The Effects of Plyometric or Resistance Training on Muscle and Tendon Stiffness, and Functional Performance in Older Adults
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 48
- 试验地点
- 1
- 主要终点
- Change in Quadriceps Muscle Stiffness measured by Kilopascals
研究概览
简要总结
This study will compare the effects of high-speed power resistance training or plyometric jump training on muscle stiffness, jump performance and measures of daily activity in older adults living independently in the community.
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
- None
入排标准
- 年龄范围
- 55 Years 至 90 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Independently living
- •Between 55-90 years of age
排除标准
- •Uncontrolled cardiovascular disease that prevents participation in a training program.
- •Documented HIV infection or another immunodeficiency syndrome.
- •Current neuromuscular diseases that prevent exercise.
- •Current musculoskeletal injury that prevents exercise.
- •Incarcerated individuals
- •Montreal Cognitive Assessment (MoCA) Score below 18
研究组 & 干预措施
Plyometric Training
Participants in this group will receive plyometric training for up to 12 weeks.
干预措施: Plyometric Training (Behavioral)
Power Resistance Training
Participants in this group will receive power resistance training for up to 12 weeks.
干预措施: Power Training (Behavioral)
结局指标
主要结局
Change in Quadriceps Muscle Stiffness measured by Kilopascals
时间窗: Baseline, 10 weeks
For muscle stiffness, three images will be taken in the longitudinal view in shear wave mode to assess stiffness of the vastus lateralis, vastus medialis and rectus femoris muscles. Color-coded images with a scale from blue (soft) to red (hard) will then be generated depending on muscle stiffness. Imaging software will then convert the wave speed data into a stiffness measures called kilopascals.
Change in Triceps Surae Muscle Stiffness measured by Kilopascals
时间窗: Baseline, 10 weeks
For muscle stiffness, three images will be taken in the longitudinal view in shear wave mode to assess stiffness of the gastrocnemius lateralis, gastrocnemius medialis and soleus muscles. Color-coded images with a scale from blue (soft) to red (hard) will then be generated depending on muscle stiffness. Imaging software will then convert the wave speed data into a stiffness measures called kilopascals.
Change in Quadriceps Tendon Stiffness measured by Kilopascals
时间窗: Baseline, 12 weeks
For tendon stiffness, three images will be taken in the longitudinal view in shear wave mode to assess stiffness of the quadriceps tendon. Color-coded images with a scale from blue (soft) to red (hard) will then be generated depending on tendon stiffness. Imaging software will then convert the wave speed data into a stiffness measures called kilopascals.
Change in Patellar Tendon Stiffness measured by Kilopascals
时间窗: Baseline, 12 weeks
For tendon stiffness, three images will be taken in the longitudinal view in shear wave mode to assess stiffness of the patellar tendon. Color-coded images with a scale from blue (soft) to red (hard) will then be generated depending on tendon stiffness. Imaging software will then convert the wave speed data into a stiffness measures called kilopascals.
Change in Achilles Tendon Stiffness measured by Kilopascals
时间窗: Baseline, 12 weeks
For tendon stiffness, three images will be taken in the longitudinal view in shear wave mode to assess stiffness of the Achilles tendon. Color-coded images with a scale from blue (soft) to red (hard) will then be generated depending on tendon stiffness. Imaging software will then convert the wave speed data into a stiffness measures called kilopascals.
Changes in Stored Elastic Energy measured by joules
时间窗: Baseline, 12 weeks
For assessment of stored elastic energy, subjects will perform a Squat Jump and a Countermovement Jump on the force platform. The Squat Jump will be performed with the subject starting in a squatted position at the knee angle of approximately 90 degrees. The subject will hold that position for 1-2 s, and then jump into the air with maximal effort. For the Countermovement Jump, the subject will start in an upright position, rapidly squat down and then jump into the air with maximal effort. For both jumps, subject's hand will be held at the waist to eliminate the effect resulting from arm swing during jump performance. For each jump, three trials will be conducted with 1 min rests between trials. For safety, an experienced assistant will stand alongside each subject while performing the test to prevent injury. Energy will be measured in Joules.
Change in Gait Economy
时间窗: Baseline, 12 weeks
Gait Economy will be measured using oxygen consumption on a treadmill at each subject's usual walking speed, one-half of the maximal walking speed, and 75% of the maximal walking speed. Each bout will last 5 minutes, with a 3-minute standing rest between bouts. Oxygen consumptions for the last 2 minutes of each bout will be used to compute energy cost and determine gait economy. Gait economy will be assessed as the oxygen used at each of the three walking speeds measured in milliliters of oxygen per kilogram of body weight per minute.
次要结局
- Change in Muscle Quality measured using grayscale(Baseline, 12 weeks)
- Change in Muscle Thickness measured in centimeters(Baseline, 12 weeks)
- Change in Time for the Five Times Sit-to-Stand Test.(Baseline, 12 weeks)
- Change in neuromuscular performance as measured by 1-repetition maximum (1RM).(Baseline, 12 weeks)
- Change in the Speed of the Ten-Meter Walk Test.(Baseline, 12 weeks)
- Change in Distance of the Seated Medicine Ball Throw.(Baseline, 12 weeks)
- Changes in the Six-Minute Walk Test.(Baseline, 12 weeks)
- Change in the time required to complete the timed Up-and-Go Test.(Baseline, 12 weeks)
- Change in neuromuscular performance as measured by Watts(Baseline, 12 weeks)
研究者
Joseph Signorile
Professor
University of Miami