Judo Practice in Early Age Promotes High Level of Bone Mass Acquisition of Growing Boys' Skeleton

Missawi, Kawther; Zouch, Mohamed; Chaari, Hamada; Chakroun, Yosra; Tabka, Zouhaïr; Bouajina, E.

doi:10.1016/j.jocd.2017.06.004

Cited by 6 publications

(14 citation statements)

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“…Our volleyball players gained more BMC and density in dominant radius, and BMD in nondominant ultradistal and third distal radius than controls. Our results are in partially accordance with those of previous studies among prepubescent judoists [ 30 ], volleyball [ 17 ], and basketball players [ 14 ]. Contrarily, Zouch et al did not show any significant difference in BMD in arms among soccer players compared to controls [ 43 ].…”

Section: Discussionsupporting

confidence: 93%

“…This finding explained the differences of morphologies betweenour volleyball players and control subjects. This result patially agree with previous studies showing higher height, weight and lean mass among prepubescent boys practicing volleyball [ 17 ], basketball [ 14 ] and judo [ 30 ] than their non-physically active matched peers, and contrasts others among handball [ 31 ] and soccer players [ 32 ]. Contrary to what is known, that the proportion of body fat is usually lower in athlets than in non active subjects [ 33 ], our young volleyball players were found to have higher fat mass than controls at baseline.…”

Section: Discussionsupporting

confidence: 92%

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Volleyball practice increases bone mass in prepubescent boys during growth: A 1-yr longitudinal study

et al. 2022

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The aim of this longitudinal study was to examine the effects of 1-yr of volleyball practice on the bone mass development in the growing skeleton among prepubescent children. Twenty volleyball players and nine teen matched control boys (Tanner stage 1, at the start of the study) were followed over a 1-yr period. Bone mineral density (BMD, g/cm2), bone mineral content (BMC, g) were measured by dual-energy X-ray absorptiometry on the whole body, lumbar spine (L2–L4), legs, arms, femoral necks, hips and radii. At follow-up, in comparison with controls, volleyball players gained more BMD in whole body (4.5% vs 1.7%; p = 0.014), both nondominant and dominant arms (5.8% vs 1.1% p = 0.005, and 6% vs 2.1%; p = 0.003, respectively), both nondmoninat and dominant legs (9% vs 4.8%; p = 0.005 and 10.7% vs 6% p = 0.0025; respectively), dominant ultradistal radius (10.4% vs 0.9%; p = 0.005), dominant third distal radius (9.6% vs 3.71%; p = 0.023), dominant whole radius (7.4% vs 3.1%; p = 0.017), lumbar spine L2-L4 (9.9% vs 2.8%; p = 0.004), femoral neck (4.7% vs 1.6%; p = 0.034), trochanter (6% vs 1.5%; p<0.001) and total hip (6.1% vs 2.6%; p = 0.006). Volleyball players gained more BMC in both nondominant and dominant arms (25.1% vs 13.4%; p = 0.003, and 26.1% vs 15.6%; p<0.001 respectively), both nondominant and dominant legs (20.2% vs 14.5%; p = 0.004 and 23% vs 16%; p = 0.004, respectively), dominant ultradistal radius (22.4% vs 8.7%; p = 0.002), dominant third distal radius (20.9% vs 5.9%; p = 0.001), dominant whole radius (20% vs 13%), nondominant third distal radius (14.5% vs 5.9%; p = 0.001), nondominant whole radius (21.1% vs 12%; p = 0.002), lumbar spine L2-L4 (21.1% vs 13.7%; p = 0.007), femoral neck (25.9% vs 8.7%; p = 0.007), trochanter (23.5% vs 17.1%; p = 0.006), and total hip (16.3% vs 11.3%; p = 0.009) than controls. A close correlation was observed between the increment (Δ) of whole body lean mass and increased (Δ) BMD and BMC in whole body (r = 0.43, p<0.01, r = 0.73, p<0.001; respectively), lumbar spine (r = 0.54, r = 0.61, p<0.001; respectively), trochanter (r = 0.46, p<0.01, r = 0.35, p<0.05; respectively), and total hip (r = 0.53, p<0.01, r = 0.6, p<0.0001; respectively). In summary, 1-yr of volleyball practice has an osteogenic effect on bone mass in loaded sites in prepubescent boys.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 92%

Volleyball practice increases bone mass in prepubescent boys during growth: A 1-yr longitudinal study

et al. 2022

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“…A similar training scheme for children of an average age of ten for 45 to 60 min is presented by Missawi et al [ 30 ]. The warm-up lasts 15–20 min with low-intensity games and stretching exercises, followed by the central part of the training session lasting 20–25 min.…”

Section: Resultsmentioning

confidence: 99%

“…They suggest starting by learning the most straightforward throws (O-soto-gari, O-goshi, De-Ashi-barai and Ko-soto-gari) from the age of seven. The description of the forms of training for the school groups in Krustolovic et al [ 21 ] and Missawi et al [ 30 ], despite the similar division of classes into three parts, differ in their duration. The warm-up time as an introduction to the class varies between 14 and 20 min.…”

Section: General Recommendationsmentioning

confidence: 99%

Principles of Judo Training as an Organised Form of Physical Activity for Children

Kowalczyk

Zgorzalewicz-Stachowiak

Błach

et al. 2022

IJERPH

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When organising judo training for children, it is essential to ensure maximum safety, and use an appropriate training methodology adapted to the age of the youngest judo athletes. This paper aims to review the current literature containing judo training principles and safety-related considerations for preschool (4–6 years) and school-age (7–12 years) children as an organised physical activity. Data were collected until October 2021 from eight international scientific databases (PubMed, Scopus, UpToDate, Web of Science, Cochrane, EBSCOhost, ScienceDirect, Google Scholar). In the overviews, we found various times and frequencies of judo training for children. In preschool, the training time was 30–60 min with a frequency of 2–3 times per week, whereas in the school-age group, the training time was extended from 45 to 90 min 3–4 times per week. The most common injuries included upper arm injuries, followed by those of the lower limbs. In the future, it would be an advantage to systematise the methodology of judo training as an organised form of physical activity that can complement the daily dose of exercises recommended by the World Health Organization for maintaining children’s general health.

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“…Ряд авторов [3; 4; 5; 12; 19] выявили влияние на уровень физической подготовленности атлетов различных факторов: кофеина, процесса снижения веса, агрессии и лругих факторов). В работе Missawi, K., et al [13] показано, что физические наггрузки, применяемые в дзюдо, способствуют формированию более плотной структуры костной ткани у мальчиков. Данное исследование свидетельствует о значительном влиянии физических нагрузок в дзюдо на организм юных атлетов.…”

Section: здоровьеunclassified

Интегральная Методика Физической Подготовки Юных Дзюдоистов На Начальном Этапе

Kozina¹,

Pushkar²,

Ogar³

2018

HSR

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Цель работы: разработать и обосновать интегральную методику физической подготовки дзюдоистов по применению упражнений из других видов спорта. Метериал и методы. В исследованиях принимали участие 30 человек (юные дзюдоисты 10-11 лет) ДЮСШ «ХТЗ». Исследуемых была разделена на контрольную и экспериментальную группы. До начала эксперимента юные дзюдоисты контрольной и экспериментальной групп статистически достоверно не отличались по исследуемым показателям. Разработанная методика применялась в течение шести месяцев (с октября 2017 по март 2018). Юные дзюдоисты контрольной группы тренировались по общепринятой методике развития скоростно-силовых качеств, в свою очередь исследуемые юные борцы ЭГ - по разработанной методике. В экспериментальной группе применялись также упражнения из других видов спорта (спортивные игры, легкая атлетика). Результаты. Экспериментальная методика, ориентированная на акцентированное совершенствование физических качеств с применением средств игровой направленности, средств из других видов спорта (спортивные игры, легкая атлетика), обеспечивает достижение юными дзюдоистами 10-11 лет большого прироста скоростно-силовой выносливости и взрывной силы, чем тренировки, традиционно направлено на развитие двигательных качеств. Выводы. Увеличение объема физических упражнений игрового характера, а также упражнений из других видов спорта (легкая атлетика, спортивные игры) в подготовке юных дзюдоистов следует рассматривать как один из путей повышения эффективности системы спортивной подготовки спортсменов на начальном этапе подготовки. Экспериментальная программа является более эффективной по сравнению с традиционной программой тренировки, которая использовалась в контрольной группе.

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Judo Practice in Early Age Promotes High Level of Bone Mass Acquisition of Growing Boys' Skeleton

Cited by 6 publications

References 31 publications

Volleyball practice increases bone mass in prepubescent boys during growth: A 1-yr longitudinal study

Volleyball practice increases bone mass in prepubescent boys during growth: A 1-yr longitudinal study

Principles of Judo Training as an Organised Form of Physical Activity for Children

Интегральная Методика Физической Подготовки Юных Дзюдоистов На Начальном Этапе

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