Cardiovascular responses to leisure alpine skiing in habitually sedentary middle-aged men
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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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MAN; MIDDLE-AGE; ALPINE-SKIING; NON-ATHLETE; ADAPTATION; HEART-RATE; BLOOD-PRESSURE; PHYSICAL-FITNESS
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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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103-366-369
(Last edited on
2002/02/27 18:45:01 US/Mountain)
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SPONSOR(S):
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ABSTRACT:
In order to evaluate the cardiovascular responses to leisure alpine skiing of habitually sedentary and not particularly active adult men, a series of continuous recordings of heart rate (HR) was performed on 10 subjects age 51.0 plus/minus 1.3 years (mean plus/minus S.E.) during a 6-day ski trip at an altitude of 1000-2485 m. From the very first day, the subjects spontaneously adopted a regimen of intense physical activity, since 17.9 percent and the HR values recorded on the ski runs were higher than 85 percent of the maximal theoretical HR (THRmax (beats min-1)=220-age (years)), which represented 19.5 percent of the actual skiing time. On day 2, 10.7 percent of the HR values were higher than 85 percent THRmax, or 17.9 percent of actual skiing time. For the entire ski trip, the HR during skiing was similar to 126 beats min-1, which corresponds to 75 percent THRmax. At rest, HR in the morning did not change significantly from days 2 to 6 (from 80 plus/minus 4 to 75 plus/minus 4 beats min-1, P less than 0.05), whereas HR in the evening correlated significantly from days 2 to 6 (from 80 plus/minus 4 to 75 plus/minus 4 beats min-1, P greater than 0.05), whereas HR in the evening correlated significantly with the duration of physical activity during the day (r=0.487), P less than 0.001). In all cases, HR at rest was significantly higher than before the trip, except in the evening of day 4, the day on which the subjects skied less because they were fatigued after skiing in the morning Systolic blood pressure (SBP) at rest was always lower than the control established before the trip, whether taken in the morning or in the evening. The evening SBP correlated significantly to the SBP of the following morning (r=0.568, P less than 0.001). Our results show that (1) leisure alpine skiing constitutes intense physical exercise over 6 consecutive days and (2) HR at rest remained high at all times and sleep had little influence on the SBP values when the activity during the day before was relatively intense and prolonged.
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