The short-term development of performance and aerobic endurance following prolonged low-intensity ski trekking in Svalbard
A case study
Bibliographic Data
| ID | 9218751 |
|---|---|
| Authors | Even Jarstad (0000-0002-4943-6177, Høyskolen Kristiania, corresponding author), Asgeir Mamen (0000-0002-4316-7455, Høyskolen Kristiania) |
| Year | 2022 |
| Volume | 58 |
| Publication date | 2022-01-01 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Polar Record (JOURNAL) |
| Journal identifiers | ISSN: 0032-2474 • E-ISSN: 1475-3057 |
| Publisher | Cambridge University Press (CUP) (PUBLISHER) |
| DOI | 10.1017/s0032247422000201 |
| OpenAlex | W4285249345 |
| Language | EN |
| References cited | 20 |
The purpose of this case study was to examine the short-term development of performance and aerobic endurance following prolonged low-intensity ski trekking (LIST) in an Arctic region. Two male recreational athletes (aged 24 and 26 years) with high aerobic fitness performed LIST 7 ± 2 h·day −1 for 23 consecutive days, while hauling sledges (∼80 kg initially) with supplies from the north to the south of Svalbard (∼640 km). Time to exhaustion, maximal oxygen uptake (V̇O 2max ), lactate threshold (LT) and work economy were evaluated at pre- and post-trek. The results showed that the absolute and relative exercise intensity during LIST were ∼3.9 km·h −1 and ∼60% of maximal heart rate, respectively. Time to exhaustion during a ∼4–6 min ramp walking test, and a >45 min stepwise walking test, while pulling 12.5 kg weights (simulation of ski trekking with loaded sledge), increased by 11–17% and 3–9%, respectively, following LIST. Body mass and V̇O 2max relative to body mass (ml·kg −1 ·min −1 ) decreased by 5–8% and increased by 3–8%, respectively. Furthermore, the workload associated with LT and LT percentage of V̇O 2max increased by 39–69% and 12–13%, respectively. No notable change in work economy was observed. The mean pace during LIST (∼3.9 km·h −1 ) corresponded to the treadmill walking speed (4 km·h −1 ) with the lowest oxygen cost (mL·kg −1 ·m −1 ) in both participants. It can be concluded that short-term prolonged LIST can improve ski trek-simulated performance and fractional utilisation of V̇O 2max in recreational athletes with high aerobic fitness. Moreover, highly aerobically fit ski trekkers appear to instinctively choose the most energy-efficient pace during LIST
Aerobic capacity · Aerobic exercise · Animal science · Biology · Blood lactate · Blood pressure · Heart rate · Intensity (physics) · Lactate threshold · Physical therapy · Physics · Running economy · Treadmill · VO2 max · Internal Medicine · Mathematics · Medicine · Sports injuries and prevention · Sports Performance and Training · Winter Sports Injuries and Performance
| Highly cited | No |
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