Fatigue and Recovery After High-Intensity Exercise Part I: Neuromuscular Fatigue

Lattier, G.; Millet, Guillaume Y.; Martin, Alain; Martin, Vincent

doi:10.1055/s-2004-820939

Cited by 54 publications

(37 citation statements)

References 29 publications

(37 reference statements)

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“…The present findings are in good agreement with the previous outcomes that have mainly shown minor changes in neural factors after high-intensity running and jumping exercise [4][5][6][7]22]. Overall, the identification of exercise-induced neural changes is challenging because the neural processes require only a few minutes to recover from maximal or prolonged submaximal contractions [35,36].…”

Section: Central Fatiguesupporting

confidence: 92%

“…Both the present and the previous studies [4,7] suggest that the M-wave remains unchanged after a shortterm maximal run. Although depressed M-waves have been observed after very short repeated sprint (12 × 40 m) [6] and maximal jumping exercise [22], it may be that the neuromuscular junction and the sarcolemma retain their functionality during continuous anaerobic long-sprint distances.…”

Section: Peripheral Fatiguesupporting

confidence: 83%

“…consistently with earlier studies [4,6], both adolescents and adults showed a decrease in MRTD that is limited by the rate of crossbridge transition from the weakly to strongly bound state [25]. The inhibition of the cross-bridge system has been associated with increased levels of metabolic by-products, such as H + , inorganic phosphate (P i ), and adenosine diphosphate (ADP) [25,26].…”

Section: Peripheral Fatiguesupporting

confidence: 78%

“…Previous studies addressing neuromuscular fatigue in adults have consistently shown significant reductions (from -35 to -8%) in the plantar flexor / knee extensor PT after short-term high-intensity running efforts [4][5][6][7]. Accordingly, both adolescents and adults presented peripheral fatigue in this study.…”

Section: Peripheral Fatiguesupporting

confidence: 60%

“…Fatigue can be caused by impairments in central and peripheral processes [3]. In the context of high-intensity running or jumping exercise, fatigue has mainly been attributed to the peripheral processes, including the excitation-contraction (E-c) coupling and cross-bridge cycling [4][5][6][7], while central factors seem to play a minor a role [6,7]. Unfortunately, studies of this type have so far focused mainly on grown-up subjects.…”

Section: Introductionmentioning

confidence: 99%

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Maturation-related differences in neuromuscular fatigue after a short-term maximal run

Äyrämö¹,

Vilmi²,

Mero³

et al. 2018

Hum Mov.

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Purpose. This study investigated maturation-related differences in neuromuscular fatigue after a short-term maximal run. Methods. Eight male children, eight adolescents, and eight adults performed a maximal ca. 50-s run (300/350/400 m, respectively). Mechanisms of neuromuscular fatigue were assessed through isometric plantar flexor tests, electrical stimulation of the posterior tibial nerve, soleus electromyography, and blood tests. Results. All the groups showed a decrease in the running speed (children: -12.2 ± 6.5%; adolescents: -9.8 ± 5.1%; adults: -12.2 ± 3.1%), but only adults revealed a decline in the maximal isometric plantar flexor torque (-16.1 ± 13.0%). On the other hand, the relative pre-to post-fatigue change in the maximal isometric plantar flexor torque differed only between adults and adolescents. The peak torque in the passive twitch test decreased in adolescents (-19.2 ± 12.2%) and adults (-23.7 ± 13.7%). Moreover, post-fatigue minimum blood pH (children: 7.18 ± 0.03; adolescents: 7.14 ± 0.07; adults: 6.97 ± 0.06) differed between the groups. No changes were observed in the neural drive or mechanisms at the spinal level. Conclusions. Despite the loss of running speed, children showed no post-exercise fatigue, whereas adolescents and adults demonstrated fatigue at peripheral sites. central fatigue could not be established for the studied groups. Key words: children, maturation, neuromuscular fatigue, high-intensity exercise Citation: Äyrämö S, Vilmi N, Mero AA, Piirainen J, Nummela A, Pullinen T, Avela J, Linnamo V. Maturation-related differences in neuromuscular fatigue after a short-term maximal run.

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Section: Central Fatiguesupporting

confidence: 92%

Section: Peripheral Fatiguesupporting

confidence: 83%

Section: Peripheral Fatiguesupporting

confidence: 78%

Section: Peripheral Fatiguesupporting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Maturation-related differences in neuromuscular fatigue after a short-term maximal run

Äyrämö¹,

Vilmi²,

Mero³

et al. 2018

Hum Mov.

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Acute changes in muscle activation and leg extension performance after different running exercises in elite long distance runners

Vuorimaa¹,

Virlander

Kurkilahti³

et al. 2005

Eur J Appl Physiol

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This study investigated acute changes in muscle activation and muscular power performance after three different running exercises in elite long-distance runners. Twenty-two nationally and internationally ranked long-distance runners performed first an incremental treadmill running test until exhaustion (MR) and then 40 min continuous (TR) and intermittent (2 min run/2 min rest) (IR) running exercises at an intensity of 80 and 100% of the velocity associated with VO(2max), respectively. Muscle activation and muscular power performance tests (counter-movement jumps, CMJ, and a set of ten maximal half squats from the static starting position with an extra load of 35% of the subjects, one repetition maximum) were performed before and immediately after the runs. The average mechanical power (P) of the half squats was calculated and the root mean square electromyogram (EMGrms) from the vastus lateralis, vastus medialis, gastrocnemius and biceps femoris muscles was recorded simultaneously during the half squat performances. The results showed an acute exercise-induced increase in P (ANOVA time effect, P = 0.000) together with a reduction in EMGrms of the knee extensor muscles (ANOVA time effect, P = 0.000). However, mechanical P expressed as a relative change within the set decreased after MR. In TR the improvement in P correlated positively with the maximal running performance of the runners (P < 0.05), while in IR it correlated negatively (P < 0.05). Jumping performance was significantly enhanced after each run (P < 0.001, for all) and the improvement correlated negatively with the maximal sprinting speed and maximal jumping height of the runners (P < 0.01, for all). It is concluded that in elite long distance runners an intensive prolonged running exercise reduces the surface EMG of the knee extensor muscles, and may lead to a different coordination strategy in leg extension exercises performed into the vertical direction. After continuous type of running the power improvement correlates positively with maximal endurance running capacity, whereas after intermittent type of running it correlates negatively.

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Recovery of hand grip strength and hand steadiness after exhausting manual stretcher carriage

et al. 2006

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Rescue activities frequently require not only substantial and sustained hand-grip forces but also a subtle coordination of hand and finger muscles, e.g. when manipulating injection syringes after manual stretcher carriage. We investigated the recovery kinetics of manual coordination and muscle strength after exhausting stretcher carriage (4.5 km/h, load at each handle bar: 25 kg). Hand steadiness (frequency and duration of wall contacts when holding a metal pin into a small bore) and parameters of hand-grip strength were determined in 15 male volunteers before and immediately after the stretcher carriage. Measurements were repeated after 0.5, 1, 4 and 24 h of recovery. Mean carrying time was 215+/-87 s (SD), mean transport distance amounted to 264+/-104 m. During the carriage test, forces at the stretcher handles oscillated in the order of +/-50 N within each gait cycle. Immediately after exhaustion, hand steadiness was significantly deteriorated (threefold increase in frequency and duration of wall contacts), maximum and mean hand-grip force over 15 s were reduced by almost 20%. While the recovery of hand steadiness was complete by minute 30 after stretcher carriage, a significant reduction in maximum and mean hand-grip force by 12% could still be observed after 24 h. The present findings demonstrate that hand steadiness recovers much faster than maximum hand-grip strength after exhaustive manual stretcher carriage (less than 30 min vs. more than 24 h). Probably, muscle damage induced in particular by the eccentric components during stretcher transport seems to affect only the generation of large forces. By contrast, the generation and coordination of the much lower forces required for hand-steadiness appears to be impaired only during the short transient of metabolic recovery.

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Fatigue and Recovery After High-Intensity Exercise Part I: Neuromuscular Fatigue

Cited by 54 publications

References 29 publications

Maturation-related differences in neuromuscular fatigue after a short-term maximal run

Maturation-related differences in neuromuscular fatigue after a short-term maximal run

Acute changes in muscle activation and leg extension performance after different running exercises in elite long distance runners

Recovery of hand grip strength and hand steadiness after exhausting manual stretcher carriage

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