Sargent Jump Research Articles

THE EFFECT OF SINGLE HIGH-VELOCITY, LOW-AMPLITUDE SPINE MANIPULATION ON POSTURE, FUNCTIONAL STATE OF TORSO, THIGH MUSCLES, AND VERTICAL JUMP HEIGHT

The effects impact of single high-velocity, low-amplitude (HVLA) spinal manipulation on posture, torso, and thigh functional condition, and the height of the vertical jump have not been adequately studied. The research aims to investigate the immediate changes caused by a single spinal vertebral HVLA manipulation 3 weeks after posture, torso, and thigh muscle functional state, and vertical jump height. The study involved 46 men aged 18-25 years old who practiced indoor volleyball training at least twice a week, as well as a deviation of the vertebral vertebrae from the non-thymic position. Initially, posture was assessed using the photogrammetry method and muscle length was assessed using the goniometry method. A vertical jump height test was performed by the Sargent Jump test. A single HVLA spinal manipulation was performed by a certified chiropractor for segment correction. Then, a re-assessment of posture (photogrammetry), re-assessment of movement volume (goniometry) as well a re-assessment of vertical jump height test- the Sargent Jump test was performed. After 3 weeks post HVLA manipulation participants were retested. The main findings are: immediately after the HVLA spinal correction changes in posture were observed in all evaluated parameters, deviations from the norm decreased by 25.45% ± 1.27% (p < .005), while the vertical jump height test results immediately after HVLA increased by 4.34% ± 0.11% (p < .005). After 3 weeks post HVLA spine manipulation therapeutic effect was reduced by 5.48% ± 1.27% (p < .005), while the Sargent Jump test result 3 weeks after manipulation decreased by 0.05% ± 0.11% (p > .005). Conclusion: the persistence of the effect of a single HVLA spine manipulation was maintained for 3 weeks after the manipulation into the posture.

Effects of Manual Mobilization and Self-exercise on Hip Joint Mobility, Body Balance, Sargent Jump and Smash Speed in Elite Badminton Players

Effects of Manual Mobilization and Self-exercise on Hip Joint Mobility, Body Balance, Sargent Jump and Smash Speed in Elite Badminton Players

Executive Functions, Physical Abilities, and Their Relationship with Tactical Performance in Young Soccer Players.

While tactical performance in soccer is associated with the players' and teams' collective actions in the context of game stimuli, how tactical performance relates to players' executive functions (EFs) and physical abilities should be examined. In this study, we examined these relationships among 81 Under-15 male soccer players who underwent tactical evaluation (FUT-SAT), EF tests (i.e.,(Stop-Signal Test and Design Fluency Test)), and physical tests (i.e.,(Maturity Offset, Yoyo Endurance Test II, Sargent Jump Test, and Sprint Test)). Multiple linear regression modeling with the stepwise method showed that approximately 48% of overall game tactical performance variance was explained by inhibitory control, biological maturation, and sprint capacity (p = .004; d = .54; r2 = .479), whereas 35% of offensive tactical performance variance was explained by the same dimensions (p = .001; d = .91; r2 = .353). In addition, approximately 28% of defensive tactical performance variance was explained by cognitive flexibility and aerobic resistance (p = .007; d = .39; r2 = .280). These results reflect the combined importance of EFs and physical abilities for tactical performance in young soccer players, suggesting that these abilities may be targets for training when trying to improve young players' performance.

Effect of 12 Weeks of Core Stability Exercises on Functional Movement and Balance of Women Working in Hospitals

Objective: This study aims to assess the effect of 12 weeks of core stability exercises on functional movement and balance of women working in hospitals. Methods: Participants were 34 women aged 30-50 years working in Imam Khomeini Hospital in Tehran, Iran. They were randomly divided into two groups of exercise and control. The exercise group performed core stability exercises for 12 weeks. The functional movement was evaluated using the valid Function Movement Screen (FMS) method. The dynamic balance, power, agility, speed and flexibility of subjects were also measured using Y balance test, Sargent Jump Test, agility T-test, 20-meter running test, and seated bending forward test, respectively before and after exercise. Paired T-test was used to examine the difference between pre- and post-test scores of each group. Analysis of Covariance (ANCOVA) was used to determine the effect of intervention on the study variables. Results: Results of ANCOVA showed that 12 weeks of core stability exercises significantly improved functional movement performance, dynamic balance, power, agility, speed and flexibility in women. Conclusion: Core stability exercises can improve the performance of neuromuscular system leading to proper movement of spinal, pelvic and hip joints, proper muscle balance, enhanced proximal stability, functional strength and resulting in decreased injury.

Analysis of vertical and horizontal impulsion in male handball athletes from joinville-sc

Handball has become a popular sport because it is easy to learn and very common in Brazilian schools, mostly, given that it is an Olympic sport. The goal of this study is to analyze the vertical and horizontal impulsion index in male handball athletes from Joinville. The sample counted 17 athletes with ages ranging from 14 to 18 years old. Seventeen athletes belonging to the handball team of the city of Joinville were investigated. For data collection the tests were used: Sargent Jump Test (Sargent, 1921) and Lower Limb Explosive Strength Test (GAYA, 2016), in all jumps three attempts were performed and only the highest of them was taken into account for validation. After the results in the tests the athletes obtained in the Jump Without Assistance (SSA), 47.05% of the athletes had a result considered GOOD, 35.29% were considered REGULAR and 17.64% in the VERY GOOD. In the Sargent Jump with aid of upper limbs, with the nomenclature Jump with Aid (SCA), 41.17% had jumps considered VERY GOOD, 35.29% considered GOOD, 11.76% considered GREAT and 5.88% considered REGULAR. In the lower limbs explosive strength test (TFEMI), 41.18% of the athletes were classified as VERY GOOD, 29.41% as GOOD, 23.52% as REASONABLE, and 5.88% as FAIL. After the conclusion of the data collection and analysis, the athletes in this study were classified with a jump considered good for their age group and most of the analyzed athletes had results higher than expected. The author highlights that with a more detailed study and with a more in-depth approach, so as to corroborate with other studies and with this one for future research.

The Effectiveness of Using Computer Integrated Anthropometry and Vertical Jump as Measuring Device

This research aimed at determining the effectiveness of the use of computer-integrated anthropometrics and vertical jump as a measuring device. The participants were 42 students aged 18-21 years old. The research design used was counterbalanced-design. The instrument used was the Integrated Anthropometric Test (IAT) to measure body weight (BW), body height (BH), arm span (AS), limb length (LL), and vertical jump (VJ) in one set of device and compared with Standard Anthropometric Test (SAT) consist of anthropometric measurements including BW, BH, AS and LL that follow the standard procedure from the International Standards for Anthropometric Assessment (ISAK) and Sargent Jump test to measure vertical jumps. The results showed that the IAT and SAT measurements had a validity measurement value of BW measurements of 0.994, BH of 0.969, AS of 0.820, LL of 0.745, and VJ of 0.903 with P <0.01, and the total duration of the IAT measurement process was 36 minutes 18 seconds, SAT was 1 hour 7 minutes 27 seconds. It was concluded that the Integrated Anthropometric Test (IAT) had a very high validity value for the BW, BH, AS, and VJ measurements and a high category for LL measurements so that it can be used as an anthropometric and vertical jump measurement device. IAT had a shorter measurement duration than SAT, thus it can be said that IAT had a good level of effectiveness.

Relationship between body composition and physical capacities in junior soccer players

Abstract The number of studies related to soccer has been growing exponentially in the last years because the modality is considered the most popular in the world. It is known that the development of some specific physical capacities, even in young individuals, is essential to high-level performance and these capacities might be related to anthropometrics variables. The purpose of this study was to verify the relationship between body composition and physical capacities in young soccer players. Study participants were athletes from junior categories (under-12 and under-13) belonging to the Soccer Association of Chapecó, Brazil.. Athletes were submitted to agility, (Illinois), vertical jump (Sargent Jump), aerobic condition (TCAR), flexibility and sit-and-reach (Wells Bench) tests, as well as anthropometric assessment. All procedures were performed at UNOESC campus, Chapecó. Statistical analysis consisted of the Spearman’s Rô test, measuring the correlation among variables, additionally, significance level of p&lt;0.05 was adopted. Results showed significantly correlation in agility (p=0.000; ρ=0.530) and vertical jump tests (p=0.003; ρ=-0.437) with body fat percentage. It was concluded that there is relationship between body fat percentage and agility and explosive power of lower limbs.

Influencia de la pliometría basada en un Entrenamiento Intervalado de Alta Intensidad sobre la altura de salto y pico de potencia en futbolistas Sub - 17

Introducción: Un entrenamiento pliométrico basado en HIIT que mejore la potencia muscular en futbolistas adolescentes, aún no ha sido del todo estudiado. Objetivo: Analizar el efecto de un entrenamiento pliométrico basado en HIIT sobre la potencia muscular en futbolistas Sub-17. Materiales y métodos: Veinticuatro futbolistas divididos en dos grupos fueron parte del estudio (Grupo Experimental [GE] n = 12 y Grupo Control n = 12). Las variables fueron: altura (h) de salto y Pico de potencia (Pp) a través del Test de Sargent. El protocolo utilizado fue un entrenamiento pliométrico basado en HIIT. Para el análisis estadístico se utilizó la prueba t de Student y el tamaño del efecto fue calculado con la prueba d de Cohen. Resultados: La h en el Test de Sargent presentó un aumento significativo post intervención sólo para el GE (p &lt; 0.0001; Tamaño del Efecto = 0.763). En relación a los Pp, sólo el GE presentó un aumento significativo post intervención (p &lt; 0.0001; Tamaño del Efecto = 0.413). Conclusiones: Los resultados dejaron en evidencia que el entrenamiento pliométrico basado en HIIT es una herramienta efectiva para incrementar la h de salto y Pp en futbolistas adolescentes Sub-17.

Comparison of Antropometric and Physical Fitness Characteristics of Korean Female Professional Basketball Players by Class and Playing Position

PURPOSE The purpose of the study was to compare anthropometric and physical fitness characteristics of Korean female professional basketball players in different classes (starter and non-starter) and playing positions. METHODS Twenty-four female professional basketball players (12 starter vs. 12 non-starter) participated in this study voluntarily. For each player, anthropometric measurements were performed, as well as a sargent jump (SJ), isokinetic leg strength, side step, and graded exercise tests (GXT). RESULTS Starters’ fat mass (p<.05), %fat (p<.05) and HRmax (p<.001) were significantly lower than those of non-starters’, whereas Starters’ sargent jump was significantly higher than those of non-starters’ (p<.05). However, there was no significant differences in relative left and right leg flexor and extensor strength at 60˚/sec and 180˚/sec among playing positions. According to the correlation analysis, %fat and HRmax were negatively correlated and lean body mass was positively correlated with the SJ. The side step had a negative correlation with BMI, but a positive correlation with VO2max, while VO2max was negatively correlated with fat mass, %fat and HRmax. CONCLUSIONS The findings of the present study indicated that physical performance of female professional basketball players differed between starters and non-starters, whereas there were no significant differences among guards, forwards and centers. According to the present study, in order to improve the competitiveness of female professional basketball players, body composition management is required to reduce body fat mass, % fat, and BMI, as well as muscle strength strengthening and cardiopulmonary endurance training programs also demand. 색인어: 여자, 프로농구 ì„ ìˆ˜, ì‹ ì²´ê³„ì¸¡, ì²´ë ¥, í¬ì§€ì ˜ Keywords: Female, Professional Basketball, Anthropometric, Fitness, Position

Reliability of Sargent Jump Test in 4- to 5-Year-Old Children.

We assessed the test-retest reliability of the Sargent jump (VJ) for vertical jumping performed by 4 and 5 years old pre-schoolers. The VJ was administered three times (familiarization, test, and retest) to 163 children (mean age: 4.48 ± 0.5 years; 55.8% girls). The results were compared with those obtained in the standing long jump (SLJ) and in the 25 -m dash test to identify how its performance correlated with other measures of leg power. Systematic change in the mean and retest correlations with these other measures were used to help analyze VJ test-retest reliability. Additionally, Pearson correlation coefficients were used to examine the degree of association between the test and retest trials of the VJ. The VJ showed a higher correlation and agreement in the 4-year-old, compared with the 5-year old, group (rc = 0.956 vs. 0.796; α = 0.95 vs. 0.84; ICC: 0.828; 95% CI: 0.730-0.891 vs 0.739; 95% CI: 0.589-0.834). Effect sizes were small ( d ≤ 0.285) for all the VJ tests performed. Fair to poor significant relationships were established between the VJ (test), VJ (retest), and the SLJ. No significant association was observed between the VJ and the 25 -m dash tests. Our findings suggest that the Sargent jump test is reliable when executed by 4- and 5-year-olds. The lack of a strong association with other measures of leg power should be taken into account at the time of selecting the most appropriate test to assess this strength dimension.

정적 스트레칭시 세트수와 휴식시간의 차이가 서전트 점프, 등속성 근력 및 유연성에 미치는 영향

정적 스트레칭시 세트수와 휴식시간의 차이가 서전트 점프, 등속성 근력 및 유연성에 미치는 영향

Physical fitness reference tables for females in the 10 to 14 age range in Chillán (Chile)

Objective To develop physical fitness reference tables oriented towards the health of female students in the 10 to 14 year age range, in Chillán, Chile. Method The present is a cross-sectional study. The sample is composed of 250 female students in the 10 to 14 year age range. To evaluate health-related physical fitness, the following tests were used: Body mass index (BMI), Deurengerg Formula (Body fat %), Wells and Dillon's Bench (Flexibility), Sargent Jump Test (lower limbs strength, 1 Mile Test (endurance) and the 30 Seconds Sit Up Test (focalized muscular endurance). Descriptive statistics were used to develop the reference tables. From the results, 5 categories were made: very bad, bad, regular, good, and very good. Age was used as a parameter. Results This study demonstrates the low level of fitness capacity of the group evaluated when compared to national and international references. It shows low levels of cardiorespiratory endurance, strength of lower limbs, flexibility, and focalized muscular endurance. The present study also shows that being overweight is associated with low cardiorespiratory capacity, and that there was a high prevalence of this in the sample compared to the national level of overweight and obesity in females in the 10-14 age range. Conclusion The tests applied in the present study are a reliable and simple tool for assessing the level of health-related fitness capacity. They can be applied in any educational institution, since a large or complex infrastructure for its application is not required.

Effects of a Songahm taekwondo tournament on vertical jump and technical-tactical performance in athletes of the Brazilian national team

PurposeThe study aimed to verify the effects of a simulated taekwondo tournament on vertical jump as well as technical and tactical performance in athletes of the Brazilian national team.MethodsThe study involved 10 male Songahm taekwondo athletes. They took part in a simulated tournament in sparring modality, comprising four 2-minute fights with different opponents. Before and after each fight, the athletes performed the Sargent Jump Test and were asked to indicate the rate of the perceived exertion (RPE). In addition, the fights were recorded and some technical and tactical variables were analysed, namely the number of kicks, effectiveness, and technical variety. The analysis of variance for repeated measures with the Bonferroni post hoc test was used, with the significance level set at &lt;i&gt;p&lt;/i&gt; &lt; 0.05.ResultsNo significant differences in the jump height were observed throughout the fights (&lt;i&gt;p&lt;/i&gt; = 0.22, trivial effect). The RPE increased over the fights (&lt;i&gt;p&lt;/i&gt; &lt; 0.01, large effect); however, no significant differences were obtained after each fight (&lt;i&gt;p&lt;/i&gt; &gt; 0.05, trivial effect). All technical and tactical variables remained unchanged over the fights (&lt;i&gt;p&lt;/i&gt; &gt; 0.05, trivial-to-small effect).ConclusionsThe simulated taekwondo tournament had no effect on vertical jump or technical and tactical performance throughout the fights. The athletes were able to recover the effort perception before each new fight.

Correlations between sportsmen’s morpho-functional measurements and voice acoustic variables

PurposeSince human voice characteristics are specific to each individual, numerous anthropological studies have been oriented to find significant relationships between voice and morpho-functional features. The goal of this study was to identify the correlation between seven morpho-functional variables and six voice acoustic parameters in sportsmen.MethodsFollowing the protocols of the International Biological Program, seven morpho-functional variables and six voice acoustic parameters have been measured in 88 male professional athletes from Kosovo, aged 17–35 years, during the period of April–October 2013. The statistical analysis was accomplished through the SPSS program, version 20. The obtained data were analysed through descriptive parameters and with Spearman’s method of correlation analysis.ResultsSpearman’s method of correlation showed significant negative correlations (&lt;i&gt;R&lt;/i&gt; = –0.215 to –0.613; &lt;i&gt;p&lt;/i&gt; = 0.05) between three voice acoustic variables of the fundamental frequency of the voice sample (Mean, Minimum, and Maximum Pitch) and six morpho-functional measures (Body Height, Body Weight, Margaria-Kalamen Power Test, Sargent Jump Test, Pull-up Test, and VO&lt;sub&gt;2max&lt;/sub&gt;.abs).ConclusionsThe significant correlations imply that the people with higher stature have longer vocal cords and a lower voice. These results encourage investigations on predicting sportsmen’s functional abilities on the basis of their voice acoustic parameters.

ANTHROPOMETRIC PROFILE, BODY COMPOSITION AND VERTICAL JUMP SCORE IN BOXERS AND SWIMMERS

&lt;p&gt;&lt;strong&gt;Background.&lt;/strong&gt; Vertical jump test (VJT) is used in some sport disciplines to evaluate an individual’s lower extremity power. However, VJT data is unavailable in young Indian boxers and swimmers.&lt;br /&gt;&lt;strong&gt;Objective.&lt;/strong&gt; The given study was aimed to evaluate the VJT, anthropometric profile and body composition in young male Indian swimmers and boxers and compare the data with sedentary control group. The study also explored the relationship of VJT with anthropometric parameters and different components of body composition in the studied groups.&lt;br /&gt;&lt;strong&gt;Methods&lt;/strong&gt;. Male boxers (n=40), swimmers (n=40) and sedentary subjects (n=40) with similar socio-economic background with age ranging between 21 and 25 years were sampled for the study from Kolkata, India. Body composition was determined by skinfold measurements and VJT was evaluated by Sargent Jump Test.&lt;br /&gt;&lt;strong&gt;Results. &lt;/strong&gt;One way ANOVA shows significant (p&amp;lt;0.001) difference in body mass, %fat, total body fat (TF), lean body mass (LBM) and VJT score in boxers, swimmers and sedentary groups. Significant positive correlation of LBM with VJT score was associated with a greater jumping height in swimmers. On the other hand, VJT had significant negative (p&amp;lt;0.05) correlation with sum of all the skinfolds, individual skinfold and total fat in both athlete group as well as in the sedentary group.&lt;br /&gt;&lt;strong&gt;Conclusion.&lt;/strong&gt; Significant intergroup difference was found in the studied parameters. VJT scores obtained in all the groups were well comparable. Higher value of body %fat imposed the unfavourable effect towards achieving higher jumping height mainly in sedentary group.&lt;br /&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/p&gt;&lt;p&gt;&lt;strong&gt;KEY WORDS:&lt;/strong&gt; VJT, boxers, swimmers, %fat, LBM.&lt;strong&gt;&lt;/strong&gt;&lt;/p&gt;

Validity and reproducibility of the sargent jump test in the assessment of explosive strength in soccer players.

The purpose of this study was to check the validity and the intra- and inter-evaluators reproducibility of the Sargent Jump Test, as an instrument of explosive strength measurement of soccer players of the sub-15 class. Forty-five soccer players were randomly selected from different clubs competing in the local soccer championship. All subjects performed one test on the same jump platform model Jumptest® (Hidrofit Ltda, Brazil) and two independent Sargent Jump Tests assessed by the same evaluator. Two days later, another Sargent Jump Test was performed simultaneously assessed by 2 evaluators. In all tests, three jumps were performed and the highest one was registered. In order to check the validity, the first Sargent Jump Test results were compared to those from the jump platform, considered the gold standard. To evaluate intra- and inter-evaluator reproducibility, results from the first, second and third Sargent Jump Tests were analyzed. The validity and reproducibility were evaluated by intraclass correlation coefficients (ICC), and by the Bland and Altman test (statistical pack SPSS 11.0), with a significance level set at p<0.05. The values found for validity (r=0.99, p=0.001), for intra-evaluator reproducibility (r=0.99, p=0.001) and for inter-evaluator reproducibility (r=1.0, p=0.001), permitted us to conclude that the Sargent Jump Test is a valid and reproducible instrument for measuring the explosive strength in homogeneous groups, such as those used in the present study.

Ankle Stabilizers Affect Agility but Not Vertical Jump or Dynamic Balance Performance

Ankle stabilizers can reduce ankle sprain incidence and severity by limiting range of motion. Still whether using them affects performance remains unclear. The authors compared effects of 3 ankle stabilizers, tape, lace-up (Swede-O Ankle Lok), and semirigid (Air-Cast Air-Stirrup) braces, and a nonsupport control on vertical jump (Sargent Jump Test), agility (Right-Boomerang Run test), and dynamic balance (Modified Bass Test) in 10 volunteers (4 males, 6 females; 25.6 ± 2.8 years, 167.8 ± 13.7 cm, 61.4 ± 10.7 kg) using repeated-measures ANOVAs. Participants had similar vertical jump (P = .27; control = 41.40 ± 11.89 cm, tape = 37.90 ± 7.92 cm, Swede-O = 41.40 ± 11.89 cm, Air-Cast = 39.29 ± 10.85 cm) and dynamic balance (P = .08; control = 92.50 ± 2.46, tape = 91.55 ± 3.53, Swede-O = 97.00 ± 5.32, Air-Cast = 89.40 ± 6.08) but differing agility scores (P = .03; control = 13.55 ± 1.35 seconds, tape = 14.03 ± 1.5 seconds, Swede-O = 14.10 ± 1.36 seconds, Air-Cast = 14.14 ± 1.41 seconds). Post hoc tests revealed a significant difference (P = .03) between control and Air-Cast but not between Swede-O (P = .06) or tape (P = .07). Effect size (d) analyses indicated that compared with control, all stabilizers trended to increase agility run times (tape, d = 0.33; Swede-O, d = 0.40; Air-Cast, d = 0.43). Since participants primarily required sagittal plane motion when jumping vertically and had relatively slow directional changes in the dynamic balance test, wearing ankle stabilizers did not hamper jump or balance. However, ankle stabilizers hindered participants' ability to perform quick directional changes required in the agility test, with the most rigid stabilizer (Air-Cast) affecting agility the most. Clinicians should be aware that ankle stabilizers may affect some performance measures (agility) but not others (jumping, balance) and continue examinations in larger cohorts. Therapeutic, Level II.

VALIDADE E FIDEDIGNIDADE DO SARGENT JUMP TEST NA AVALIAÇÃO DA FORÇA EXPLOSIVA DE JOGADORES DE FUTEBOL

The purpose of the this study was to check the validity and the intra and interday reliability of the Sargent Jump Test, as an instrument to measure the explosive strength of the sub-15 class soccer’s’ athletes. Forty-five soccer players from several clubs which dispute the Carioca Championship were assessed, randomly chosen, who performed one test in a Jump Platform and two Sargent Jump Tests, all of them in the same day and one more Sargent Jump Test 48 hours later. In all tests there were performed three jumps and only the highest one was computed. In order to assess the validity there were used the results from the Jump Platform and from the first Sargent Jump Test. In order to assess the intraday reliability, there were used the results from the first and the second Sargent Jump Test and to assess the interday reliability there were used the results of the first and the third Sargent Jump Test. For the normality assessment of the data it was used the Kolmogorov-Smirvov test. The validity and reliability were given through the interclass correlation coefficient with definition of absolute agreement of the Bland and Altman test, from the statistical pack SPSS 11, with a significance level of p<0,05. It was noted: validity (r=0,99, p=0,001), intraday reliability (r=0,99, p=0,001), and interday reliability (r=0,97, p=0,001). These results allow confirming that, for the considered sample, the Sargent Jump Test constitutes a useful and valid instrument to assess the explosive strength.

Effects of two modes of exercise training on physical fitness of 10 year-old children

Effects of two modes of exercise training on physical fitness of 10 year-old children Study aim: To compare two exercise training modes on the physical fitness of 10 year-old children. Material and methods: A sample of 60 schoolboys aged 10 years were randomly divided into 3 groups: Traditional (TG), trained according to the Brazilian national curricular parameters, Maturational (MG), in which the degree of difficulty of the activities was adjusted to the level of maturity of subjects, and Control group (CG). The Greulich-Pyle protocol was used to assess biological maturity. The following fitness tests were applied: 5x10 m shuttle run (SHR), Burpee's test (BCT), goniometric (LABIFIE) measurement of shoulder joint flexibility (SAA), horizontal shoulder flexion (HSF), shoulder joint abduction (SJA), lumbar spine flexion (LSF), hip joint extension (HJE) [10], Sargent's Jump Test (SJT), endurance shuttle run (ESR) and 50-m run. The TG and MG groups trained 16 weeks, twice weekly. Results: The only significant (p&lt;0.05) between-group differences were found for SJA (TG&gt;MG) and LSF (TG&gt;CG). Conclusions: Despite the lack of clear-cut results, biological maturation combined with chronological age should be considered when applying various methodological approaches in order to encourage the engagement in physical exercises as this would have favourable carry-over effects.

Efeito ergogênico de uma bebida esportiva cafeinada sobre a performance em testes de habilidades específicas do futebol

O consumo de cafeína tem demonstrado promover efeitos ergogênicos sobre a performance de atletas de esportes coletivos. O objetivo do presente estudo foi comparar o efeito de uma bebida esportiva cafeinada (BEC) frente a uma bebida carboidratada comercial (BCC) sobre a performance durante a execução de testes físico-motores de habilidades específicas do futebol. Os atletas foram submetidos a dois testes, salto vertical (Sargent Jump) e teste de agilidade (Illinois Agility Test), que foram executados antes e após as partidas durante as quais foram consumidas BEC (7% de carboidratos (CHO), concentração de cafeína correspondente a 250mg.l-1) ou BCC (sem cafeína, 7% de CHO). Os resultados demonstraram que BEC aumentou significantemente (p &lt; 0,01) a altura atingida no salto em relação ao momento anterior ao seu consumo e em comparação com a BCC (p = 0,02). BCC não promoveu aumento na potência de membros inferiores. Tanto BEC (p = 0,62) quanto BCC (p = 0,93), não aumentaram a agilidade no teste realizado após a partida em comparação com o realizado anteriormente. Ambas as bebidas não foram capazes de melhorar o desempenho na execução do teste de agilidade após a partida (p = 0,95). O consumo de BEC proporcionou um efeito ergogênico para jogadores de futebol, aumentando a potência de membros inferiores relacionada com a força explosiva. Contudo, quanto à agilidade não foi possível identificar vantagens no desempenho.