Effects of Caffeinated Gum on a Batting and Pitching Performance of Female Softball Players: a Crossover Trial
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 24
- 试验地点
- 2
- 主要终点
- pitching performance
研究概览
简要总结
The purpose of this study was to investigate the effects of caffeinated chewing gum on female softball pitching and hitting performance. 24 trained female softball players (10 pitchers and 14 fielders) were divided into a caffeine chewing gum trial (CAF) or a placebo trial (PLA) in a single-blind, randomized, crossover experimental design. Two pieces of gum containing 100 mg of caffeine (CAF) or without caffeine (PLA) were chewed for 10 minutes and then spit out, followed by a 15-minute warm-up. The physical tests included grip strength and countermovement jump. The softball-specific tests included pitching (fast ball speed) or hitting (exit speed). The two trials were separated by seven days.
详细描述
This study utilized a randomized, crossover, single-blind experimental design. At least two familiarization tests were conducted one week before the formal trial to ensure each participant was familiar with the experimental procedures. Before the first formal trial, participants were randomly assigned to either the caffeinated chewing gum trial (CAF) with 200 mg of caffeine or the placebo trial (PLA) without caffeine, seven days apart (Figure 1). The primary outcome was the pitching and hitting performance, and the secondary outcomes were hand grip strength and height of countermovement jump.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- Single (Investigator)
入排标准
- 年龄范围
- 20 Years 至 30 Years（Adult）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •adult female;
- •at least six years of professional softball training and familiarity with all softball skills;
- •caffeine intake of less than 80 mg daily.
排除标准
- •not professionally trained;
- •having a medical condition for which exercise is not recommended, such as hypertension, hyperlipidemia, or heart disease;
- •having any musculoskeletal injuries within the last six months or not being able to complete a full trial;
- •having a history of caffeine allergy.
结局指标
主要结局
pitching performance
时间窗: 15 min after intervention
Throw 10 fastballs
batting performance
时间窗: 15 min after intervention
Hit 15 balls
次要结局
未报告次要终点
研究者
Chih-Hui Chiu
Professor
National Taiwan Sport University