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    Wyświetlanie 1-3 z 3
    Tytuł:
    The Borg Scale at high altitude
    Autorzy:
    Küpper, Thomas
    Heussen, N.
    Morrison, Audry
    Schöffl, Volker
    Basnyat, Buddha
    Hillebrandt, David
    Milledge, Jim
    Steffgen, Jürgen
    Meier, Beate
    Powiązania:
    https://bibliotekanauki.pl/articles/2098238.pdf
    Data publikacji:
    2021-06-18
    Wydawca:
    Państwowa Wyższa Szkoła Zawodowa w Tarnowie
    Tematy:
    Borg Scale
    perceived exertion
    high altitude
    exercise physiology
    exercise testing
    Opis:
    Introduction: The Borg Scale for perceived exertion is well established in science and sport to keep an appropriate level of workload or to rate physical strain. Although it is also often used at moderate and high altitude, it was never validated for hypoxic conditions. Since pulse rate and minute breathing volume at rest are increased at altitude it may be expected that the rating of the same workload is higher at altitude compared to sea level.Material and methods: 16 mountaineers were included in a prospective randomized design trial. Standardized workload (ergometry) and rating of the perceived exertion (RPE) were performed at sea level, at 3,000 m, and at 4,560 m. For validation of the scale Maloney-Rastogi-test and Bland-Altmann-Plots were used to compare the Borg ratings at each intensity level at the three altitudes; p < 0.05 was defined as significant.Results: In Bland-Altmann-Plots more than 95% of all Borg ratings were within the interval of 1.96 x standard deviation. There was no significant deviation of the ratings at moderate or high altitude. The correlation between RPE and workload or oxygen uptake was weak.Conclusion: The Borg Scale for perceived exertion gives valid results at moderate and high altitude – at least up to about 5,000 m. Therefore it may be used at altitude without any modification. The weak correlation of RPE and workload or oxygen uptake indicates that there should be other factors indicating strain to the body. What is really measured by Borg’s Scale should be investigated by a specific study.
    Źródło:
    Health Promotion & Physical Activity; 2021, 15, 2; 1-8
    2544-9117
    Pojawia się w:
    Health Promotion & Physical Activity
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sportspecific performance diagnosis in ski mountaineering — comparison of a sportspecific cardiopulmonary exercise test on a treadmill versus outdoors and at altitude, a pilot study
    Autorzy:
    Schöffl, Isabelle
    Bliemsrieder, Bernhard
    Küpper, Thomas
    Schöffl, Volker
    Powiązania:
    https://bibliotekanauki.pl/articles/2098272.pdf
    Data publikacji:
    2021-09-28
    Wydawca:
    Państwowa Wyższa Szkoła Zawodowa w Tarnowie
    Tematy:
    spiroergometry
    performance testing
    ski mountaineering
    exercise testing
    CPEC
    Opis:
    Background: Ski mountaineering is a competitive sport that has gained popularity during the last years. As most competitions are held in altitudes between 1500 m and 3500 m, a considerable amount of training occurs at various hypobaric hypoxia degrees. It was establishing a sport-specific cardiopulmonary exercise protocol using standard ski mountaineering equipment on a treadmill. This study investigated altitude’s effects on a self-regulated incremental exercise field test at 3100 m with this protocol.Methods: Six athletes were tested (24.2 ± 4.2 years) from the German Ski Mountaineering National Team with a portable telemetric cardiopulmonary exercise test equipment. First, an incremental indoor step test with skis on a treadmill (altitude 310 m) and four days later outdoor on glacier snow (3085 m) after three days of acclimatization. All athletes were exposed to repetitive intermittent hypoxia during the weeks before the test. Standard cardiopulmonary exercise parameters were recorded while individual training zones were defined according to ventilatory thresholds.Results: In highly trained athletes, mean V̇O2peak (72/ml kg KG/min) was reduced by 25% or 9% per 1000 m altitude gain and by 18% and 23% at the first and second ventilatory thresholds, respectively. Mean maximum heart rate and the heart rate at the ventilatory thresholds were reduced at altitude compared to sea-level, as was the O2pulse.Conclusion: Due to distinctive individual reactions to hypoxia, cold, etc., an individual and sport-specific field performance analysis, representing the daily training environment, is highly useful in world-class athletes for precise training control. Our self-regulated cardiopulmonary field protocol could well prove to serve in such a way.
    Źródło:
    Health Promotion & Physical Activity; 2021, 16, 3; 16-25
    2544-9117
    Pojawia się w:
    Health Promotion & Physical Activity
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cardiopulmonary exercise tests of adolescent elite sport climbers – a comparison of the German junior national team in sport climbing and Nordic skiing
    Autorzy:
    Schöffl, Isabelle
    Wüstenfeld, Jan
    Jones, Gareth
    Dittrich, Sven
    Lutter, Chris
    Schöffl, Volker
    Powiązania:
    https://bibliotekanauki.pl/articles/2098221.pdf
    Data publikacji:
    2021-02-25
    Wydawca:
    Państwowa Wyższa Szkoła Zawodowa w Tarnowie
    Tematy:
    cardiopulmonary exercise testing
    adolescent athlete
    VO2peak
    cardiopulmonary capacity in climbing
    Opis:
    Introduction: All the research investigating the cardiopulmonary capacity in climbers is focused on predictors for climbing performance. The effects of climbing on the cardiovascular system in adolescents climbing at an elite level (national team) have not been evaluated.Material and methods: Retrospective analysis of the cardiopulmonary exercise test (CPET) performed on a cycle ergometer during the annual medical examination of the entire German Junior National climbing team on one occasion and for a selected subgroup on two occasions spaced two years apart. The data from the subgroup was compared to an age- and gender-matched control of Nordic skiers from the German Junior National Nordic skiing team.Results: 47 climbers (20 girls, 27 boys) were examined once. The VO2peak achieved by the athletes was 41.3 mL kg−1 min−1 (boys) and 39.8 mL kg−1 min−1 (girls). 8 boys and 6 girls were tested twice over a period of 27.5 months. The parameters of the exercise test measured on both occasions were significantly lower than those of the 8 male and 6 female Nordic skiers. There was no change with respect to any variables (e.g. VO2peak, peak work load, peak heart rate, peak lactate or O2 pulse) over the examined period.Conclusions: The elite climbers investigated in this study showed comparable VO2peak values to athletes from team and combat sports. The Nordic skiers to which they were compared showed significantly higher values consistant with the fact that this is an endurance sport. Even though the cardiopulmonary measurements of the Nordic skiers still improved after two years of training, no adaptations could be observed in the elite climbers.
    Źródło:
    Health Promotion & Physical Activity; 2021, 14, 1; 1-8
    2544-9117
    Pojawia się w:
    Health Promotion & Physical Activity
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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