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OpenTrials
Completed

NCT Number: NCT07199114

Crossfit in Special Population

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.

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Key information

Conditions

Postural Balance Aging Strength Training Adaptations

Age range

65 year–80 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

University of Jaén

Jaén, JAEN, 23009, Spain

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

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.

Exclusion criteria

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.

Treatment and study plan

Adapted CrossFit Program (12 weeks)

Behavioral

Supervised sessions focused on functional, multi-joint movements adapted for older adults; emphasis on safety and progressive overload.

Primary outcomes

  1. Timed Up and Go (TUG), seconds

    Time frame: Baseline and Week 12

    Change in functional mobility. Shorter time indicates better performance and reduced risk of falls.

Secondary outcomes

  1. Functional Reach Test (FRT)

    Time frame: Baseline and 12 weeks

    Change in dynamic balance assessed by the distance a participant can reach forward without losing stability. Greater distance indicates better balance.

  2. Chair-Stand Test (CST)

    Time frame: Baseline and 12 weeks

    Sit-to-stand repetitions (5 times). Lower time and higher relative power indicate better lower-limb strength and functional capacity.

  3. Fear of Falling (Falls Efficacy Scale-International, FES-I)

    Time frame: Baseline and week 12

    Self-reported concern about falling during daily activities. Higher scores indicate greater fear of falling.

  4. Sleep Quality (Pittsburgh Sleep Quality Index, PSQI)

    Time frame: Baseline and week 12

    Subjective sleep quality over the previous month. Higher scores indicate poorer sleep quality.

  5. Anxiety and Depression (Hospital Anxiety and Depression Scale, HADS)

    Time frame: Baseline and week 12

    Symptoms of anxiety and depression measured with HADS. Higher subscale scores indicate greater severity.

  6. Gait Velocity, meters per second

    Time frame: Baseline and week 12

    Walking speed measured over a standardized distance. Higher speed indicates better mobility.

  7. Stride Length, centimeters

    Time frame: Baseline and week 12

    Average step length during gait assessment. Longer stride indicates better gait performance.

  8. Kinesiophobia (Tampa Scale of Kinesiophobia, TSK)

    Time frame: Baseline and week 12

    Fear of movement measured with the Tampa Scale. Higher scores indicate greater kinesiophobia.

Sponsors and collaborators

Lead sponsor

University of Jaén

Other

Registry information

Official study title

Strength Training and Modified CrossFit in Older Adults: a Comparative Perspective

Acronym: CrossfitUJA

Important dates

Study start
2025
Primary completion
2025
Study completion
2025
First posted
Sep 30, 2025
Registry last updated
Sep 30, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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