A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Physiological and physical performance changes during a 20-day winter military training course and its subsequent 10-day recovery period (2023)
Ojanen, T., Pihlainen, K., Vaara, J. P., & Kyröläinen, H. (2023). Physiological and physical performance changes during a 20-day winter military training course and its subsequent 10-day recovery period. International Journal of Circumpolar Health, 82(1), Article 2207287. https://doi.org/10.1080/22423982.2023.2207287
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Ojanen, Tommi; Pihlainen, Kai; Vaara, Jani P.; Kyröläinen, Heikki
Lehti tai sarja: International Journal of Circumpolar Health
ISSN: 1239-9736
eISSN: 2242-3982
Julkaisuvuosi: 2023
Ilmestymispäivä: 29.04.2023
Volyymi: 82
Lehden numero: 1
Artikkelinumero: 2207287
Kustantaja: Taylor & Francis on behalf of the Circumpolar Research Network
Julkaisumaa: Britannia
Julkaisun kieli: englanti
DOI: https://doi.org/10.1080/22423982.2023.2207287
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/86857
Tiivistelmä
The present study investigated physiological, mental and physical performance changes during a 20-day winter military training course and the following 10-day recovery period. Fifty-eight (age 19 ± 1 years, height 182 ± 6 cm, body mass 78.5 ± 7.2 kg) male soldiers volunteered. Body composition, serum biomarker levels and performance tests were measured four times during the study. In addition, questionnaires were collected daily for subjective stress and rate of perceived exertion. The course induced significant declines in body (−3.9%, p < 0.05) and fat mass (−31.6%, p < 0.05) as well as in all assessed physical performance variables (−9.2 - −20.2%, p < 0.05), testosterone (−73.7%, p < 0.001) and IGF-1 concentrations (−43.6%, p < 0.001). At the same time, the sex hormone-binding globulin, creatine kinase, and C-reactive protein values increased significantly (46.3–1952.7%, p < 0.05). After the 10-day recovery period, the body composition and hormonal values returned to the baseline (p < 0.05), as did some physical performance variables, such as 2 min sit-ups and the evacuation test (p < 0.05). However, explosive force production in the upper and lower bodies remained unrecovered. The 20-day winter military training caused significant physiological and mental stress, as well as a drastic decline in physical performance even for highly physically fit soldiers, and the 10-day recovery period did not establish full recovery.
YSO-asiasanat: sotilaat; sotilaskoulutus; harjoittelu; suorituskyky; endokrinologia; palautuminen; fyysinen kunto; stressi; kylmyys; talvi
Vapaat asiasanat: cold weather training; military; human performance; endocrinology; recovery
Liittyvät organisaatiot
OKM-raportointi: Kyllä
VIRTA-lähetysvuosi: 2023
JUFO-taso: 1
