Effects of Caffeine, Rhodiola Rosea, and Combined Supplementation on Cowboy-Dance-Specific Explosive Power, Movement Stability, and Muscular Endurance in Male Collegiate Dancesport Athletes
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 48
- 试验地点
- 1
- 主要终点
- 180-degree kick straight angle
研究概览
简要总结
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.
详细描述
This randomized, double-blind, placebo-controlled, parallel-group study is designed to examine the effects of caffeine, Rhodiola rosea, and combined supplementation on cowboy-dance-specific performance in male collegiate dancesport athletes. The study uses a four-arm design with 48 participants randomly assigned equally to placebo control, caffeine, Rhodiola rosea, or combined Rhodiola rosea plus caffeine groups.
All participants will complete a standardized four-week cowboy-dance-specific training program. The training program focuses on dance-specific rhythm, repeated kicking, kick recoil control, trunk stability, lower-limb explosive actions, functional strength, agility, and repeated movement quality. The control group will receive placebo capsules. 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. The combined supplementation group will receive Rhodiola rosea for four weeks and caffeine before testing.
Performance will be assessed at baseline and immediately after the four-week intervention. Primary 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 30-second qualified kick count, Y-Balance Test composite score, bird-dog core stability hold time, lunge squat and step-up qualified repetitions, 45-second high-knee rhythm accuracy, 505 change-of-direction time, Illinois agility run time, hexagon jump time, and session-RPE.
This study aims to clarify whether caffeine mainly supports rapid movement initiation and agility, whether Rhodiola rosea mainly supports movement stability and perceived load regulation, and whether combined supplementation provides broader benefits for cowboy-dance-specific movement quality.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Other
- 盲法
- Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
盲法说明
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.
入排标准
- 年龄范围
- 18 Years 至 23 Years（Adult）
- 性别
- Male
- 接受健康志愿者
- 是
入选标准
- •Male collegiate student aged 18 to 23 years. At least 3 years of systematic dancesport training experience. Stable dancesport training exposure, at least 3 sessions per week. Ability to complete the 4-week cowboy-dance-specific training program and pre/post performance testing.
- •Completion of PAR-Q screening indicating suitability for high-intensity exercise testing.
- •Written informed consent provided before participation.
排除标准
- •Current or previous neuromuscular disease, severe cardiovascular disease, or musculoskeletal injury affecting lower-limb or trunk performance.
- •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.
结局指标
主要结局
180-degree kick straight angle
时间窗: Baseline and immediately after 4-week intervention
Maximum knee extension angle during the standardized cowboy-dance kick task. Higher values indicate better kick extension quality.
Kick recoil angle
时间窗: Baseline and immediately after 4-week intervention
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.
Trunk anterior-posterior sway amplitude
时间窗: Baseline and immediately after 4-week intervention
Anterior-posterior trunk sway amplitude during continuous cowboy-dance kicking. Lower values indicate better trunk stability.
30-second cowboy-kick success rate
时间窗: Baseline and immediately after 4-week intervention
Percentage of qualified kicks completed during a 30-second cowboy-dance kicking task consisting of 32 kicks.
次要结局
- 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)
- 45-second high-knee rhythm accuracy(Baseline and immediately after 4-week intervention)
- 505 change-of-direction best time(Baseline and immediately after 4-week intervention)
- Illinois agility run best time(Baseline and immediately after 4-week intervention)
- Hexagon jump best time(Baseline and immediately after 4-week intervention)
- Session-RPE(Immediately after post-intervention testing)