A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Physiological, Perceptual, and Performance Responses to the 2-Week Block of High- versus Low-Intensity Endurance Training (2022)
Nuuttila, O.-P., Nummela, A., Kyröläinen, H., Laukkanen, J., & Häkkinen, K. (2022). Physiological, Perceptual, and Performance Responses to the 2-Week Block of High- versus Low-Intensity Endurance Training. Medicine and Science in Sports and Exercise, 54(5), 851-860. https://doi.org/10.1249/mss.0000000000002861
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Nuuttila, Olli-Pekka; Nummela, Ari; Kyröläinen, Heikki; Laukkanen, Jari; Häkkinen, Keijo
Lehti tai sarja: Medicine and Science in Sports and Exercise
ISSN: 0195-9131
eISSN: 1530-0315
Julkaisuvuosi: 2022
Ilmestymispäivä: 21.01.2022
Volyymi: 54
Lehden numero: 5
Artikkelin sivunumerot: 851-860
Kustantaja: Lippincott Williams & Wilkins
Julkaisumaa: Yhdysvallat (USA)
Julkaisun kieli: englanti
DOI: https://doi.org/10.1249/mss.0000000000002861
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/79552
Tiivistelmä
This study examined the physiological, perceptual, and performance responses to a 2-week block of increased training load and compared whether responses differ between high-intensity interval (HIIT) and low-intensity (LIT) endurance training.
Methods
Thirty recreationally trained males and females performed a two-week block of 10 HIIT-sessions (INT, n = 15) or 70 % increased volume of LIT (VOL, n = 15). Running time in the 3000 m and basal serum and urine hormone concentrations were measured before (T1) and after the block (T2), and after a recovery week (T3). In addition, weekly averages of nocturnal heart rate variability (HRV) and perceived recovery were compared to the baseline.
Results
Both groups improved their running time in the 3000 m from T1 to T2 (INT -1.8 ± 1.6 %, p = 0.003; VOL -1.4 ± 1.7 %, p = 0.017) and T1 to T3 (INT -2.5 ± 1.6 %, p < 0.001; VOL -2.2 ± 1.9 %, p = 0.001). Resting norepinephrine concentration increased in INT from T1 to T2 (p = 0.01) and remained elevated at T3 (p = 0.018). The change in HRV from the baseline was different between the groups during the first week (INT -1.0 ± 2.0 % vs. VOL 1.8 ± 3.2 %, p = 0.008). Muscle soreness increased only in INT (p < 0.001) and the change was different compared to VOL across the block and recovery weeks (p < 0.05).
Conclusions
HIIT and LIT blocks increased endurance performance in a short period of time. Although both protocols seemed to be tolerable for recreational athletes, a HIIT-block may induce some negative responses such as increased muscle soreness and decreased parasympathetic activity.
YSO-asiasanat: juoksu; kestävyysharjoittelu; intervalliharjoittelu; sykeharjoittelu; harjoitusvaste; noradrenaliini
Vapaat asiasanat: block periodization; running; endurance performance; heart rate variability; norepinephrine; muscle soreness
Liittyvät organisaatiot
Liittyvät tutkimusaineistot
OKM-raportointi: Kyllä
Raportointivuosi: 2022
JUFO-taso: 3
