The effect on critical velocity of runnings with change of direction in soccer

Abstract

Introduction: The aim of this study was to examine relationships between Yo-Yo intermittent recovery level 1 test (YYIR1T) performance and critical velocity determined by test protocols consisting of runs with a change of direction and straight runs. Material and Methods: Twelve young soccer players voluntarily participated in study (age: 17.07±0.24 years, training experience: 8.42±2.50 years, height: 178.58±5.76 cm, weight: 70.67±6.14 kg, body mass index: 22.16±1.59). To determine critical velocity, 6-, 9- and 12-minute runs were performed with maximum effort on a straight-line running track and a running track with a change of direction. The critical velocity was determined by two linear regression models. YYIR1T was performed to determine players’ aerobic endurance. The critical velocity value of the two test tracks was compared by the paired samples T-test. The correlation between test parameters was determined by Spearman’s correlation coefficient. Results: A significant difference between anaerobic distance capacity and the mean running speed of the two test tracks (p<0.05) was found. There was a significant correlation between critical velocity in the straight-line test track and the YYIR1T performance (p<0.05). Conclusions: Consequently, it might be said that runs with a change of direction might increase energy expenditure and anaerobic distance capacity was highly affected by those compared to critical velocity.

Change-of-Direction Speed in Firefighter Trainees: Fitness Relationships and Implications for Occupational Performance

“…COD speed is the foundation and the physical component of agility , which is the ability to change direction in response to a stimulus (Sheppard and Young, 2006). Linear speed, movement technique, muscular strength and power, and deceleration and acceleration capabilities comprise COD speed (Ari et al, 2021;Fernandez-Fernandez et al, 2022;Lockie et al, 2016Sheppard and Young, 2006). In occupational testing, COD speed tests are often used to measure multiple qualities (i.e., linear and COD speed in combination with lower-body power) (Cesario et al, 2018;Lockie et al, 2018).…”

Physiological Responses to Supramaximal Running Exercise with End-Expiratory Breath Holding up to the Breaking Point

“…Training with voluntary hypoventilation at low lung volume (VHL) is a method which consists of exercising while performing short bouts of end-expiratory breath holding (EEBH). Since 2007, this method has been consistently reported to acutely induce higher levels of blood and pulmonary carbon dioxide partial pressures as well as lower blood and muscle oxygenation compared with the same exercise performed with unrestricted breathing ( Ari et al, 2021 ; Kume et al, 2016 ; Toubekis et al, 2017 ; Woorons et al, 2007 , 2010, 2014, 2017). Greater stimulation of anaerobic glycolysis, as a consequence of the hypoxic effect, has also been reported under this condition ( Kume et al, 2016 ; Toubekis et al, 2017 ; Woorons et al, 2010 , 2014; Zając et al, 2020 ).…”

Change of Direction Performance and its Physical Determinants Among Young Basketball Male Players

“…Time-motion analyses in basketball have shown that players perform many intermittent forward, backward, and lateral high-speed movements during games ( Abdelkrim et al, 2007 ; Petway el al., 2020 ; Stojanović et al, 2018 ). In this context, previous studies have reported that basketball is characterized by intermittent high-intensity actions such as changes of direction (CODs), sprints and jumps which are considered main factors for specific performance ( Abdelkrim et al, 2007 ; Ari et al, 2021 ; Petway el al., 2020 ; Stojanović et al, 2018 ). Furthermore, recently it has been suggested that repeated CODs can be considered a key ability for team sports such as basketball ( Brini et al, 2020a , 2021 ).…”