Abstract
The aim of this study is to investigate the effect of the inspiratory muscle warm-up protocol on acceleration and maximal speed in children aged 12-14. Thirty sedentary boys (age: 12.63 ± 0.89 years) participated in the study. Participants were randomly included in 4 different trials (T1, T2, T3, T4). Acceleration (10m, 20m) and maximal speed tests (30m, 50m) were randomly tested at 10 minutes intervals in each trial. Acceleration and speed tests were performed without any warm-up in T1 trial, with general warm-up in T2 trial, placebo inspiratory muscle warm-up in T3 trial, and inspiratory muscle warm-up in T4 trial. As a result of the statistical analysis, it was seen that general warm-up (T2) and inspiratory muscle warm-up (T4) increased performance significantly compared to control (T1) and placebo (T3) trials in all acceleration and speed tests (p <0.05). In conclusion, it can be said that the inspiratory muscle warm-up protocol has positive effects on acceleration and maximal speed performances, similar to general warm-up.
 
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Highlights
In order to achieve the goal in sports, apart from performing the most accurate exercises for the branch and the athlete, the scientific methods are carried out and the athlete's efficiency power is constantly examined
The purpose of this study is to investigate effect of inspiratory muscle warm-up protocol on acceleration and maximal speed in 12-14 years old children
Information was given about the tests and devices to be applied and the respiratory muscle warm-up exercise was showed practically
Summary
In order to achieve the goal in sports, apart from performing the most accurate exercises for the branch and the athlete, the scientific methods are carried out and the athlete's efficiency power is constantly examined. The scientific studies, by looking at the finest details of the exercise, reveal the physical and psychological effects that contribute to athlete efficiency & Chatzisarantis, 2007; Spriet, 2014). Warm-up is a great issue in all sports activities. As a result of the non-targeted warm-up, we may encounter situations such as injury, defeat, not getting the desired efficiency (Bishop, 2003a).
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