EFFECTS OF REPEATED SPRINT TRAINING ON ISOCAPNIC BUFFERING PHASE IN VOLLEYBALL PLAYERS


Creative Commons License

Erylmaz S., KAYNAK K., Polat M., Aydogan S.

REVISTA BRASILEIRA DE MEDICINA DO ESPORTE, cilt.24, sa.4, ss.286-290, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 24 Sayı: 4
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1590/1517-869220182404185842
  • Dergi Adı: REVISTA BRASILEIRA DE MEDICINA DO ESPORTE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.286-290
  • Anahtar Kelimeler: Oxygen consumption, Anaerobic threshold, Hyperventilation, Acidosis, RESPIRATORY COMPENSATION POINT, INCREMENTAL EXERCISE, ANAEROBIC THRESHOLD, DISTANCE RUNNERS, INTERVAL, CAPACITY, PERFORMANCE, LACTATE, HYPERVENTILATION, INTENSITY
  • Sivas Cumhuriyet Üniversitesi Adresli: Hayır

Özet

Introduction:The region between the ventilatory threshold (VT) and respiratory compensation point (RCP) is defined as the isocapnic buffering (ICB) phase and represents a phase of compensation for exercise-induced metabolic acidosis. There is sparse literature examining the effects of physical training on ICB phase in athletes. Objectives:The purpose of this study was to examine the effects of a repeated sprint training program on the ICB phase of college volleyball players. Methods: Eighteen male volleyball players were randomly assigned to either an experimental group (n=9) or a control group (n=9) and followed a traditional volleyball training program three times per week for six weeks. The experimental group additionally performed a repeated sprint training protocol immediately before each volleyball training session. Before and after the 6-week training period, all participants performed an incremental treadmill test to determine VT, RCP, and maximal oxygen uptake (VO2max). The ICB phases were calculated as VO2(ml/kg/min) and sprint speed (km/h). Results:The experimental group showed significant improvements in ICB phase, RCP, VO2max and maximal sprint speed after training (p<0.01). There were no significant changes in VT after training in the experimental group (p>0.05). None of these variables changed significantly in the control group (p>0.05). Conclusions: These findings indicate that repeated sprint training can enhance the ICB phase of volleyball players, which may be attributable to an improvement in buffering capacity leading to a shift in RCP towards higher intensities without any change in VT. The increase in the ICB phase may an important factor in terms of improvement in the high-intensity exercise tolerance of athletes.