Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/12059
ชื่อเรื่อง: Physiological stress against simulated 200-m and 500-m sprints in world-class boat paddlers
ผู้แต่ง: Senakham N.
Punthipayanon S.
Senakham T.
Sriyabhaya P.
Sriramatr S.
Kuo C.-H.
Keywords: creatine kinase
thiobarbituric acid reactive substance
lactic acid
adult
Article
athlete
blood level
boat paddler
controlled study
exercise intensity
human
human experiment
muscle injury
oxygen consumption
physical activity
physiological stress
race
rowing
simulation
sprint
oxygen consumption
randomized controlled trial
ship
sport
Humans
Lactic Acid
Oxygen Consumption
Ships
Sports
Stress, Physiological
วันที่เผยแพร่: 2020
บทคัดย่อ: To characterize physiological stress response against simulated short-distance sprints among world-class paddlers. Thirteen dragon boat gold medalists performed 200-m and 500-m simulated race trials on a kayak ergometer in a randomized, counter-balanced, crossover fashion. During the 200-m and 500-m sprints, oxygen consumption (VO2) increased from 8.7 to 31.2 ml/kg/min and from 8.0 to 32.7 ml/kg/min within 60 s, respectively. A plateau of 35 ml/kg/min below maximal VO2(VO2max) (39.7 ± 6.3 ml/kg/min) was reached at 75 s during the 500-m sprint. Respiratory exchange ratio dropped from 1.21 ± 0.16 to 1.07 ± 0.12 and 1.28 ± 0.13 to 1.06 ± 0.16 at 45 s, and resurged to 1.17 and 1.28 at the end of 200-m and 500-m sprints with lactate concentration reached 13 ± 2 and 15 ± 2 mM. Aerobic energy contribution to paddling power increases from ~10% for the first 15 s to ~80% for the last 15 s during the 500-m trial. Postexercise plasma thiobarbituric acid reactive substances increased by 376% and 543% above baseline after 200-m and 500-m trials (P < 0.001, between trials), respectively, followed by quick returns to baseline in 30 min (P < 0.001). Increased plasma creatine kinase (+48%) was observed only after the 500-m trial (P < 0.001, between trials), not 200-m trial. Our data suggest that muscle damage occurred only when maximal sprinting exceeding 2 min, highlighting an importance of volume than intensity on exercise-induced muscle damage. © 2020 Chinese Physiological Society. All rights reserved.
URI: https://ir.swu.ac.th/jspui/handle/123456789/12059
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85079360484&doi=10.4103%2fCJP.CJP_87_19&partnerID=40&md5=7e95360a63cdbe8c1913d43716e7d9c0
ISSN: 3044920
Appears in Collections:Scopus 1983-2021

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