High Intensity Training and Energy Production During 90-Second High-Box Jump in Junior Alpine Skiers

Gross, Micah; Hemund, Kevin; Vogt, Michael (2014). High Intensity Training and Energy Production During 90-Second High-Box Jump in Junior Alpine Skiers Journal of Strength and Conditioning Research, 28(6), pp. 1581-1587. Lippincott Williams & Wilkins 10.1519/JSC.0000000000000294

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Alpine ski races can last up to 2.5 minutes and have very high metabolic demands. One limiting factor for performance is insufficient aerobic energy supply. We studied the effects of an 8-day interval training block on aerobic capacity (V[Combining Dot Above]O2max) and performance and physiology during the 90-second box jump test (BJ90), a maximal performance test employed to simulate the metabolic demands of alpine ski racing, in elite junior skiers. After 10 high-intensity interval training sessions, performed as cycling, running, or an obstacle course, V[Combining Dot Above]O2max increased in all subjects by 2.5 ± 1.9 ml·minute−1·kg−1 (4.3 ± 3.2%), as did maximal blood lactate concentration in a graded cycling test (before: 11.7 ± 1.3 mmol·L−1, after: 14.8 ± 1.8 mmol·L−1, both parameters p ≤ 0.05). Performance (total jumps) and aerobic energy contribution (63.3 ± 2.8%) during the BJ90 did not increase as hypothesized; however, subjects altered their pacing strategy, which may have counteracted such an effect. Additionally, the present data support the practicality of the performance test used for mimicking the demands of alpine skiing.

Item Type:	Journal Article (Original Article)
Division/Institute:	Swiss Federal Institute of Sports Magglingen SFISM > EHSM - Leistungssport > Sportphysiologie Kraft
Name:	Gross, Micah; Hemund, Kevin and Vogt, Michael
ISSN:	1064-8011 (Print) 1533-4287 (Online)
Publisher:	Lippincott Williams & Wilkins
Language:	English
Submitter:	Service Account
Date Deposited:	22 Feb 2021 15:13
Last Modified:	21 Sep 2021 02:18
Publisher DOI:	10.1519/JSC.0000000000000294
PubMed ID:	24276296
Uncontrolled Keywords:	Interval training V[Combining Dot Above]O2max Aerobic energy Energy contribution Jump performance Fatigue Alpine skiing
ARBOR DOI:	10.24451/arbor.11090
URI:	https://arbor.bfh.ch/id/eprint/11090