Effects of a Protein-Based Multi-Ingredient Pre-Workout Supplement on Body Composition, Performance, Perceptual Responses, Energy Feelings and Muscular Properties, in Middle-Aged and Older Adults.
试验速览
- 阶段
- 不适用
- 状态
- 尚未招募
- 发起方
- 入组人数
- 40
- 试验地点
- 2
- 主要终点
- Chest Medicine Ball Throw
研究概览
简要总结
The investigation will be conducted as a double blinded, randomized, parallel between treatment conditions comparison design with two different groups ingesting a different supplement each one.
详细描述
Following inclusion, familiarization and baseline assessments, the participants will be randomly allocated to receive either a multi-ingredient, pre-workout supplement (PREW) or maltodextrin (CHO). Thereafter, the participants will follow a 6-weeks resistance training mesocycle, involving three resistance training sessions (Monday, Wednesday and Friday) per week (18 sessions in total). Before and after the 6 weeks of intervention, the following assessments will be performed: (i) Body composition (fat mass and fat-free mass) via air displacement plethysmography (BodPod); (ii) muscle contractile properties on Vastus Medialis and Anterior Deltoids (via Tensiomyography; (iii) muscle structure of the Vastus Lateralis of the Quadriceps and the Elbow Flexors of dominant extremities via Ultrasound; (iv) Maximal Isometric Strength (Isometric Mid-Thigh Pull); (v) Upper and Lower Body Muscular Power (Medicine Ball Throw and Vertical Jump), (vi) Upper and Lower Muscular Endurance (30-Seconds Sit-to-Stand and 30-Seconds 16RM Bench Press), (vii) Immune System (via HemoCue WBC DIFF System).
The supplements will be ingested 15 min before each training session.
Energy Feeling Questionnaire will be filled immediately before warming up.
In addition, Rate of Perceived Exertion to training will be assessed 15 min after the completion of all workouts.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
入排标准
- 年龄范围
- 45 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Healthy (no injuries, illnesses or medication intake).
- •Between 45 and 65 years old.
- •Active and familiarised with Resistance Training.
排除标准
- •Unhealthy (illnesses or medication intake) or injured.
- •Untrained.
- •Young (<45 y.o.) or elderly (>65 y.o.).
结局指标
主要结局
Chest Medicine Ball Throw
时间窗: Changes from 3 days previous to, and 3 days after the completion of the 6-weeks training program
Medicine Ball Throw (measured in meters and centimetres).
Tensiomyography
时间窗: Changes from 3 days previous to, and 3 days after the completion of the 6-weeks training program
A TMG portable device (TMG Measurement System, 146 TMG-BMC Ltd., Ljubljana, Slovenia) with a maximal stimulation output of 110 mA·ms-1 IS used to evaluate the contractile properties of the Anterior Deltoid (AD) of the dominant limb. Changes in the evoked muscular contractile properties are estimated by analysing maximal radial displacement of the muscle belly in millimetres (Dm).
Muscle Thickness
时间窗: Changes from 3 days previous to, and 3 days after the completion of the 6-weeks training program
Thickness of the Vastus Lateralis and the Elbow Flexors of the dominant limbs
Vertical Jump
时间窗: Changes from 3 days previous to, and 3 days after the completion of the 6-weeks training program
Height (measured in centimetres)
Maximal Mid-Thigh Pull Isometric Strength
时间窗: Changes from 3 days previous to, and 3 days after the completion of the 6-weeks training program
Maximal Strength (measured in kilograms).
Whole Body Perceptual Response during Resistance Training
时间窗: Changes from 3 days previous to, and 3 days after the completion of the 6-weeks training program
Self Rate of Perceived Exertion (RPE) will be assessed via OMNI RES Scale (0-10 values) during resistance training (after every circuit) and 15-20 minutes after finishing each session.
Self Perceived Energy Feeling
时间窗: Changes from 3 days previous to, and 3 days after the completion of the 6-weeks training program
All participants will fill a short questionnaire (from 1 to 5 points) about their perception of energy before every training. Energy Feeling will be assessed (Evergy level, Fatigue Level, Feeling of Alertness, and Feeling of Focus for the task, valued from 1 = low energy to 5 = high energy).
次要结局
- White Blood Cells count(Changes from 3 days previous to, and 3 days after the completion of the 6-weeks training program)
研究者
Joel Puente
Principal Investigator
University of Greenwich