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Development and Strategic Research of Practical Applications in Sports Nutrition

16 de mayo de 2026 actualizado por: Yi-Ju Hsu, National Taiwan Sport University
This study evaluates the practical feasibility and potential effects of an 8-week dairy product intervention in physically active adults aged 18-39 years. Participants will consume a dairy product enriched with high protein, calcium, and vitamin D under real-life conditions. Assessments will be conducted before the intervention, after 4 weeks, and after 8 weeks, including subjective perception questionnaires, body composition analysis, and functional physical performance tests. The study aims to examine changes in physical status, functional capacity, and user experience during continuous product use.

Descripción general del estudio

Estado

Aún no reclutando

Condiciones

Intervención / Tratamiento

Descripción detallada

With increasing awareness of regular exercise and health promotion, sports nutrition products have become a common supplementation choice among physically active populations. In real-world settings, these products are typically consumed continuously as part of daily life. Evaluating changes in physical status, functional physical performance, and users' subjective perceptions during actual use therefore requires research designs that closely reflect everyday living conditions.

This study recruits physically active adults aged 18-39 years and conducts an 8-week intervention involving the consumption of a dairy product enriched with high protein, calcium, and vitamin D. A pre-, mid-, and post-intervention design is employed, integrating subjective perception questionnaires, body composition analysis, and functional physical performance assessments to evaluate changes in physical status, functional capacity, and subjective experiences throughout the intervention period. Through this multi-dimensional evaluation approach, the study aims to examine the practical feasibility and application value of the product in real-life settings and to provide evidence to support sports nutrition practice and future research.

Tipo de estudio

Intervencionista

Inscripción (Estimado)

50

Fase

  • No aplica

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Estudio Contacto

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

  • Adulto

Acepta Voluntarios Saludables

Sí

Descripción

Inclusion Criteria:

  • Aged 18-39 years.
  • Have regular exercise habits, defined as exercising at least three times per week, with each session lasting no less than 30 minutes. Exercise intensity should reach a heart rate of approximately ≥130 beats/min or a perceived intensity characterized by noticeable breathlessness and sweating.
  • Preferably, at least one exercise session per week should include resistance training.
  • Participants must be able to consume dairy products and have no lactose intolerance.

Exclusion Criteria:

  • Individuals with lactose intolerance or an allergy to dairy products.
  • Individuals who are pregnant, planning to become pregnant, or breastfeeding.
  • Individuals with a smoking habit.
  • Individuals diagnosed by a physician with cardiovascular disease, hypertension, metabolic disease, asthma, or kidney disease.
  • Individuals with a body mass index (BMI) ≥27.
  • Individuals who have experienced limb or neuromuscular exercise-related injuries within the past 6 months that prevent them from engaging in regular exercise.

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Ciencia básica
  • Asignación: N / A
  • Modelo Intervencionista: Asignación de un solo grupo
  • Enmascaramiento: Ninguno (etiqueta abierta)

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: Dairy intervention group
An 8-week high-protein, high-calcium, and vitamin D-enriched dairy intervention.
An 8-week high-protein, high-calcium, and vitamin D-enriched dairy intervention.

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Questionnaire-based subjective assessment
Periodo de tiempo: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Participants' subjective physical sensations, post-exercise fatigue, body image perceptions, and product use experience will be assessed using individual items from a self-administered questionnaire developed for this study. Questionnaire items may include Likert-scale items, categorical response options, and open-ended responses. Likert-scale items will be reported separately according to their original response scale, with the minimum and maximum values specified for each item. Categorical items will be reported as the number and percentage of participants selecting each response option. Open-ended responses will be summarized descriptively. No overall questionnaire total score will be calculated.
The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Handgrip Strength Test
Periodo de tiempo: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Participants performed the test in a standing position with their arms naturally hanging down. They held the handgrip dynamometer with one hand and applied maximal force continuously for at least 3 seconds. Each hand was tested three times, and the best value was recorded.
The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Push-Up Test
Periodo de tiempo: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Participants performed the push-up test on an exercise mat, with both hands placed shoulder-width apart to support the body. The fingers pointed forward, the elbows were fully extended, and the feet were approximately 10 cm apart. Male participants performed the test with support from the feet, whereas female participants performed the modified version with support from the knees. Participants were instructed to complete as many repetitions as possible while maintaining proper form. The test was terminated when the movement no longer met the required standard or could not be continued.
The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Curl-Up Test
Periodo de tiempo: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.

Participants lay supine on an exercise mat with both knees bent and feet flat on the floor. They performed curl-ups according to a fixed rhythm. Participants were instructed to complete as many repetitions as possible while maintaining proper form.

When a participant failed to perform the movement correctly once, the examiner raised one hand and indicated the number "one." If the participant failed a second time, the examiner indicated the number "two." The test was terminated when the participant failed twice or completed 75 repetitions. If the participant was unable to maintain the required rhythm or perform the movement according to the standard criteria, the test was stopped.

The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Three-Minute Progressive Step-in-Place Test
Periodo de tiempo: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.

Participants performed step-in-place movements according to the instructions and raised their knees to the designated height. The test lasted for 3 minutes, with an initial cadence of 96 beats per minute, which was progressively increased each minute.

During the test, heart rate was recorded using a heart rate monitor before exercise, during exercise, and during the post-exercise recovery period.

The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Body weight
Periodo de tiempo: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Body weight will be measured using the InBody 570 bioelectrical impedance analyzer (InBody, Seoul, South Korea) and reported in kilograms (kg).
The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Body mass index
Periodo de tiempo: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Body mass index (BMI) will be calculated from body weight and height and reported in kilograms per square meter (kg/m^2).
The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Body fat percentage
Periodo de tiempo: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Body fat percentage will be measured using the InBody 570 bioelectrical impedance analyzer (InBody, Seoul, South Korea) and reported as a percentage (%).
The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Fat mass
Periodo de tiempo: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Fat mass will be measured using the InBody 570 bioelectrical impedance analyzer (InBody, Seoul, South Korea) and reported in kilograms (kg).
The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Skeletal muscle mass
Periodo de tiempo: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Skeletal muscle mass will be measured using the InBody 570 bioelectrical impedance analyzer (InBody, Seoul, South Korea) and reported in kilograms (kg).
The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Skeletal muscle percentage
Periodo de tiempo: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Skeletal muscle percentage will be measured using the InBody 570 bioelectrical impedance analyzer (InBody, Seoul, South Korea) and reported as a percentage (%).
The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Waist-to-hip ratio
Periodo de tiempo: The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.
Waist-to-hip ratio will be measured using the InBody 570 bioelectrical impedance analyzer (InBody, Seoul, South Korea) and reported as a ratio.
The testing time points are set as follows: before the intervention, after 4 weeks of intervention, and after 8 weeks of intervention.

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Patrocinador

Investigadores

  • Investigador principal: Yi-Ju Hsu, Professor, National Taiwan Sport University

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Estimado)

1 de junio de 2026

Finalización primaria (Estimado)

1 de septiembre de 2026

Finalización del estudio (Estimado)

1 de septiembre de 2026

Fechas de registro del estudio

Enviado por primera vez

8 de mayo de 2026

Primero enviado que cumplió con los criterios de control de calidad

16 de mayo de 2026

Publicado por primera vez (Actual)

20 de mayo de 2026

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

20 de mayo de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

16 de mayo de 2026

Última verificación

1 de mayo de 2026

Más información

Términos relacionados con este estudio

Otros números de identificación del estudio

  • NTSUIRB-115-010

Información sobre medicamentos y dispositivos, documentos del estudio

Estudia un producto farmacéutico regulado por la FDA de EE. UU.

No

Estudia un producto de dispositivo regulado por la FDA de EE. UU.

No

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .