TY - JOUR
T1 - Acute effect of inspiratory resistive loading on sprint interval exercise performance in team-sport athletes
AU - Cheng, Ching Feng
AU - Hsu, Wei Chieh
AU - Kuo, Yu Hsuan
AU - Chen, Tzu Wei
AU - Kuo, Yu Chi
N1 - Funding Information:
The authors would like to thank the participants who contributed their time and effort to undertake this study, as well as Mr. Kai-Cheng Ji and Mr. Po-Hsun Chang for their assistance with data collection. This study was supported by a grant from the Ministry of Science and Technology, Taiwan (MOST 104-2410-H-003-063-MY2 ).
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/11
Y1 - 2020/11
N2 - This study examined acute effects of inspiratory resistive loading (IRL) during rest intervals on sprint interval exercise (SIE) performance. In a randomized crossover design, nine collegiate basketball players performed IRL (15 cmH2O) or passive recovery (CON) at 5-min rest intervals during and immediately after 6 sets of a 30-s SIE test. Performance, muscular oxygenation of vastus lateralis, blood lactate and pH were measured at each condition. Blood lactate at 5-min (−20.5 %) and 20-min (−21.3 %) after SIE were significantly lower in IRL than in CON. The pH at 5-min after SIE was significantly higher in IRL than in CON (+0.8 %, p < 0.05). However, the total work in IRL was significantly lower than in CON (−2.7 %, p < 0.05). Average changes in total hemoglobin at rest intervals in IRL were significantly lower than in CON (−34.5 %, p < 0.05). The IRL could attenuate exercise-induced metabolic acidosis; however, the decreased blood flow at rest intervals might increase the physical challenge in SIE.
AB - This study examined acute effects of inspiratory resistive loading (IRL) during rest intervals on sprint interval exercise (SIE) performance. In a randomized crossover design, nine collegiate basketball players performed IRL (15 cmH2O) or passive recovery (CON) at 5-min rest intervals during and immediately after 6 sets of a 30-s SIE test. Performance, muscular oxygenation of vastus lateralis, blood lactate and pH were measured at each condition. Blood lactate at 5-min (−20.5 %) and 20-min (−21.3 %) after SIE were significantly lower in IRL than in CON. The pH at 5-min after SIE was significantly higher in IRL than in CON (+0.8 %, p < 0.05). However, the total work in IRL was significantly lower than in CON (−2.7 %, p < 0.05). Average changes in total hemoglobin at rest intervals in IRL were significantly lower than in CON (−34.5 %, p < 0.05). The IRL could attenuate exercise-induced metabolic acidosis; however, the decreased blood flow at rest intervals might increase the physical challenge in SIE.
KW - Active recovery
KW - High-intensity interval training
KW - Lactate clearance
KW - Near-infrared spectroscopy
KW - Wingate test
UR - http://www.scopus.com/inward/record.url?scp=85089819169&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85089819169&partnerID=8YFLogxK
U2 - 10.1016/j.resp.2020.103531
DO - 10.1016/j.resp.2020.103531
M3 - Article
C2 - 32827709
AN - SCOPUS:85089819169
SN - 1569-9048
VL - 282
JO - Respiratory Physiology and Neurobiology
JF - Respiratory Physiology and Neurobiology
M1 - 103531
ER -