Investigation of effect on anaerobic threshold of runnings with turn at soccer

The purpose of this study was to explore whether turning running effects anaerobic threshold or not. 25 young male football players who play at MKE Kırıkkalespor U-18 team (age: 16.5 ± 0.5 years, sport age: 9.3 ± 1.5 years, height: 178.5 ± 6.0 cm., body mass: 66.7 ± 5.5 kg.) were participated in Conconi test and modified Conconi test which was composed of turning runnings with one week interval. Both test protocols were started with 10 km./h. and increased 0.5 km./h. at every 200 meters until the players were exhaust. Heart rates were recorded at every 100 meters during tests. Heart rates that were determined in both tests were put to running velocitiy- heart rate graphic. From running velocity-heart rate graphic, heart rate deflection point was determined with Conconi method as anaerobic threshold heart rate. Heart rate deflection point running velocity was determined as anaerobic threshold running velocity. Also heart rate meaning, maximum heart rate and covered distance values of tests were determined. Conconi test values were significantly higher than modified Conconi test values (p < 0.05) except for heart rate meaning and maximum heart rate values while a significant correlation was determined between Conconi test and modified Conconi test (p < 0.05). In heart rate meaning and maximum heart rate values, a significant difference was not determined between Conconi test and modified Conconi test. Findings of this investigation demonstrated that turning runnings generated difference over anaerobic threshold.Key Words: Anaerobic Threshold, Conconi Test, Endurance, Heart Rate, Lactate.