Hybrid Exercise Training for Health, Performance and Well-Being (DoIT II)
Condition: High-Intensity Interval Training; Body Composition; Performance; Habitual Physical Activity
Study type: Interventional

Summary: 
      Observing a lack of research investigating the chronic physiological and psychological
      responses to this type of exercise training the aim of this study is to investigate the
      optimal training configurations of DoIT to produce positive effects on health, performance
      and quality of life markers in sedentary overweight or obese adults aged 30-55 years. The
      DoIT program will be performed in a small-group setting indoor or outdoor implementing a
      progressive manner for 12 months and using bodyweight exercises with alternative modes.
    

Detailed description: 
      This controlled, randomized, four-group, repeated-measures clinical trial will be consisted
      of the following stages:

        1. Initial testing: body weight and height, RMR, daily physical activity (PA), daily
           nutritional intake.

        2. a 4-week adaptive period: based on a dietary analysis, participants will be given a
           dietary plan (considering the RMR and total daily physical activity related energy
           expenditure), providing an isocaloric diet over the initial 4-week adaptive period.
           During this adaptive period, volunteers will also be familiarized with exercises
           techniques and overload patterns that will be used throughout the study through 4
           preparatory sessions.

        3. At the end of the adaptation period, participants will participate in assessment
           procedures (baseline testing) at University facilities.

        4. After the adaptive period all participants will be randomly assigned to four groups
           (control, 1 session/week, 2 sessions/week, 3 sessions/week). The exercise protocols that
           will be used throughout the 1-year intervention will be consisted of 8-12 neuromotor
           exercises in circuit fashion applying prescribed time (15-45 sec) of effort and passive
           recovery intervals.

        5. After 12 months of exercise intervention all participants will participate in assessment
           procedures (post-training testing) at University facilities within 5 days after the
           completion of the last training session.

      All participants will be randomly assigned to the following four groups:

        1. Control group (no training)

        2. DoIT-1 (1 session/week)

        3. DoIT-2 (2 sessions/week)

        4. DoIT-3 (3 sessions/week)
    

Intervention name(s): DoIT-1; DoIT-2; DoIT-3; Control
Intervention type(s): Behavioral; Behavioral; Behavioral; Behavioral
Intervention description(s): A hybrid small-group (5-10 participants/session) training modality, that combines interval training, circuit-based resistance exercise and functional training and performed according to a periodized model of exercise prescription as an alternative approach for weight management, health, performance and well-being. DoIT will be performed once per week on non-consecutive days for 12 months.; A hybrid small-group (5-10 participants/session) training modality, that combines interval training, circuit-based resistance exercise and functional training and performed according to a periodized model of exercise prescription as an alternative approach for weight management, health, performance and well-being. DoIT will be performed twice per week on non-consecutive days for 12 months.; A hybrid small-group (5-10 participants/session) training modality, that combines interval training, circuit-based resistance exercise and functional training and performed according to a periodized model of exercise prescription as an alternative approach for weight management, health, performance and well-being. DoIT will be performed thrice per week on non-consecutive days for 12 months.; No training will be performed during a 1-year period. Participation only in measurements.
Other intervention name(s): Hybrid Interval Training; Hybrid Interval Training; Hybrid Interval Training
Allocation: Randomized
Intervention model: Parallel Assignment
Masking: None (Open Label)
Primary purpose: Basic Science
Keywords: functional training; circuit training; interval training; neuromuscular training