[Changes in the frequency and rhythm of cardiac contractions under the influence of a flight load].
D000293:Adolescent; D000328:Adult; D000337:Aerospace Medicine; D006339:Heart Rate; D006801:Humans; D008875:Middle Aged; D009200:Myocardial Contraction; D011674:Pulse; D012146:Rest; D013997:Time Factors; D014586:USSR
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