Major international sport profiles

Patel, Dilip R.; Stier, Bernhard; Luckstead, Eugene F.

doi:10.1016/s0031-3955(02)00018-4

Cited by 28 publications

(25 citation statements)

References 120 publications

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“…Soccer is the most popular sport in the world, with about 200 million participants at every levels (amateur and professional), gender (male and female) and age (child, adult and elderly) [1]. Similar to other field-based team sport, soccer is characterized by alternation of high-and lowintensity movements and other intense actions such as jumps, turns, tackles, kicking and dribbling [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Relationship among explosive power, body fat, fat free mass and pubertal development in youth soccer players: a preliminary study

et al. 2014

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Purpose Changes in body size and functional capacities are highly individual during puberty, and the performance of a soccer player is often closely related to their maturity status. The aim of the study was to evaluate the relationships among explosive power, body fat, fat free mass and pubertal development in young soccer players. Methods Explosive power (countermovement jump-CMJ), body mass index (BMI), percentage of body fat (%BF), fat free mass (FFM) and a Self-Administered Rating Scale for pubertal development (PDS) values of 11 ''Giovanissimi'' (age 13 year), 13 ''Allievi'' (age 15 year) and 10 ''Juniores'' (age [17 year) male soccer players were compared. The statistical analysis was performed using an analysis of variance among categories with Fisher's post hoc as appropriate. Furthermore, Pearson correlations among variables were calculated considering all subjects and also within categories. Results Statistical differences emerged among categories in CMJ (F (2,30) = 28.3, p \ 0.01), body fat weight (F (2,31) = 29.2, p \ 0.01) and PDS (F (2,29) = 18.5, p \ 0.01), while %BF values showed statistical differences only for ''Giovanissimi'' and ''Juniores'' (F (2,31) = 3.4, p = 0.01). CMJ showed significant correlations with FFM (r = 0.68) and PDS (r = 0.63), PDS with FFM (r = 0.66) and BMI with %BF (r = 0.71) and FFM (r = 0.71). A high correlation was found within categories. Conclusion Since we found differences between categories and no correlation between chronological age and pubertal status, this study highlights the importance of assessing of puberty in youth soccer team.

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Section: Introductionmentioning

confidence: 99%

Relationship among explosive power, body fat, fat free mass and pubertal development in youth soccer players: a preliminary study

et al. 2014

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“…[1][2][3] Players carry out all sorts of explosive actions such as intermittent sprinting with many changes of direction, cruising, and dribbling the ball, placing it in the category of ''heavy exercise''. 4 To perform at the highest level, players need a well developed interval endurance capacity. This is the ability to perform high intensity activities such as running and sprinting, as well as the ability to recover well during low intensity activities such as walking and jogging.…”

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confidence: 99%

Development of the interval endurance capacity in elite and sub-elite youth field hockey players

Elferink‐Gemser

Visscher

Duijn³

et al. 2006

Br J Sports Med

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Objectives: To gain more insight into the mechanisms that underlie the development of interval endurance capacity in talented youth field hockey players in the 12-19 age band. Methods: A total of 377 measurements were taken over three years. A longitudinal model for interval endurance capacity was developed using the multilevel modelling program MLwiN. With the model, scores on the interval shuttle run test can be predicted for elite and sub-elite male and female field hockey players aged 12-19 years.Results: A polynomial model of order 2 adequately represents development of the test scores over time. The fixed part of the model contains a different intercept and linear age term for boys and girls, and a common quadratic term; the random part of the model has a common level 2 variance and sex specific level 1 variances. The model was significantly improved by including differential effects of performance level for age and sex. A negative effect was found for percentage body fat, and positive effects for additional training and motivation. Conclusions: During adolescence, both male and female elite hockey players show a more promising development pattern of interval endurance capacity than sub-elite youth players. Percentage body fat, additional training hours, and motivation influence this development. However, differences between the individual players are still considerable.

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“…[5][6][7] The increasing interest in TKD is reflected in its recent incorporation into the Olympic Games. 8,9 There are a variety of kicks taught within the sport, which are thought to have different applications and powers. The differences in the biomechanics of the individual kick styles may be accompanied by different injury risks.…”

Section: Introductionmentioning

confidence: 99%

The Kicking Process in Tae Kwon Do: A Biomechanical Analysis; Running title: Biomechanical Analysis of Taekwondo

Burke

Al‐Adawi

Burke

et al. 2017

IPMRJ

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The kicking process in tae kwon do: a biomechanical analysis; running title: biomechanical analysis of taekwondo Submit Manuscript | http://medcraveonline.com IntroductionThere are various forms of martial arts practiced throughout the world, each with its own philosophy and style.1-3 Tae Kwon Do (TKD) is a popular Korean martial art and the most commonly practiced one in the United States. About 2 million people participate in martial arts throughout the United States.4 When practiced as a light contact sport, TKD is considered relatively safe. [5][6][7] The increasing interest in TKD is reflected in its recent incorporation into the Olympic Games. 8,9 There are a variety of kicks taught within the sport, which are thought to have different applications and powers. The differences in the biomechanics of the individual kick styles may be accompanied by different injury risks. 10,11 Few studies have rigorously addressed these differences. While some studies have described the types of injuries that take place in TKD, 12,13 the question of how these injuries occur has not been addressed. Most TKD kicking techniques embody high speed and power, and thus present an increased potential for injury.14 The forces that are generated depend on the kick and how the kick is executed. Some kicks involve stepping towards the target, following a kick. Other kicks involve leaving the ground. Some involve rotation of the pelvis, others involve spinning motions. The kinetics of these separate motions remains unclear.In a study done by Serina et al.15 the potential incidence of thoracic injury as a result of various TKD kicks was analyzed. A series of four basic kicks were studied including the roundhouse, turning roundhouse, back and sidekicks. The velocity and energy produced by each kick was calculated. They found that the roundhouse and turninground house kicks are the fastest and they argued that therefore these kicks have the greatest potential for causing soft tissue injury. They also suggested that the back and side kick may predispose a TKD opponent to the highest likelihood of injury given the level of chest compression caused by these kicks. Robertson et al.16 used a biomechanical model to describe the occurrence of peak power during a front kick. They found that the peak power during a front kick was greater for the open stance than for the closed stance position. They also found that the hip extensors and flexors were the prime movers of both the hip and knee.These studies have however lacked a thorough analysis of the motor strategies employed to deliver a powerful blow. This is important information for TKD proponents who teach this martial art as a means of self defense. In addition, as TKD is becoming an increasingly popular sport, understanding the biomechanics of the various kicks may be used to improve competitiveness and safety within the sport. This may have clinical relevance for the sports medicine physician in that patients may be educated on both how they can improve their strategy and safety during the k...

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Major international sport profiles

Cited by 28 publications

References 120 publications

Relationship among explosive power, body fat, fat free mass and pubertal development in youth soccer players: a preliminary study

Relationship among explosive power, body fat, fat free mass and pubertal development in youth soccer players: a preliminary study

Development of the interval endurance capacity in elite and sub-elite youth field hockey players

The Kicking Process in Tae Kwon Do: A Biomechanical Analysis; Running title: Biomechanical Analysis of Taekwondo

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