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Effects of a 6-Month Gymnastics Program on Somatotype and Motor Performance in Children Across Age Groups (Motor Progress)

26 de maio de 2026 atualizado por: Ahmet KURTOĞLU, Bandırma Onyedi Eylül University
The study adopted a controlled 6-month study design to compare the gymnastics group (n= 56) with the inactive control group (n=88). Anthropometric profiling, somatotype assessment, and motor performance tests were conducted pre- and post-intervention

Visão geral do estudo

Status

Concluído

Condições

Intervenção / Tratamento

Descrição detalhada

The study design for the present investigation was prospective, controlled, and observational with a duration of 6 months. The repeated measures design approach has been used to assess the neuromuscular and morphological adaptations (Pre-test vs. Post-test) for the gymnastics and inactive groups. The intervention and observation period for the study was 2 days x 24 weeks.

To ensure high internal validity and to minimize the effects of circadian rhythm changes, all pre- and post-test assessments were conducted during the morning hours, between 09:00 and 11:30 AM, under similar environmental conditions (temperature and humidity). Prior to the pre-test, standardized pre-test procedures were clearly explained to the participants and their parents. Children were instructed to adhere to their routine sleeping habits (minimum 8 hours of sleep) and abstain from any strenuous physical activity and sports for at least 24 hours prior to the pre- and post-test assessments.

With regard to the standardized nutritional conditions, the participants were instructed to adhere to their routine diet but abstain from heavy meals for at least 2 hours prior to the pre- and post-test assessments. Participants were allowed to drink water ad libitum up to 30 minutes prior to the assessments.

On the assessment days, a logical and non-fatiguing sequence of the pre- and post-test assessments was strictly followed. Non-invasive anthropometric assessments such as stature, body mass, skinfolds, girths, and breadths were conducted for all the participants, while they were in a rested and non-sweated condition. After the anthropometric assessments, the participants were administered a standardized 10-minute dynamic warm-up procedure by a certified strength and conditioning specialist. Subsequently, the motor performance tests were conducted. To prevent the participants from fatigue, the physical tests were conducted from the least to the most fatiguing, from flexibility to muscular endurance and sprint capacity, with strict adherence to the intervening time of 3-5 minutes between the assessments

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Tipo de estudo

Intervencional

Inscrição (Real)

144

Estágio

  • Não aplicável

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Locais de estudo

      • Astana, Cazaquistão
        • Kazakh National University of Sports

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

  • Filho

Aceita Voluntários Saudáveis

Sim

Descrição

Inclusion Criteria:

  • For Experimental Group: Active and continuous participation in a gymnastics program during the entire 6-month period.
  • Inactive control group : comprised participants who did not practice any form of sports, athletics, and physical training outside their usual physical education classes at school.

Exclusion Criteria:

  • the presence of any chronic metabolic, cardiovascular, and endocrine disorders;
  • a history of severe musculoskeletal injuries and orthopedic surgeries within the past year;
  • the use of medications known to have a significant impact on body composition and physical performance; and
  • an attendance rate of less than 85% for the gymnastics sessions (only for the intervention group).

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Finalidade Principal: Tratamento
  • Alocação: Randomizado
  • Modelo Intervencional: Atribuição Paralela
  • Mascaramento: Solteiro

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Experimental: Grupo experimental
Gymnastic Training for six month
Sem intervenção: Grupo de controle

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Circumferences (Girths) Measurements
Prazo: 6 month
Girth measurements were taken to the nearest 0.1 cm using a flexible, non-stretchable anthropometric tape measure (Lufkin W606PM, Apex Tool Group). The measured girths included the head, neck, shoulder, chest, waist, hip, relaxed arm, forearm, thigh, maximum calf, and ankle circumferences. Care was taken to ensure the tape measure was at a right angle to the long axis of the body segment and did not compress the subcutaneous tissue.
6 month
Skinfold Thickness Measurements
Prazo: 6 month
Skinfold thicknesses were measured to the nearest 0.1 mm using a Harpenden skinfold caliper (Baty International, West Sussex, UK). Measurements were taken in duplicate at nine standardized sites: triceps, subscapular, biceps, chest, axillary, abdominal, suprailiac, anterior thigh, and medial calf. If the difference between the first two measurements exceeded 5%, a third measurement was taken, and the median value was recorded for analysis. Furthermore, to obtain a comprehensive and robust quantification of total subcutaneous adiposity, the sum of all nine measured skinfolds (Σ9SF) was calculated. In pediatric kinanthropometry, the absolute sum of multiple skinfold sites is widely recognized as a highly reliable proxy for total body fatness, as it circumvents the inherent biological maturation errors and prediction biases associated with population-specific body density and body fat percentage equations.
6 month
Waist-to-Height Ratio
Prazo: Six Month
Calculated by dividing waist circumference (cm) by standing height (cm). This ratio serves as a highly validated, age-independent proxy for central adiposity and health risk in pediatric populations.
Six Month
Segment Lengths and Bone Breadths Measurements
Prazo: Six Month
Segment lengths (arm span, total arm, forearm, total leg, thigh, tibia, and foot lengths) were measured using a segmometer and anthropometric tape to the nearest 0.1 cm. Skeletal breadths were measured to the nearest 0.1 cm using a sliding spreading caliper. The breadth measurements included the shoulder, biacromial, biiliac, bitrochanteric, knee (biepicondylar femur), elbow (biepicondylar humerus), and wrist.
Six Month
Body Fat (BF) and Fat-Free Mass
Prazo: six month
Relative body fat percentage (BF%) was estimated using the pediatric-specific skinfold equations developed by Slaughter et al. Specifically, this calculation utilized the sum of the triceps and subscapular skinfold thicknesses, adjusted for biological sex and maturation, which is considered the gold standard for clinical field assessments in youth. Subsequently, total body fat mass was determined, and absolute Fat-Free Mass (FFM in kg) was calculated by subtracting this estimated fat mass from the total body mass.
six month
Skeletal Muscle Mass
Prazo: six month
Total skeletal muscle mass (kg) was estimated by employing validated anthropometric prediction models for children and adolescents, which account for standing height as well as corrected limb girths (i.e., thigh, calf, and arm circumferences that have been corrected for their respective overlying subcutaneous adipose tissue thicknesses).
six month
Arm Muscle Area
Prazo: six month
AMA was calculated to estimate regional upper-body muscularity and protein reserves. AMA (cm²) was derived from relaxed arm girth (cm) and triceps skinfold thickness (cm) using the standard anthropometric equation
six month
Somatotype
Prazo: six month

The anthropometric somatotype components, namely endomorphy, mesomorphy, and ectomorphy, were calculated according to the Heath-Carter method [17, 24].

Endomorphy was estimated based on the height-adjusted sum of three skinfold thicknesses: triceps, subscapular, and suprailiac.

six month
Motor Performance Tests
Prazo: six month

Flexibility (Sit and Reach Test):

Lower-Body Explosive Power:

Muscular Endurance:

Speed (20-m Sprint):

six month
Body Composition
Prazo: 6 months

Endomorphy was estimated based on the height-adjusted sum of three skinfold thicknesses: triceps, subscapular, and suprailiac.

Mesomorphy was determined using humerus (elbow) breadth, femur (knee) breadth, height, and corrected limb girths. Corrected arm girth (CAG) and corrected calf girth (CCG) were adjusted for the corresponding skinfold thicknesses.

Ectomorphy was derived from the Height-Weight Ratio (HWR), which was calculated as height divided by the cube root of body mass.

6 months
Weight
Prazo: 6 Month
Participants were assessed barefoot and wearing minimal clothing. Participants' body weight was measured using a Seca (Seca GmbH, Hamburg, Germany) scale with an accuracy of 0.1 kg.
6 Month
Height
Prazo: 6 month
Participants' height was measured using a Seca (Seca GmbH, Hamburg, Germany) stadiometer with an accuracy of 0.1 cm.
6 month
Body Mass Index
Prazo: 6 month
Participants' body mass indices (BMI) were calculated using the weight/height² formula (kg/m² ).
6 month

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Real)

1 de janeiro de 2025

Conclusão Primária (Real)

1 de junho de 2025

Conclusão do estudo (Real)

1 de junho de 2025

Datas de inscrição no estudo

Enviado pela primeira vez

5 de maio de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

26 de maio de 2026

Primeira postagem (Real)

29 de maio de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

29 de maio de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

26 de maio de 2026

Última verificação

1 de janeiro de 2025

Mais Informações

Termos relacionados a este estudo

Outros números de identificação do estudo

  • BanirmaOnyediEylulU

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

SIM

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Não

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .