NCT07690085

Brief Summary

This study evaluates the effects of caffeine, Rhodiola rosea, and their combined supplementation on dancesport-specific performance in male collegiate dancesport athletes. Forty-eight healthy male athletes aged 18 to 23 years will be randomly assigned to one of four groups: placebo control, caffeine, Rhodiola rosea, or combined Rhodiola rosea plus caffeine. All participants will complete the same four-week standardized cowboy-dance-specific training program. The caffeine group will receive caffeine at 3 mg·kg-¹ before testing, the Rhodiola rosea group will receive Rhodiola rosea at 2.4 g·day-¹ for four weeks, and the combined group will receive both supplementation strategies. The main purpose of this study is to determine whether these supplementation strategies improve cowboy-dance-specific explosive power, movement stability, repeated kicking performance, agility, muscular endurance, and perceived exertion. Main outcomes include the 180-degree kick straight angle, kick recoil angle, trunk anterior-posterior sway amplitude, and 30-second cowboy-kick success rate. Secondary outcomes include qualified kick count, balance, core stability, functional strength, rhythm accuracy, agility tests, hexagon jump performance, and session-RPE.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
48

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Apr 2026

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

April 15, 2026

Completed
2 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 10, 2026

Completed
8 days until next milestone

Study Completion

Last participant's last visit for all outcomes

June 18, 2026

Completed
12 days until next milestone

First Submitted

Initial submission to the registry

June 30, 2026

Completed
8 days until next milestone

First Posted

Study publicly available on registry

July 8, 2026

Completed
Last Updated

July 8, 2026

Status Verified

June 1, 2026

Enrollment Period

2 months

First QC Date

June 30, 2026

Last Update Submit

July 1, 2026

Conditions

Keywords

DancesportCowboy danceCaffeineRhodiola roseaCombined supplementationExercise performanceExplosive powerMovement stabilityMuscular enduranceAgilitySession-RPE

Outcome Measures

Primary Outcomes (4)

  • 180-degree kick straight angle

    Maximum knee extension angle during the standardized cowboy-dance kick task. Higher values indicate better kick extension quality.

    Baseline and immediately after 4-week intervention

  • Kick recoil angle

    Maximum recoil angle of the kicking leg after the kick, reflecting braking control and preparation for the next beat. Higher values indicate better recovery control.

    Baseline and immediately after 4-week intervention

  • Trunk anterior-posterior sway amplitude

    Anterior-posterior trunk sway amplitude during continuous cowboy-dance kicking. Lower values indicate better trunk stability.

    Baseline and immediately after 4-week intervention

  • 30-second cowboy-kick success rate

    Percentage of qualified kicks completed during a 30-second cowboy-dance kicking task consisting of 32 kicks.

    Baseline and immediately after 4-week intervention

Secondary Outcomes (10)

  • 30-second cowboy-kick qualified count

    Baseline and immediately after 4-week intervention

  • Y-Balance Test composite score

    Baseline and immediately after 4-week intervention

  • Bird-dog core stability hold time

    Baseline and immediately after 4-week intervention

  • Lunge squat total qualified repetitions

    Baseline and immediately after 4-week intervention

  • Step-up total qualified repetitions

    Baseline and immediately after 4-week intervention

  • +5 more secondary outcomes

Study Arms (4)

CTR: Placebo Control

PLACEBO COMPARATOR

Participants received placebo capsules matched to the active supplements and completed the standardized four-week cowboy-dance-specific training program.

Dietary Supplement: PlaceboBehavioral: Standardized cowboy-dance-specific training program

CAF: Caffeine

EXPERIMENTAL

Participants received caffeine at 3 mg·kg-¹ 30 minutes before testing and completed the standardized four-week cowboy-dance-specific training program

Dietary Supplement: PlaceboDietary Supplement: CaffeineBehavioral: Standardized cowboy-dance-specific training program

RHO: Rhodiola Rosea

EXPERIMENTAL

Participants received Rhodiola rosea supplementation at 2.4 g·day-¹ for four weeks and completed the standardized four-week cowboy-dance-specific training program.

Dietary Supplement: PlaceboDietary Supplement: Rhodiola Rosea CapsulesBehavioral: Standardized cowboy-dance-specific training program

RHO+CAF: Combined Supplementation

EXPERIMENTAL

Participants received Rhodiola rosea at 2.4 g·day-¹ for four weeks plus caffeine at 3 mg·kg-¹ 30 minutes before testing, while completing the standardized four-week cowboy-dance-specific training program.

Dietary Supplement: CaffeineDietary Supplement: Rhodiola Rosea CapsulesBehavioral: Standardized cowboy-dance-specific training program

Interventions

PlaceboDIETARY_SUPPLEMENT

Placebo capsules were matched to the active supplements in appearance, color, size, packaging, timing, and capsule number.

CAF: CaffeineCTR: Placebo ControlRHO: Rhodiola Rosea
CaffeineDIETARY_SUPPLEMENT

Caffeine was administered acutely at 3 mg·kg-¹ 30 minutes before testing.

CAF: CaffeineRHO+CAF: Combined Supplementation
Rhodiola Rosea CapsulesDIETARY_SUPPLEMENT

Rhodiola rosea extract was administered at 2.4 g·day-¹ for four weeks, divided into two daily doses before breakfast and lunch.

RHO+CAF: Combined SupplementationRHO: Rhodiola Rosea

All participants completed the same four-week standardized cowboy-dance-specific training program focusing on rhythm, repeated kicking, kick recoil control, trunk stability, functional strength, agility, and repeated movement quality.

CAF: CaffeineCTR: Placebo ControlRHO+CAF: Combined SupplementationRHO: Rhodiola Rosea

Eligibility Criteria

Age18 Years - 23 Years
Sexmale(Gender-based eligibility)
Gender Eligibility DetailsThis study enrolled male collegiate dancesport athletes to reduce sex-related variability in performance and supplementation responses.
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Completion of PAR-Q screening indicating suitability for high-intensity exercise testing.
  • Written informed consent provided before participation.

You may not qualify if:

  • Lower-limb, lumbar, or back injury that may interfere with testing. Use of medications or supplements that may interact with caffeine or Rhodiola rosea.
  • Contraindication to caffeine or Rhodiola rosea supplementation. Regular intake of coffee, strong tea, energy drinks, other ergogenic supplements, alcohol, or caffeine-containing products within 3 months before enrollment.
  • Smoking. Inability to maintain stable training, diet, sleep, and lifestyle habits during the study.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Beijing Sport University

Beijing, Beijing Municipality, 100084, China

Location

Related Publications (1)

  • Guest NS, VanDusseldorp TA, Nelson MT, Grgic J, Schoenfeld BJ, Jenkins NDM, Arent SM, Antonio J, Stout JR, Trexler ET, Smith-Ryan AE, Goldstein ER, Kalman DS, Campbell BI. International society of sports nutrition position stand: caffeine and exercise performance. J Int Soc Sports Nutr. 2021 Jan 2;18(1):1. doi: 10.1186/s12970-020-00383-4.

Related Links

MeSH Terms

Interventions

Caffeine

Intervention Hierarchy (Ancestors)

XanthinesAlkaloidsHeterocyclic CompoundsPurinonesPurinesHeterocyclic Compounds, 2-RingHeterocyclic Compounds, Fused-Ring

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
Participants, training supervisors, investigators, and outcome assessors were blinded to group allocation. Active supplements and placebo capsules were matched in appearance, color, size, packaging, timing, and capsule number. Randomization codes were kept by an independent researcher who was not involved in training supervision, outcome assessment, or statistical analysis.
Purpose
OTHER
Intervention Model
PARALLEL
Model Details: Participants were randomly assigned to one of four parallel groups: placebo control, caffeine, Rhodiola rosea, or combined Rhodiola rosea plus caffeine. All groups completed the same four-week standardized cowboy-dance-specific training program; supplementation differed by group.
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

June 30, 2026

First Posted

July 8, 2026

Study Start

April 15, 2026

Primary Completion

June 10, 2026

Study Completion

June 18, 2026

Last Updated

July 8, 2026

Record last verified: 2026-06

Data Sharing

IPD Sharing
Will not share

Individual participant data will not be publicly shared because of participant privacy and ethics restrictions. De-identified summary data may be made available upon reasonable request to the corresponding author.

Locations