Heart rate, alveolar gases and blood lactate during synchronized swimming
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CONTRIBUTORS:
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JOURNAL:
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YEAR:
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1993
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PUB TYPE:
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Journal Article
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SUBJECT(S):
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SYNCHRONIZED-SWIMMING; HEART-RATE; BLOOD; LACTATE; ADAPTATION; ENERGY-EXPENDITURE; BREATH-HOLDING; BRADYCARDIA
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DISCIPLINE:
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No discipline assigned
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HTTP:
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LANGUAGE:
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English
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PUB ID:
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103-366-367
(Last edited on
2002/02/27 18:45:01 US/Mountain)
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SPONSOR(S):
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ABSTRACT:
Heart rate, alveolar gas partial pressures and blood lactate (BLa) concentration were measured during synchronized swimming in six subjects. During upside-down breath-holding lasting 50 s, heart rate fell progressively from 98 plus/minus 14 to 70 plus/minus 7 beats min-1 (mean plus/minus S.D.). While breath-holding during the compulsory figures, the subjects heart rate increased to 142 plus/minus 5 beats min-1 and then fell to 72 plus/minus beats min-1. At the end of breath-holding, alveolar oxygen pressure had fallen significantly (60 mmHg), whereas alveolar carbon dioxide pressure showed only minor changes (48 mmHg). The increase in BLa concentration due to the execution of compulsory figures was approximately 1mM; in the free routines, BLa concentration increased by 3.4 plus/minus 0.5 mM. The net energy cost of completing a compulsory figures lasting 45 s was 34.6 kJ.
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STATISTICS
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