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This study aims to analyze the effects of a training program based on practice variability on the speed and accuracy of the tennis forehand approach to the net shot. The study sample consisted of 35 players of both genders, 22 men and 13... more
This study aims to analyze the effects of a training program based on practice variability on the speed and accuracy of the tennis forehand approach to the net shot. The study sample consisted of 35 players of both genders, 22 men and 13 women (age 44 ± 10.9 years, height 1.73 ± 0.8 cm, and weight 74.7 ± 8.4 kg). Players were randomly distributed into two groups (control group = 18 and experimental group = 17). Both training groups worked a total volume of 4 weeks, seven sessions, and 15 min per session of forehand approach shot. Control group performed traditional training while experimental group trained with variability using wristband weights. The data obtained showed a large Group × Time interaction in the accuracy of the forehand approach shot, F(1, 16) = 28.034, p < .001, η2 = .637. Only the experimental group increased significantly in the accuracy after the program (51.4%, effect size = 1.3, p < .001), while no changes were achieved regarding hitting speed (1.2%, effe...
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Purpose: Evaluate the effects of 6 weeks of specific-joint isometric strength training on serve velocity (SV), serve accuracy (SA), and force–time curve variables. Methods: Sixteen young competition tennis players were divided into an... more
Purpose: Evaluate the effects of 6 weeks of specific-joint isometric strength training on serve velocity (SV), serve accuracy (SA), and force–time curve variables. Methods: Sixteen young competition tennis players were divided into an intervention (n = 10) or control group (n = 6). SV, SA, maximal voluntary isometric contraction, peak rate of force development, rate of force development, and impulse (IMP) at different time frames while performing a shoulder internal rotation (SHIR) or flexion were tested at weeks 0, 3, and 6. Results: The intervention group showed significant increases in SV from pretest to posttest (7.0%, effect size [ES] = 0.87) and no variations in SA. Moreover, the intervention group showed significant increases from pretest to posttest in shoulder-flexion rate of force development at 150 (30.4%, ES = 2.44), 200 (36.5%, ES = 1.26), and 250 ms (43.7%, ES = 1.67) and in SHIR IMP at 150 (35.7%, ES = 1.18), 200 (33.4%, ES = 1.19), and 250 ms (35.6%, ES = 1.08). Furt...
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Purpose: To evaluate changes in physical performance indicators after executing a flywheel or machine-based neuromuscular training program in young female tennis players. Methods: Twenty-four players were divided into a machine-based... more
Purpose: To evaluate changes in physical performance indicators after executing a flywheel or machine-based neuromuscular training program in young female tennis players. Methods: Twenty-four players were divided into a machine-based group (MG), flywheel group (FG), and control group. Countermovement jump (CMJ), sprint time (5, 10, and 15 m), change-of-direction (COD) performance (right and left), medicine-ball throws (overhead, forehand, and backhand), and serve velocity were included as tests at baseline, week 4, and week 8. Results: Both MG and FG largely improved from baseline to weeks 4 and 8 of training in CMJ (11.6, 10.6%; effect size [ES] = 1.24, 1.95). Also, sprint time 5 m and 10 m, COD performance-right, and COD performance-left improved moderately to very largely at week 4 in MG (−5.0% to −6.2%; ES = −1.79 to −4.19) and FG (−2.9% to −5.1%; ES = −1.13 to −1.64), respectively. Regarding medicine-ball throw, only FG improved moderately to very largely from weeks 4 to 8 in...
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<p>Schematic setting for the specific endurance field test [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0131304#pone.0131304.ref015" target="_blank">15</a>].</p
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The aims of this study were (i) to describe the relative intensity of simulated tennis play based on the cumulative time spent in three metabolic intensity zones, and (ii) to determine the rela-tionships between this play intensity... more
The aims of this study were (i) to describe the relative intensity of simulated tennis play based on the cumulative time spent in three metabolic intensity zones, and (ii) to determine the rela-tionships between this play intensity distribution and the aerobic fitness of a group of competi-tive players. 20 male players of advanced to elite level (ITN) performed an incremental on-court specific endurance tennis test to exhaustion to determine maximal oxygen uptake (VO2max) and the first and second ventilatory thresholds (VT1, VT2). Ventilatory and gas exchange parameters were monitored using a telemetric portable gas analyser (K4 b2, Cosmed, Rome, Italy). Two weeks later the participants played a simulated tennis set against an opponent of similar level. Intensity zones (1: low, 2: moderate, and 3: high) were delimited by the individual VO2 values corresponding to VT1 and VT2, and expressed as percentage of maximumVO2 and heart rate. When expressed relative to VO2max, percentage of p...
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Osgood-Schlatter disease is the most common osteochondritis of the lower limb in sport-practicing children and adolescents. Its manifestation usually coincides with the appearance of the secondary ossification center of the tibia and is... more
Osgood-Schlatter disease is the most common osteochondritis of the lower limb in sport-practicing children and adolescents. Its manifestation usually coincides with the appearance of the secondary ossification center of the tibia and is linked to the practice of sports with an explosive component. In the present study, a review of the factors related to its appearance, diagnosis and treatment was carried out. Its appearance seems to be multifactorial and related to multiple morphological, functional, mechanical and environmental factors. Given all the above, risk factor reduction and prevention seem the most logical strategies to effectively prevent the appearance of the condition. In addition, it is essential to create prevention programs that can be objectively assessed and would allow to stop the progress of the pathology, particularly in those sports where high forces are generated on the insertion zone of the patellar tendon at sensitive ages. More studies are needed to clarify...
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Despite the importance of doubles tennis, there is little research on this modality of the game, especially as per women play. The aim of this study was to analyse the structural variables and the way points ended in women's doubles,... more
Despite the importance of doubles tennis, there is little research on this modality of the game, especially as per women play. The aim of this study was to analyse the structural variables and the way points ended in women's doubles, as well as to observe the differences between surfaces and between winning and losing teams. Twenty-one WTA doubles matches from three Grand Slams played on three different surfaces were analysed. Players played 2.0 ± 0.3 sets, 19.9 ± 3.2 games, 130.4 ± 25.3 points, 0.2 ± 0.6 tie breaks per match (PM), 9.5 ± 1.0 games and 62.6 ± 7.9 points per set, and 6.6 ± 0.6 points per game (PG). 33.5% of the points ended with a winner (Wn), 43.6% with a forced error (FE) and 22.8% with an unforced error (UE), with the Wn shot being the variable that most discriminated between winner and loser teams. It was also shown that the way more points were finished was with FE, followed by Wn and UE. There were no significant differences between surfaces in structural va...
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The goal of this study was to investigate side-to-side differences and asymmetries regarding muscle characteristics in young tennis players. Thirty-four participants performed contractile property measurements (stiffness, tone, elasticity... more
The goal of this study was to investigate side-to-side differences and asymmetries regarding muscle characteristics in young tennis players. Thirty-four participants performed contractile property measurements (stiffness, tone, elasticity and time to relaxation) on the dominant and non-dominant extremities including nine muscle groups involved in the kinetic chain of main tennis strokes. Significant differences (p≤0.05) and small-to-moderate effect sizes for greater stiffness and tone were found for the dominant biceps femoris (-11.1% and -5.6%; ES=0.53 and 0.54) and the non-dominant vastus medialis (5.4% and 3.2%; ES=-0.33 and -0.41), while greater tone was present in the non-dominant pectoralis major (4.0%; ES=-0.56). Time to relaxation was increased in the dominant biceps femoris (10.3%; ES=-0.58), the non-dominant pectoralis major (5.1%; ES=-0.56) and the gastrocnemius (9.1%; ES=-0.5). The non-dominant infraspinatus and dominant rectus abdominis showed greater elasticity than co...
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Padel is a complex sport within which performance relies on the interrelation of multiple factors such as physiological and physical capacities, psychological skills, and tactical and technical knowledge. Padel match involves intermittent... more
Padel is a complex sport within which performance relies on the interrelation of multiple factors such as physiological and physical capacities, psychological skills, and tactical and technical knowledge. Padel match involves intermittent whole-body efforts, evidenced by a large number of strokes and repeated high-intensity running actions such as accelerations, decelerations and changes of direction. Due to its recent creation, little is known about the activity and energy demands of padel match play. The purpose of the present study was to systematically review physiological demands of padel match play by assessing parameters related to external load, such as notational analysis or time-motion studies, and internal load through the analysis of physiological responses during the match. The systematic review process was conducted in accordance with the PRISMA guidelines. The electronic databases PubMed, Scopus and SportDiscus were searched using: (“padel” OR “pádel” OR “paddle tenni...
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Los objetivos del presente estudio fueron analizar las diferencias entre las autopercepciones de las conductas de liderazgo preferido y percibido en jugadores de balonmano de élite en dos momentos diferenciados de la temporada.... more
Los objetivos del presente estudio fueron analizar las diferencias entre las autopercepciones de las conductas de liderazgo preferido y percibido en jugadores de balonmano de élite en dos momentos diferenciados de la temporada. Paralelamente analizar las modificaciones existentes en las conductas en el transcurso de un periodo competitivo. La muestra estuvo compuesta por un total de 71 jugadores profesionales a los cuales se les administraron los cuestionarios Leadership Scale for Sport (LSS1 y LSS2). Los resultados mostraron diferencias significativas entre la conducta preferida y percibida en todas las conductas estudiadas a excepción de la democrática en los dos momentos observados de la temporada y por otro lado se observaron diferencias significativas entre la conducta preferida (pre-post) y la percibida (pre-post) en todas las conductas estudiadas. Concluimos que las autopercepciones de los jugadores sobre su entrenador difieren entre lo que prefieren y lo que perciben a lo la...
Research Interests: Anthropometry and Elite
This study aimed to analyze the effect of a variable practice training in the double wall right forehand by using wrist weights. Thirty-four experienced padel players participated in this study. Players were randomly distributed in two... more
This study aimed to analyze the effect of a variable practice training in the double wall right forehand by using wrist weights. Thirty-four experienced padel players participated in this study. Players were randomly distributed in two groups (control group [CG] and training group [TG]). The TG performed 1 month of variable training, induced by weighted wrist bands, twice a week, with the same number of sessions and volume of training as the CG. TG obtained significant difference in posttest measurements (effect size = 0.437) in terms of the number of successful shots compared to CG (effect size = 0.027). These findings showed a significant effect of the TG with respect to the CG. Results reinforce the role of variability in the exploration and reinforcement of motor learning.
Research Interests: Motor Control and Wrist
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This study aims to determine possible associations between strength parameters, injury rates, and performance outcomes over six seasons in professional basketball settings. Thirty-six male professional basketball players [mean ± standard... more
This study aims to determine possible associations between strength parameters, injury rates, and performance outcomes over six seasons in professional basketball settings. Thirty-six male professional basketball players [mean ± standard deviation (SD): age, 30.5 ± 4.7 years; height, 199.5 ± 9.5 cm; body mass, 97.9 ± 12.9 kg; BMI 24.6 ± 2.5 kg/m2] participated in this retrospective observational study, conducted from the 2008–09 to the 2013–14 season. According to their epidemiological records, each player followed an individual plan designed within different strength training programs: Functional (n = 16), Eccentric (n = 8), or Resistance (n = 12). Seven hundred and fourteen valid records were obtained from 170 individual strength tests during 31 sessions. Tests performed were leg press, squat, and jerk. Parameters recorded were force, power, velocity, peak velocity, and time to peak velocity for strength; time loss injury and muscle injury for injury rate; and games won, games los...
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espanol: El objetivo del presente estudio fue analizar los cambios de autopercepcion de las cinco dimensiones de la escala de Liderazgo de Chelladurai durante un periodo competitivo en entrenadores de balonmano. La muestra estuvo formada... more
espanol: El objetivo del presente estudio fue analizar los cambios de autopercepcion de las cinco dimensiones de la escala de Liderazgo de Chelladurai durante un periodo competitivo en entrenadores de balonmano. La muestra estuvo formada por 15 entrenadores de la Liga espanola (ASOBAL) a los que se les administro el Cuestionario LSS3 (Leadership Scale for Sports) de Chelladurai. El registro se realizo antes y despues de un periodo de competicion de cinco meses con la intencion de comparar los efectos del periodo competitivo. Por otro lado, tambien se valoro el efecto de la variable expectativas de clasificacion sobre la autopercepcion de los entrenadores. Los resultados mostraron una disminucion significativa en la dimension de conducta Democratica. Los entrenadores que cumplen con sus expectativas tienen un aumento significativo en los valores de “feedback positivo” y por el contrario los entrenadores que no cumplen con sus expectativas experimentan una disminucion significativa de...
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THE CONTROL AND QUANTIFICATION OF INTERNAL AND EXTERNAL TRAINING LOADS IS ESSENTIAL TO THE CORRECT DESIGN OF TRAINING PROGRAMS. IN TENNIS, ALONG WITH ANAEROBIC, PSYCHOLOGICAL, AND TACTICAL ABILITIES, TECHNICAL SKILLS AND ENDURANCE... more
THE CONTROL AND QUANTIFICATION OF INTERNAL AND EXTERNAL TRAINING LOADS IS ESSENTIAL TO THE CORRECT DESIGN OF TRAINING PROGRAMS. IN TENNIS, ALONG WITH ANAEROBIC, PSYCHOLOGICAL, AND TACTICAL ABILITIES, TECHNICAL SKILLS AND ENDURANCE CONDITIONING ARE KEY TO COMPETITIVE PERFORMANCE. THEREFORE, IT COULD BE USEFUL TO USE TESTING AND TRAINING LOADS AND METHODS THAT INCLUDE PHYSIOLOGICAL AND TECHNICAL PARAMETERS AT THE SAME TIME. THE AIM OF THIS REVIEW IS TO IDENTIFY A NEW TRAINING LOAD PARAMETER, SUITABLE FOR ON-COURT USE IN TENNIS, BASED ON TECHNICAL AND PHYSIOLOGICAL SKILLS, TO ALLOW CONTROL OF INTERNAL AND EXTERNAL LOADS. INTRODUCTION P erformance in competitive tennis is multifactorial and requires synergy between technical, tactical, psychological, and physiological skills (21,24), specifically, technical skills have been considered to predominate (e.g., stroke skills) (13,15). Stroke skills and main motor actions during play (e.g., accelerations, decelerations, changes of direction) are assumed to be mainly dependent on anaerobic energy sources (intramuscular phosphates and glycolysis) (4,33), and anaerobic training (i.e., speed, agility, and power) is a priority goal of players’ preparation (13,24). On the other hand, an adequate endurance capacity improves the ability to adequately recover from the anaerobic bouts between points, matches, and tournaments (6), and endurance conditioning has been also considered important to high competitive performance (3,4,6,24). This review essentially focuses on endurance testing and training. Considering the multifactorial nature of tennis, it may be valuable to use training loads and methods that can include physiological and technical skills at the same time. The control and quantification of training load has been done using external load criteria (e.g., power output sustained in road cycling) and internal load criteria (e.g., mean heart rate (HR) during a given road cycling duration of time) (10,19). In tennis, to maximize the suitability, effectiveness, and efficiency of on-court training, the authors agreed on the need to monitor tennis-specific training loads (1,3,5,17,29,31,32). Traditionally, however, training load has been controlled intuitively (32). Moreover, there are only a few reports describing the external and internal training loads in tennis, and it is difficult to identify which key metrics and practice recommendations should be included for specific workouts (37). As with all court-based sports, improving performance and reducing the risk of injury requires that tennis players train using specific methods (23). Address correspondence to Ernest Baiget, ernest.baiget@uvic.cat.
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Baiget, E, Iglesias, X, and Rodríguez, FA. Validity of heart rate-based models for estimating oxygen uptake during tennis play. J Strength Cond Res 34(11): 3208-3216, 2020-This study aimed to assess the validity of an on-court tennis test... more
Baiget, E, Iglesias, X, and Rodríguez, FA. Validity of heart rate-based models for estimating oxygen uptake during tennis play. J Strength Cond Res 34(11): 3208-3216, 2020-This study aimed to assess the validity of an on-court tennis test (specific endurance tennis test [SET-Test]) and 2 heart rate (HR)-based methods for estimating oxygen uptake (V[Combining Dot Above]O2) in competitive tennis players. Thirty-five male players performed a SET-Test to relate test duration (minutes) and V[Combining Dot Above]O2. Two weeks later, 16 players performed a simulated match play set where HR and V[Combining Dot Above]O2 (V[Combining Dot Above]O2-PLAY, criterion value) were measured and then compared with V[Combining Dot Above]O2 values predicted from the HR/V[Combining Dot Above]O2 linear regression equations derived from the SET-Test (pV[Combining Dot Above]O2-TEST) and from the one set match play (pV[Combining Dot Above]O2-PLAY). Test duration and V[Combining Dot Above]O2-TEST were strongly correlated (r = 0.821, p < 0.001, SEE = 5.6 ml·kg·min), indicating that SET-Test outcome is a somewhat good indicator of aerobic fitness in tennis players, likely to be useful for training purposes. pV[Combining Dot Above]O2-PLAY and V[Combining Dot Above]O2-PLAY (criterion value) were strongly correlated (r = 0.832, p < 0.001) and SEE was moderate (3.5 ml·kg·min = 11.5%). pV[Combining Dot Above]O2-TEST differed from the criterion (32.4 ± 10.7 vs. 30.8 ± 8.6 ml·kg·min, p < 0.001) and, although strongly correlated (r = 0.689, p < 0.001), an overestimation occurred (mean Δ = 1.6 ml·kg·min = 4.9%), yielding a high SEE (4.8 ml·kg·min = 15.6%). We conclude that (a) SET-Test performance is a valid and moderately accurate predictor of V[Combining Dot Above]O2; and (b) the individual HR-V[Combining Dot Above]O2 regression equation generated during tennis match play predicts V[Combining Dot Above]O2 with greater accuracy than the regression derived from the SET-Test.
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The aims of this study were (a) to examine the effects of a trail mountain race (TMR) on hydration status and neuromuscular performance of recreational trail runners and (b) to determine the relationship among these parameters,... more
The aims of this study were (a) to examine the effects of a trail mountain race (TMR) on hydration status and neuromuscular performance of recreational trail runners and (b) to determine the relationship among these parameters, subject's characteristics and competitive performance. 35 male recreational trail runners (age, 38.1 ± 9.5 years; height, 177.3 ± 5.8 cm; body mass, 73.8 ± 8.4 kg; mean ± SD) were assessed before and after a 21.1 km TMR. Hydration status (urine color [Ucol] and body mass [BM]) and neuromuscular performance (countermovement jump [CMJ] and rebound jumps [RJ]) were assessed. Significant changes following the TMR included RJ mean contact time (RJMCT) (12%, ES = -0.35, p < 0.05) and dehydration status increases (BM reductions [-2.7%, ES = 0.24, p < 0.001] and Ucol [147% increase, ES = -1.8, p…
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The aims of this study were (a) to establish a specific endurance test procedure for competitive tennis players, combining performance, physiological and technical parameters and (b) to determine the relationship between these parameters... more
The aims of this study were (a) to establish a specific endurance test procedure for competitive tennis players, combining performance, physiological and technical parameters and (b) to determine the relationship between these parameters and their competitive levels. Thirty-eight competitive male tennis players (age, 18.2 ± 1.3 years; height, 180 ± 0.08 cm; body mass, 72.7 ± 8.6 kg; mean ± SD) performed a specific endurance field test. Performance (level achieved), physiological (heart rate, maximum oxygen uptake (VO2max), and ventilatory thresholds (VT1, VT2), and technical parameters (technical effectiveness [TE]) were assessed. Bivariate and multivariate models for predicting performance level were developed. Technical effectiveness was 63.1 ± 9.1%, with 3 identified phases throughout the test (adaptation, maximum effectiveness, and steady decline). Low to moderate correlations were found between performance (final stage), physiological (VT1, VT2) and TE, and competitive performance (r = 0.35-0.61; p = 0.038-0.000). Technical effectiveness explained 37% of variability in competitive performance (r = 0.61; p = 0.001). Using TE combined with VT2 or predictability increased explaining approximately 55% (p &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; 0.05) of the variance in competitive performance. The present study showed the usefulness of a field test including physiological and performance elements in high-caliber tennis players, and VT2 values combined with TE were good predictors of tennis performance.
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Background Central and peripheric fatigue indicators are among the main reasons for performance decline following competition. Because of the impact of these factors on performance, how these variables are affected by match-play could be... more
Background Central and peripheric fatigue indicators are among the main reasons for performance decline following competition. Because of the impact of these factors on performance, how these variables are affected by match-play could be of interest, especially in young tennis players. Objective This study aimed to investigate alterations induced by a simulated tennis match on postural control and muscle characteristics in young tennis players. Method Seventeen male junior players took part in pre- and post-competition testing sessions performing postural control (displacement, speed and surface area of center of pressures) and muscle characteristics measurements (tone, stiffness, time to relaxation and elasticity). Between trials, participants played an 80-min simulated tennis match. Results No significant differences were observed in any of the tested variables. Moderate-to-large effect sizes (ES) for decreased stiffness and tone and greater time to relaxation were found between p...
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Purpose: (1) To analyze the associations between serve velocity (SV) and various single-joint upper-limb isometric force–time curve parameters, (2) to develop a prediction model based on the relationship between these variables, and... more
Purpose: (1) To analyze the associations between serve velocity (SV) and various single-joint upper-limb isometric force–time curve parameters, (2) to develop a prediction model based on the relationship between these variables, and (3) to determine whether these factors are capable of discriminating between tennis players with different SV performances. Method: A total of 17 high-performance tennis players performed 8 isometric tests of joints and movements included in the serve kinetic chain (wrist and elbow flexion [EF] and extension; shoulder flexion [SHF] and extension [SHE], internal [SHIR] and external rotation). Isometric force (IF), rate of force development (RFD), and impulse (IMP) at different time intervals (0–250 ms) were obtained for analysis. Results: Significant (P
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Purpose:This study aimed to examine the post-activation potentiation effect on serve velocity and accuracy in young competition tennis players by using complex training and comparing different upper and lower body heavy load resistance... more
Purpose:This study aimed to examine the post-activation potentiation effect on serve velocity and accuracy in young competition tennis players by using complex training and comparing different upper and lower body heavy load resistance exercises.Methods:Fifteen competition tennis players (9 boys and 6 girls, age 15.6 ± 1.5 years) performed 1 control session and 3 experimental sessions using heavy load resistance exercises in a crossover-randomized design: (1) bench press (BP), (2) half squat (HS), (3) BP plus HS, and (4) control trial. Heavy load resistance exercises were performed by accomplishing 3 sets of 3 repetitions at 80% 1RM, lifting the load at maximum speed. To assess the serve velocity and accuracy, all participants performed 32 flat serves after the heavy load resistance exercises, divided into 4 sets of 8 serves (0, 5, 10, 15 minutes post-exercise), resting 20 seconds between serves and 2 minutes and 40 seconds between sets.Results:There were no significant (p>0.05) ...
The ATP World Tour comprises more than 80 tournaments, in about 40 countries. It is organized in different categories which reflect prize money and ranking points. Currently, the players play more tournaments than ever and therefore have... more
The ATP World Tour comprises more than 80 tournaments, in about 40 countries. It is organized in different categories which reflect prize money and ranking points. Currently, the players play more tournaments than ever and therefore have a few training and recovery periods. This study aim was to determine the relationships between performance and competitive volume parameters and the play level in professional players. We analyzed top 50 players in the world re- sults during 52 weeks in 2009 and 2010 seasons. The players played an average of 25.5 ± 3.8 and 25.2 ± 3.5 tournaments and 65.8 ± 10.7 and 62.6 ± 11.8 matches per season. There was a significant moderate negative relationship between tournaments number and ranking (r = -0.537 and r = -0.533, P <0.001). There also was a discrete but significant positive relationship between played matches number and ranking (r = 0.367 and r = 0.301, P <0.05). Consequently, higher level players play fewer tournaments per season, tend to ...
The main objective of endurance training for competitive tennis players is to improve their ability to repeatedly undertake high intensity exercises, recover quickly from this effort, and maintain this intensity throughout the match,... more
The main objective of endurance training for competitive tennis players is to improve their ability to repeatedly undertake high intensity exercises, recover quickly from this effort, and maintain this intensity throughout the match, thereby avoiding or delaying the onset of fatigue. In order to develop the specific energy systems, players focus training on the development of the energy paths and movement patterns that are predominant in competition, giving as much consideration as possible to the intermittent nature of the sport and the specific muscular participation. Intermittent training (IT) is a suitable method for tennis and improves the level of specificity with regard to the traditionally-used continuous or interval methods. Also, it can be executed on the tennis court with specific exercises. It is important to monitor the training load parameters appropriately in order to correctly focus the physiological adaptations and effects of training on the needs of the sport. This...
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ABSTRACT The coordination level of the non-dominant extremity it is an efficiency factor that can influence the overall final performance of the two handed backhand stroke (COE,1999). This research paper, analyses the relationship between... more
ABSTRACT The coordination level of the non-dominant extremity it is an efficiency factor that can influence the overall final performance of the two handed backhand stroke (COE,1999). This research paper, analyses the relationship between the coordination level of the non-dominant extremity at children, with the achieved technical performance of the two handed backhand stroke. The research is based in a serial of 5 tests, that have been specifically designed to that analysis. As a conclusion, there is a high relationship between these two factors. Therefore, it is key to train the coordination level of the non-dominant extremity. La coordinación del miembro no dominante, se manifiesta cómo un factor que puede afectar al rendimiento técnico final del revés a dos manos en tenis (COE, 1999). La presente investigación plantea la valoración del nivel de coordinación del miembro no dominante en niños con relación al rendimiento técnico del revés a dos manos, empleándose, para tal fin, una batería de cinco pruebas diseñadas para tal efecto. En este sentido, se observó que la coordinación del miembro no dominante en niños afecta al rendimiento final del golpe de revés a dos manos, erigiéndose así el desarrollo de dicho aspecto en un contenido importante a tratar durante las sesiones de entrenamiento
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ABSTRACT In recent years there has been an increased interest to assess physiological and technical parameters in tennis players; currently there are tests that allow registering these parameters in parallel on the tennis court. The aim... more
ABSTRACT In recent years there has been an increased interest to assess physiological and technical parameters in tennis players; currently there are tests that allow registering these parameters in parallel on the tennis court. The aim of this study is to determine the relationships between technical and physiological parameters resulting from the application of a specific endurance test procedure for tennis players. 38 male competition tennis players performed a continuous and incremental field test and technical (technical effectiveness (TE), point of decreasing TE (PDTE)) and physiological parameters (maximal oxygen uptake (VO2max), first and second ventilatory thresholds (VT1 and VT2)) were recorded. We found a significant relationship between PDTE and VT2 (r = 0.365, P &lt;0.05) and between TE and VO2max (r = 0.459, P &lt;0.01). In conclusion, players with a better aerobic profile tended to get better results in terms of TE and showed a tendency to decrease TE as of the appearance of VT2.