NDLI: Early phase interference between low-intensity running and power training in moderately trained females

Content Provider	Springer Nature Link
Author	Terzis, Gerasimos Spengos, Kostas Methenitis, Spyros Aagaard, Per Karandreas, Nikos Bogdanis, Gregory
Copyright Year	2016
Abstract	The aim of the study was to investigate the effects of low-intensity running performed immediately after lower-body power-training sessions on power development.Twenty young females participated in 6 weeks, 3/week, of either lower body power training (PT) or lower body power training followed by 30 min of low-intensity running (PET) eliciting 60–70 % of maximal heart rate. The following were measured before and after the training period: counter-movement jump, isometric leg press force and rate of force development (RFD), half squat 1-RM, vastus lateralis fiber type composition and cross sectional area, resting intramuscular fiber conduction velocity (MFCV), and heart rate during the modified Bruce treadmill test.Counter-movement jump height and peak power increased after PT (10.7 ± 6.2 and 12.9 ± 18.7 %, p < 0.05) but not after PET (3.4 ± 7.6 and 5.11 ± 10.94 %, p > 0.05). Maximum isometric force, RFD, and half squat 1-RM increased similarly in both groups. Muscle fiber type composition was not altered in either group. Muscle fiber cross sectional area increased only after PT (17.5 ± 17.4, 14.5 ± 10.4, 20.36 ± 11.3 %, in type I, IIA, and IIX fibers, respectively, p < 0.05). Likewise, mean MFCV increased with PT only (before: 4.53 ± 0.38 m s−1, after: 5.09 ± 0.39 m s−1, p = 0.027). Submaximal heart rate during the Bruce treadmill test remained unchanged after PT but decreased after PET.These results suggest that low-intensity running performed after lower-body power training impairs the exercise-induced adaptation in stretch–shortening cycle jumping performance (vertical jump height, peak power), during the first 6 weeks of training, which may be partially linked to inhibited muscle fiber hypertrophy and muscle fiber conduction velocity.
Starting Page	1063
Ending Page	1073
Page Count	11
File Format	PDF
ISSN	14396319
Journal	European Journal of Applied Physiology
Volume Number	116
Issue Number	5
e-ISSN	14396327
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-04-04
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Power training Neural adaptations Muscle hypertrophy Concurrent training Human Physiology Occupational Medicine/Industrial Medicine Sports Medicine
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Physiology (medical) Public Health, Environmental and Occupational Health Sports Science

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