performance of the ID trigger in Run 2 data from 13 TeV LHC collisions has been excellent and exceeded expectations, even at the very high interaction multiplicities observed at the end of data-taking in 2017. The detailed efficiencies and resolutions of the ID trigger in a wide range of physics signatures are presented for the Run 2 data. The superb performance of the ID trigger algorithms in these extreme pileup conditions demonstrates how the ID tracking continues to lie at the heart of the trigger performance to enable the ATLAS physics program, and will continue to do so in the future.

scholarly journals Design Time Optimization for Hardware Watermarking Protection of HDL Designs

2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
E. Castillo ◽  
D. P. Morales ◽  
A. García ◽  
L. Parrilla ◽  
E. Todorovich ◽  
...  
Keyword(s):  
Digital Signature ◽  
Computation Time ◽  
Original System ◽  
Combinational Logic ◽  
Time Optimization ◽  
Ip Cores ◽  
And Performance ◽  
High Level ◽  
Automated Tool ◽  
Selection Of

HDL-level design offers important advantages for the application of watermarking to IP cores, but its complexity also requires tools automating these watermarking algorithms. A new tool for signature distribution through combinational logic is proposed in this work. IPP@HDL, a previously proposed high-level watermarking technique, has been employed for evaluating the tool. IPP@HDL relies on spreading the bits of a digital signature at the HDL design level using combinational logic included within the original system. The development of this new tool for the signature distribution has not only extended and eased the applicability of this IPP technique, but it has also improved the signature hosting process itself. Three algorithms were studied in order to develop this automated tool. The selection of a cost function determines the best hosting solutions in terms of area and performance penalties on the IP core to protect. An 1D-DWT core and MD5 and SHA1 digital signatures were used in order to illustrate the benefits of the new tool and its optimization related to the extraction logic resources. Among the proposed algorithms, the alternative based on simulated annealing reduces the additional resources while maintaining an acceptable computation time and also saving designer effort and time.

Patterns of achievement-motivated behavior and performance as predictors for future success in rowing: A person-oriented study

2020 ◽  
pp. 174795412095365
Author(s):  
Michael J Schmid ◽  
Achim Conzelmann ◽  
Claudia Zuber
Keyword(s):  
National Level ◽  
Psychological Characteristics ◽  
Performance Variables ◽  
The Past ◽  
Motivated Behavior ◽  
Talent Selection ◽  
Future Success ◽  
And Performance ◽  
High Level ◽  
Selection Of

Talent selection in rowing is often solely based on anthropometric and performance variables, even though psychological characteristics are considered to be important contributors to successful talent development. Because multidimensional talent models and holistic theories represent the state-of-the-art in talent research, we aimed to find patterns connecting psychological and performance variables to future success in rowing. Therefore, 22 coaches rated the achievement-motivated behavior represented by the variables proactivity, ambition and commitment of 65 competitive to high-level athletes ( Mage = 17.2 ± 1.55 years) for the past year (t1). Additionally, the athletes performed several 2,000 m ergometer tests during that same period. At t2 (30 months later), each rower’s performance was evaluated based on the success at different competitions. To examine the results, we used the person-oriented Linking of Clusters after removal of a Residue (LICUR) method to identify the relationships between the achievement-motivated behavior and ergometer results at t1 and the success at t2. The rowers could be assigned to five clusters. Although the highly motivated rowers were not the fastest on the ergometer at t1, they were more likely to be in highest performance level at t2 compared to the other clusters (OR = 3.5, p < .05). By contrast, all the ambitionless rowers and unmotivated rowers were either racing at national level or had dropped out. In conclusion, certain patterns of achievement-motivated behavior and current performance are associated with future success (30 months later). The consideration of achievement-motivated behavior in the selection of rowers seems promising in this context.

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