Effect of increased and maintained frequency of speed endurance training on performance and muscle adaptations in runners

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Effect of increased and maintained frequency of speed endurance training on performance and muscle adaptations in runners. / Skovgaard, Casper; Almquist, Nicki Winfield; Bangsbo, Jens.

I: Journal of Applied Physiology, Bind 122, Nr. 1, 2017, s. 48-59.

Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

Harvard

Skovgaard, C, Almquist, NW & Bangsbo, J 2017, 'Effect of increased and maintained frequency of speed endurance training on performance and muscle adaptations in runners', Journal of Applied Physiology, bind 122, nr. 1, s. 48-59. https://doi.org/10.1152/japplphysiol.00537.2016

APA

Skovgaard, C., Almquist, N. W., & Bangsbo, J. (2017). Effect of increased and maintained frequency of speed endurance training on performance and muscle adaptations in runners. Journal of Applied Physiology, 122(1), 48-59. https://doi.org/10.1152/japplphysiol.00537.2016

Vancouver

Skovgaard C, Almquist NW, Bangsbo J. Effect of increased and maintained frequency of speed endurance training on performance and muscle adaptations in runners. Journal of Applied Physiology. 2017;122(1):48-59. https://doi.org/10.1152/japplphysiol.00537.2016

Author

Skovgaard, Casper ; Almquist, Nicki Winfield ; Bangsbo, Jens. / Effect of increased and maintained frequency of speed endurance training on performance and muscle adaptations in runners. I: Journal of Applied Physiology. 2017 ; Bind 122, Nr. 1. s. 48-59.

Bibtex

@article{890668e6f3074b62ba55c7d77ce40043,
title = "Effect of increased and maintained frequency of speed endurance training on performance and muscle adaptations in runners",
abstract = "The aim of the study was, in runners accustomed to speed endurance training (SET), to examine the effect of increased and maintained frequency of SET on performance and muscular adaptations. After familiarization (FAM) to SET, eighteen male (n=14) and female (n=4) runners (VO2-max: 57.3±3.4 ml·min(-1); mean±SD) completed twenty sessions of maintained low-frequency (LF; every fourth day; n=7) or high-frequency (HF; every second day; n=11) SET (intervention period; INT). Before FAM as well as before and after INT, subjects completed a series of running tests and a biopsy from m. vastus lateralis was collected. 10-km performance improved (P<0.05) ~3.5% during FAM with no further change during INT. Time to exhaustion at 90% vVO2-max was 15% and 22% longer (P<0.05) during FAM and a further 12% and 16% longer (P<0.05) during INT in HF and LF, respectively. During FAM muscle expression of NHE1 and maximal activity of CS and PFK increased (P<0.05), running economy (RE) improved (P<0.05), and VO2-max was unchanged. During INT both HF and LF increased (P<0.05) muscle expression of NKAβ1 whereas maximal activity of CS and PFK, RE and VO2-max were unchanged. Furthermore, during INT, muscle expression of FXYD1 and SERCA1, and FXYD1 activity increased (P<0.05) in HF, while muscle expression of SERCA2 decreased (P<0.05) in LF. Thus, increased or maintained frequency of SET leads to further improvements in short-term exercise capacity, but not in 10-km running performance. The better short-term exercise capacity may be associated with elevated expression of muscle proteins related to Na(+)/K(+) transportation and Ca(2+) re-uptake.",
keywords = "Faculty of Science, Speed endurance training, Performance, Muscular adaptations, Exercise capacity, Na+, K+ ATPase, SERCA",
author = "Casper Skovgaard and Almquist, {Nicki Winfield} and Jens Bangsbo",
note = "CURIS 2017 NEXS 018",
year = "2017",
doi = "10.1152/japplphysiol.00537.2016",
language = "English",
volume = "122",
pages = "48--59",
journal = "Journal of Applied Physiology",
issn = "8750-7587",
publisher = "American Physiological Society",
number = "1",

}

RIS

TY - JOUR

T1 - Effect of increased and maintained frequency of speed endurance training on performance and muscle adaptations in runners

AU - Skovgaard, Casper

AU - Almquist, Nicki Winfield

AU - Bangsbo, Jens

N1 - CURIS 2017 NEXS 018

PY - 2017

Y1 - 2017

N2 - The aim of the study was, in runners accustomed to speed endurance training (SET), to examine the effect of increased and maintained frequency of SET on performance and muscular adaptations. After familiarization (FAM) to SET, eighteen male (n=14) and female (n=4) runners (VO2-max: 57.3±3.4 ml·min(-1); mean±SD) completed twenty sessions of maintained low-frequency (LF; every fourth day; n=7) or high-frequency (HF; every second day; n=11) SET (intervention period; INT). Before FAM as well as before and after INT, subjects completed a series of running tests and a biopsy from m. vastus lateralis was collected. 10-km performance improved (P<0.05) ~3.5% during FAM with no further change during INT. Time to exhaustion at 90% vVO2-max was 15% and 22% longer (P<0.05) during FAM and a further 12% and 16% longer (P<0.05) during INT in HF and LF, respectively. During FAM muscle expression of NHE1 and maximal activity of CS and PFK increased (P<0.05), running economy (RE) improved (P<0.05), and VO2-max was unchanged. During INT both HF and LF increased (P<0.05) muscle expression of NKAβ1 whereas maximal activity of CS and PFK, RE and VO2-max were unchanged. Furthermore, during INT, muscle expression of FXYD1 and SERCA1, and FXYD1 activity increased (P<0.05) in HF, while muscle expression of SERCA2 decreased (P<0.05) in LF. Thus, increased or maintained frequency of SET leads to further improvements in short-term exercise capacity, but not in 10-km running performance. The better short-term exercise capacity may be associated with elevated expression of muscle proteins related to Na(+)/K(+) transportation and Ca(2+) re-uptake.

AB - The aim of the study was, in runners accustomed to speed endurance training (SET), to examine the effect of increased and maintained frequency of SET on performance and muscular adaptations. After familiarization (FAM) to SET, eighteen male (n=14) and female (n=4) runners (VO2-max: 57.3±3.4 ml·min(-1); mean±SD) completed twenty sessions of maintained low-frequency (LF; every fourth day; n=7) or high-frequency (HF; every second day; n=11) SET (intervention period; INT). Before FAM as well as before and after INT, subjects completed a series of running tests and a biopsy from m. vastus lateralis was collected. 10-km performance improved (P<0.05) ~3.5% during FAM with no further change during INT. Time to exhaustion at 90% vVO2-max was 15% and 22% longer (P<0.05) during FAM and a further 12% and 16% longer (P<0.05) during INT in HF and LF, respectively. During FAM muscle expression of NHE1 and maximal activity of CS and PFK increased (P<0.05), running economy (RE) improved (P<0.05), and VO2-max was unchanged. During INT both HF and LF increased (P<0.05) muscle expression of NKAβ1 whereas maximal activity of CS and PFK, RE and VO2-max were unchanged. Furthermore, during INT, muscle expression of FXYD1 and SERCA1, and FXYD1 activity increased (P<0.05) in HF, while muscle expression of SERCA2 decreased (P<0.05) in LF. Thus, increased or maintained frequency of SET leads to further improvements in short-term exercise capacity, but not in 10-km running performance. The better short-term exercise capacity may be associated with elevated expression of muscle proteins related to Na(+)/K(+) transportation and Ca(2+) re-uptake.

KW - Faculty of Science

KW - Speed endurance training

KW - Performance

KW - Muscular adaptations

KW - Exercise capacity

KW - Na+

KW - K+ ATPase

KW - SERCA

U2 - 10.1152/japplphysiol.00537.2016

DO - 10.1152/japplphysiol.00537.2016

M3 - Journal article

C2 - 27856713

VL - 122

SP - 48

EP - 59

JO - Journal of Applied Physiology

JF - Journal of Applied Physiology

SN - 8750-7587

IS - 1

ER -

ID: 169157889