| Autor: |
SMOLANDER, JUHANI, LOUHEVAARA, VEIKKO, AHONEN, ESA, POLARI, JUKKA, KLEN, TAPIO |
| Zdroj: |
Ergonomics; Apr1995, Vol. 38 Issue 4, p749-753, 5p |
| Abstrakt: |
In order to assess the energy demands of manual clearing of snow, nine men did snow clearing work for 15 min with a shovel and a snow pusher. The depth of the snowcover was 400–600 mm representing a very heavy snowfall. Heart rate (HR), oxygen consumption ([Vdot]O2), pulmonary ventilation ( [Vdot]OE), respiratory exchange ratio (R), and rating of perceived exertion (RPE) were determined during the work tasks. HR, [Vdot]OE, R, and RPE were not significantly different between the shovel and snow pusher. HR averaged (± SD) 141 ± 20bmin-1 with the shovel, and 142 ± 19 beats-min-1 with the snow pusher. [Vdot]O2was 2·1 ± 0·41 min-1 (63 ± 12% [Vdot]O2max) in shovelling and 2·6 ± 0·51 min-1 (75 ± 14% [Vdot]O2max) in snow pushing (p< 0·001). In conclusion manual clearing of snow in conditions representing heavy snowfalls was found to be strenuous physical work, not suitable for persons with cardiac risk factors, but which may serve as a mode of physical training in healthy adults. [ABSTRACT FROM PUBLISHER] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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