Strength Training and Modified CrossFit in Older Adults: a Comparative Perspective
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 60
- 试验地点
- 2
- 主要终点
- Timed Up and Go (TUG), seconds
研究概览
简要总结
This randomized, parallel-group clinical trial evaluates a 12-week adapted CrossFit program versus usual activity in community-dwelling older adults. The primary endpoint is change in Timed Up and Go (TUG) from baseline to 12 weeks. Secondary outcomes include Functional Reach (FRT), Romberg (eyes closed), gait velocity, stride length, and lower-limb power tests (Chair-Stand, Stair Ascent, Stair Descent; time and W/kg). Sixty participants were randomized (1:1). Analyses used repeated-measures ANOVA with Bonferroni adjustments and Cohen's d effect sizes.
详细描述
Participants were screened and randomized (1:1) to an adapted CrossFit program (12 weeks) or to maintain usual activities (no structured training). Baseline characterization included demographics, anthropometrics, Mini-Mental State Examination (MMSE ≥ 26), physical activity level, and handgrip strength. Balance outcomes: Romberg (s, eyes closed), gait velocity (m/s), stride length (cm), TUG (s), and FRT (cm). Lower-limb power: Chair-Stand (s; W/kg), Stair Ascent/Descent (s; W/kg). Statistical analysis: normality (Shapiro-Wilk), homogeneity (Levene), repeated-measures ANOVA with Bonferroni post-hoc, and Cohen's d effect sizes. A priori sample size (G*Power 3.1): effect size 0.25, α = 0.05, power 0.80 → target n = 60 to account for attrition.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- Single (Outcomes Assessor)
入排标准
- 年龄范围
- 65 Years 至 80 Years（Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Community-dwelling older adults able to walk independently without assistance.
- •Cognitive function preserved, defined as a score of 26 points or higher on the Mini-Mental State Examination.
- •Absence of severe health conditions that would interfere with participation in exercise training.
排除标准
- •Presence of active neuromuscular or musculoskeletal disorders that prevent safe exercise participation.
- •Severe cardiovascular, pulmonary, or metabolic disease that contraindicates moderate-intensity exercise.
- •Any other medical or psychological condition that, in the opinion of the investigators, would make participation unsafe or unreliable.
结局指标
主要结局
Timed Up and Go (TUG), seconds
时间窗: Baseline and Week 12
Change in functional mobility. Shorter time indicates better performance and reduced risk of falls.
次要结局
- Functional Reach Test (FRT)(Baseline and 12 weeks)
- Fear of Falling (Falls Efficacy Scale-International, FES-I)(Baseline and week 12)
- Chair-Stand Test (CST)(Baseline and 12 weeks)
- Sleep Quality (Pittsburgh Sleep Quality Index, PSQI)(Baseline and week 12)
- Stride Length, centimeters(Baseline and week 12)
- Anxiety and Depression (Hospital Anxiety and Depression Scale, HADS)(Baseline and week 12)
- Gait Velocity, meters per second(Baseline and week 12)
- Kinesiophobia (Tampa Scale of Kinesiophobia, TSK)(Baseline and week 12)
研究者
DAVID CRUZ DÍAZ
Principal investigator
University of Jaén