Annals of Applied Sport Science
تازههای علوم کاربردی ورزش
Ann Appl Sport Sci
Medical Sciences
http://aassjournal.com
1
admin
2476–4981
2322-4479
10.61186/aassjournal
en
jalali
1397
1
1
gregorian
2018
4
1
6
1
online
1
fulltext
en
The Relationship between the Isocapnic Buffering Phase and Ventilatory Threshold in Endurance Athletes and Team Sport Athletes during an Incremental Exercise Test
فيزيولوژی ورزشی و شاخههای وابسته بدان
Sport Physiology and its related branches
مقاله اصیل
Original Article
<div style="text-align: justify;"><span style="font-size:12px;"><span style="font-family:times new roman;"><strong>Background. </strong>There is sparse literature examining the ICB phase of aerobic- and anaerobic-trained athletes. Measurements of ICB phase values of athletes can help to evaluate the sport’s physiological demands and understand the physiological adaptations in response to physical training. <strong>Objectives. </strong>The purpose of this study was to examine the relationship between the </span></span><span style="font-size:12px;"><span style="font-family:times new roman;">isocapnic</span></span><span style="font-size:12px;"><span style="font-family:times new roman;"> buffering (ICB) phase and the maximal oxygen uptake (VO<sub>2max</sub>) as well as the ventilatory threshold (VT) in trained athletes. <strong>Methods.</strong> Twenty-eight male endurance athletes and 40 male team </span></span><span style="font-size:12px;"><span style="font-family:times new roman;">sports</span></span><span style="font-size:12px;"><span style="font-family:times new roman;"> athletes underwent an incremental treadmill test to determine their VT, respiratory compensation point (RCP), and VO2max. The ICB phase was calculated as the difference in Oxygen uptake (VO<sub>2</sub>) between the RCP and VT and expressed in either absolute or relative values. <strong>Results.</strong> The VO<sub>2max</sub>, maximal running speed, time to exhaustion, VO<sub>2</sub> at the VT and RCP, running speed at the VT, and VT expressed as % VO<sub>2max </sub></span></span><span style="font-size:12px;"><span style="font-family:times new roman;">was</span></span><span style="font-size:12px;"><span style="font-family:times new roman;"> higher in the endurance athletes than in the team sport athletes (p < 0.01), whereas the RCP expressed as % VO<sub>2max</sub> and running speed at the RCP showed similar values in both groups (p > 0.05). Both the absolute and relative ICB phase values were found to be significantly higher in team </span></span><span style="font-size:12px;"><span style="font-family:times new roman;">sports</span></span><span style="font-size:12px;"><span style="font-family:times new roman;"> athletes than in endurance athletes (p < 0.001). The relative ICB phase was significantly negatively correlated with the VO<sub>2max</sub> (– r = 0.517, p < 0.001), the VO<sub>2</sub> at the VT (– r = 0.755, p < 0.001), and the VO<sub>2</sub> at the RCP (r = – 0.517, p = 0.001). <strong>Conclusion. </strong>The current findings suggest that, for trained athletes, the magnitude of the ICB phase is more closely related to the VT rather than the VO<sub>2max</sub> and RCP. Presumably, the </span></span><span style="font-size:12px;"><span style="font-family:times new roman;">high-intensity</span></span><span style="font-size:12px;"><span style="font-family:times new roman;"> intermittent-type exercises performed by team </span></span><span style="font-size:12px;"><span style="font-family:times new roman;">sports</span></span><span style="font-size:12px;"><span style="font-family:times new roman;"> athletes may have improved their buffering capacity, leading to a shift in the RCP without a change in the VT, and consequently enhancing the ICB phase.</span></span></div>
Buffering Capacity, Maximal Oxygen Uptake, Respiratory Compensation Point, Training
1
9
http://aassjournal.com/browse.php?a_code=A-11-762-1&slc_lang=en&sid=1
Selcen
Korkmaz Eryılmaz
selcen_korkmaz@yahoo.com
10031947532846007039
10031947532846007039
Yes
School of Physical Education and Sports, Cukurova University, Adana, Turkey
Metin
Polat
polat.metin@gmail.com
10031947532846007040
10031947532846007040
No
School of Physical Education and Sports, Erciyes University, Kayseri, Turkey
Mehmet
Soyal
mehmetsoyal3838@hotmail.com
10031947532846007041
10031947532846007041
No
School of Physical Education and Sports, Istanbul Esenyurt University, Istanbul, Turkey
Sami
Aydoğan
aydogans@erciyes.edu.tr
10031947532846007042
10031947532846007042
No
Division of Sports Physiology, Department of Physiology, Faculty of Medicine, Erciyes University, Kayseri, Turkey