Exercise Snacks and Muscular Fitness in Sedentary Young Women (ES)
Effects of a 75-Minute Weekly Exercise Snack on Muscular Fitness in Sedentary Young Women
Visão geral do estudo
Status
Condições
Intervenção / Tratamento
Descrição detalhada
Sedentary behavior is common among university students and may contribute to reduced physical fitness and lower skeletal muscle function. Exercise snacks are short bouts of physical activity performed repeatedly throughout the day and may offer a time-efficient strategy for interrupting prolonged sitting.
This single-center randomized controlled study was conducted at Chongqing Normal University. Sedentary female university students aged 18 to 25 years were screened for eligibility. Participants completed baseline assessments and were randomly allocated to an exercise snacks group, a regular exercise group, or a control group.
The intervention lasted 8 weeks. The exercise snacks group performed short exercise bouts distributed throughout the day, with a total weekly exercise volume of approximately 75 minutes. The regular exercise group performed exercise three times per week, with each session lasting approximately 25 minutes. Both intervention groups received exercise guidance, reminders, adherence monitoring, and ratings of perceived exertion through the Tizhiyun mobile application. The control group maintained their usual study and lifestyle routines without additional study-prescribed exercise.
Primary outcomes included isokinetic muscle strength, surface electromyography, and mid-thigh isometric pull performance. Secondary outcomes included standing long jump, knee push-ups, and bodyweight squats to exhaustion. Outcome assessments were conducted at baseline and after the 8-week intervention. Adherence, perceived exertion, and exercise-related adverse events were recorded during the study period.
Tipo de estudo
Inscrição (Real)
Estágio
- Não aplicável
Contactos e Locais
Locais de estudo
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Chongqing Municipality
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Chongqing, Chongqing Municipality, China, 401331
- Chongqing Normal University
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Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
- Adulto
Aceita Voluntários Saudáveis
Descrição
Inclusion Criteria:
- Female university students aged 18 to 25 years.
- Daily sedentary time of at least 8 hours, assessed using a sedentary behavior questionnaire.
- No contraindications to exercise based on the Physical Activity Readiness Questionnaire.
- No regular exercise participation during the previous 3 months.
Exclusion Criteria:
- Clinical conditions that make participation in exercise inappropriate.
- Substantial body weight fluctuation during the previous 3 months.
- Hypertension, cardiovascular or cerebrovascular disease, or use of related medications.
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
- Finalidade Principal: Outro
- Alocação: Randomizado
- Modelo Intervencional: Atribuição Paralela
- Mascaramento: Nenhum (rótulo aberto)
Armas e Intervenções
Grupo de Participantes / Braço |
Intervenção / Tratamento |
|---|---|
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Experimental: Exercise Snacks Group
Participants received the exercise snacks intervention for 8 weeks.
Exercise was accumulated through short bouts distributed across the day, with a total weekly exercise volume of approximately 75 minutes.
Participants completed approximately 11 minutes of exercise on weekdays and 10 minutes on weekends.
Exercise guidance, reminders, adherence monitoring, and ratings of perceived exertion were provided through the Tizhiyun mobile application.
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Participants performed an 8-week exercise snacks program consisting of short bouts of physical activity distributed across the day.
The program was performed 7 days per week, with approximately 75 minutes of exercise per week.
Participants completed approximately 11 minutes of short exercise on weekdays and 10 minutes on weekends.
Exercise guidance, reminders, adherence monitoring, and ratings of perceived exertion were provided through the Tizhiyun mobile application.
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Comparador Ativo: Regular Exercise Group
Participants received a regular exercise intervention for 8 weeks.
Exercise was completed three times per week, with each session lasting approximately 25 minutes.
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Participants performed an 8-week regular exercise program.
Exercise sessions were completed three times per week on Monday, Wednesday, and Friday, with each session lasting approximately 25 minutes.
Exercise guidance, reminders, adherence monitoring, and ratings of perceived exertion were provided through the Tizhiyun mobile application.
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Sem intervenção: Usual Lifestyle Control Group
Participants maintained their usual study and lifestyle routines during the 8-week study period and did not receive additional study-prescribed exercise.
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O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
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Isokinetic Muscle Strength
Prazo: Baseline and Week 8
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Isokinetic muscle strength was assessed using an isokinetic dynamometer during standardized testing.
Change from baseline to post-intervention was evaluated.
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Baseline and Week 8
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Surface Electromyography Activity
Prazo: Baseline and Week 8
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Surface electromyographic activity was recorded during standardized muscle strength testing to evaluate neuromuscular activation.
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Baseline and Week 8
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Mid-Thigh Isometric Pull
Prazo: Baseline and Week 8
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Maximal force generated during a standardized mid-thigh isometric pull test was assessed to evaluate whole-body isometric strength.
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Baseline and Week 8
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Medidas de resultados secundários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
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Standing Long Jump
Prazo: Baseline and Week 8
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Standing long jump distance was assessed using a standardized test of lower-body explosive performance.
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Baseline and Week 8
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Knee Push-Ups
Prazo: Baseline and Week 8
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The number of correctly completed knee push-up repetitions was assessed using a standardized muscular endurance test.
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Baseline and Week 8
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Bodyweight Squats to Exhaustion
Prazo: Baseline and Week 8
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The number of correctly completed bodyweight squats performed to volitional exhaustion was assessed as an indicator of lower-body muscular endurance.
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Baseline and Week 8
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Colaboradores e Investigadores
Patrocinador
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo (Real)
Conclusão Primária (Real)
Conclusão do estudo (Real)
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Primeira postagem (Real)
Atualizações de registro de estudo
Última Atualização Postada (Real)
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Mais Informações
Termos relacionados a este estudo
Termos MeSH relevantes adicionais
Outros números de identificação do estudo
- CSK2026051
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