Delayed acclimatization of the ventilatory threshold in healthy trekkers.
OBJECTIVE: To test the hypothesis that acclimatization to high altitude results in an improvement of the ventilatory threshold (VT). METHODS: Eight lowlanders underwent cardiopulmonary exercise testing with a cycle ergometer to determine VT and peak oxygen uptake (Vo2peak) in Coventry, United Kingd...
| Main Authors: | , , , , , |
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| 格式: | Journal article |
| 语言: | English |
| 出版: |
2008
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| _version_ | 1826273595275345920 |
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| author | Myers, S Biccard, B Chan, C Imray, C Wright, A Pattinson, K |
| author_facet | Myers, S Biccard, B Chan, C Imray, C Wright, A Pattinson, K |
| author_sort | Myers, S |
| collection | OXFORD |
| description | OBJECTIVE: To test the hypothesis that acclimatization to high altitude results in an improvement of the ventilatory threshold (VT). METHODS: Eight lowlanders underwent cardiopulmonary exercise testing with a cycle ergometer to determine VT and peak oxygen uptake (Vo2peak) in Coventry, United Kingdom (altitude: 80 m), on arrival in leh, india (altitude: 3500 m), and after 12 days of acclimatization that included a 5-day high altitude trek up to 4770 m. RESULTS: Vo2peak fell on arrival at 3500 m and remained depressed at 12 days. VT was depressed on arrival at high altitude and was further depressed at 12 days. VT as a proportion of the Vo2peak was decreased on arrival at high altitude, and after acclimatization, this relationship was further decreased. CONCLUSIONS: Individuals who are sedentary or not participating in regular physical training appear to require a longer period of acclimatization than trained athletes. With the increasing numbers participating in high-altitude trekking and charity climbs of peaks, such as Mt. Kilimanjaro, this information has clinically significant practical implications for those leading or acting as medical advisors. |
| first_indexed | 2024-03-06T22:30:35Z |
| format | Journal article |
| id | oxford-uuid:58236d50-a57d-4c6f-8c29-42a4a65fcdb0 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T22:30:35Z |
| publishDate | 2008 |
| record_format | dspace |
| spelling | oxford-uuid:58236d50-a57d-4c6f-8c29-42a4a65fcdb02022-03-26T17:01:16ZDelayed acclimatization of the ventilatory threshold in healthy trekkers.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:58236d50-a57d-4c6f-8c29-42a4a65fcdb0EnglishSymplectic Elements at Oxford2008Myers, SBiccard, BChan, CImray, CWright, APattinson, K OBJECTIVE: To test the hypothesis that acclimatization to high altitude results in an improvement of the ventilatory threshold (VT). METHODS: Eight lowlanders underwent cardiopulmonary exercise testing with a cycle ergometer to determine VT and peak oxygen uptake (Vo2peak) in Coventry, United Kingdom (altitude: 80 m), on arrival in leh, india (altitude: 3500 m), and after 12 days of acclimatization that included a 5-day high altitude trek up to 4770 m. RESULTS: Vo2peak fell on arrival at 3500 m and remained depressed at 12 days. VT was depressed on arrival at high altitude and was further depressed at 12 days. VT as a proportion of the Vo2peak was decreased on arrival at high altitude, and after acclimatization, this relationship was further decreased. CONCLUSIONS: Individuals who are sedentary or not participating in regular physical training appear to require a longer period of acclimatization than trained athletes. With the increasing numbers participating in high-altitude trekking and charity climbs of peaks, such as Mt. Kilimanjaro, this information has clinically significant practical implications for those leading or acting as medical advisors. |
| spellingShingle | Myers, S Biccard, B Chan, C Imray, C Wright, A Pattinson, K Delayed acclimatization of the ventilatory threshold in healthy trekkers. |
| title | Delayed acclimatization of the ventilatory threshold in healthy trekkers. |
| title_full | Delayed acclimatization of the ventilatory threshold in healthy trekkers. |
| title_fullStr | Delayed acclimatization of the ventilatory threshold in healthy trekkers. |
| title_full_unstemmed | Delayed acclimatization of the ventilatory threshold in healthy trekkers. |
| title_short | Delayed acclimatization of the ventilatory threshold in healthy trekkers. |
| title_sort | delayed acclimatization of the ventilatory threshold in healthy trekkers |
| work_keys_str_mv | AT myerss delayedacclimatizationoftheventilatorythresholdinhealthytrekkers AT biccardb delayedacclimatizationoftheventilatorythresholdinhealthytrekkers AT chanc delayedacclimatizationoftheventilatorythresholdinhealthytrekkers AT imrayc delayedacclimatizationoftheventilatorythresholdinhealthytrekkers AT wrighta delayedacclimatizationoftheventilatorythresholdinhealthytrekkers AT pattinsonk delayedacclimatizationoftheventilatorythresholdinhealthytrekkers |