Fatigue and soft tissue vibration during prolonged running

Khassetarash, Arash; Hassannejad, Reza; Ettefagh, Mir Mohammad; Sari-Sarraf, Vahid

doi:10.1016/j.humov.2015.08.024

Cited by 18 publications

(27 citation statements)

References 30 publications

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“…This fact reflects the increasing activity of the calf muscle. This finding is in agreement with the results obtained by Khassetarash et al, 36 who observed that when runners get fatigued during running, an increase in the damping factor is observed. Note that the fatigue is accompanied by decreasing the muscle capability, that is, leaving from the bound limit I toward III.…”

Section: Optimization Trends In the Domain Of Shoes' Hardness Parameterssupporting

confidence: 93%

Modeling the central nervous system functionality in controlling the calf muscle activity during running with sport shoes

Jalali

Noorani

Hassannejad

et al. 2019

Proc Inst Mech Eng H

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Biological findings show that the activity of the calf muscle group is controlled by the central nervous system during running. The central nervous system tries to retain the peak values of the ground reaction force at constant levels as well as to minimize the vibration amplitude of soft tissues of the lower leg. Furthermore, these objectives are functions of stiffness and damping (compliance properties) of the calf muscle-tendon unit, especially gastrocnemius-Achilles. In this article, a new model for the calf muscle-tendon unit activity is presented in which the coefficients of stiffness and damping are exponential functions of the force produced at the Achilles tendon in the duration of stance phase, that is, they are time variant instead of having constant values. Then, the central nervous system functionality to control the activity of the muscle-tendon unit is formulated through definition of an optimization problem. This problem is solved by additionally considering the hardness of sport shoes. The muscle activity is indeed controlled via optimally adjusting two tuning parameters of the muscle-tendon unit model in terms of the hardness of shoes. This idea is examined separately for two running speeds. The results show the following: (1) The hardness of shoes affects the muscle activity. We find safe areas of the hardness parameters to design sport shoes. (2) When hard shoes are worn, the running speed has negligible effects on the tuning parameters, while with soft shoes the tuning parameters significantly change the muscle activity and the ground reaction force depended on running speed. (3) The ability of muscle in changing its compliance properties (specified by bound limits over the muscle-tendon unit tuning parameters) has the most influence in the safe area. (4) Rising running speed leads to a decrease in the safe area of shoes' parameters.

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Section: Optimization Trends In the Domain Of Shoes' Hardness Parameterssupporting

confidence: 93%

Modeling the central nervous system functionality in controlling the calf muscle activity during running with sport shoes

Jalali

Noorani

Hassannejad

et al. 2019

Proc Inst Mech Eng H

Self Cite

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show abstract

“…To date, laboratory studies quantifying soft-tissue vibrations were limited to level treadmill running during which no evaluation of muscle fatigue was carried out ( Friesenbichler et al, 2011 ; Khassetarash et al, 2015 ). During level running, it has been suggested that muscles actively participate to the shock and vibration attenuation, according to the paradigm of “muscle tuning” proposed by ( Nigg and Wakeling, 2001 ).…”

Section: Discussionmentioning

confidence: 99%

“…Such restoration of these neuromuscular variables was not observed at 24 h post-CGs for PF, excepted for T w values. From a mechanistic perspective, future research is warranted to evaluate, within the recovery phase, the vibration damping properties which may vary with fatigue ( Friesenbichler et al, 2011 ; Khassetarash et al, 2015 ) and its relationship with EIMD.…”

Section: Discussionmentioning

confidence: 99%

“…As a matter of fact, the increase in vertical downward velocity associated with higher ground reaction forces experienced during DHR might accentuate soft-tissue vibrations ( Dewolf et al, 2016 ) and in turn, muscle activity. For instance, triceps surae soft tissue vibrations increased during prolonged and intense running sessions ( Friesenbichler et al, 2011 ; Khassetarash et al, 2015 ). Since these findings were obtained during level treadmill running (∼40 min) at a relatively low velocity (from 3 to 4 m.s -1 ), one could assume that prolonged exposures of KE and PF to higher loading rate induced by a strenuous DHR may cause greater soft-tissue vibrations and in turn, increased electromyographic activity, which might contribute to greater EIMD and muscle fatigue.…”

Section: Introductionmentioning

confidence: 99%

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Acute and Delayed Neuromuscular Alterations Induced by Downhill Running in Trained Trail Runners: Beneficial Effects of High-Pressure Compression Garments

et al. 2018

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Introduction: The aim of this study was to examine, from a crossover experimental design, whether wearing high-pressure compression garments (CGs) during downhill treadmill running affects soft-tissue vibrations, acute and delayed responses in running economy (RE), neuromuscular function, countermovement jump, and perceived muscle soreness.Methods: Thirteen male trail runners habituated to regular eccentric training performed two separate 40-min downhill running (DHR, –8.5°) sessions while wearing either CGs (15–20 mmHg for quadriceps and calves) or control garments (CON) at a velocity associated with ∼55% of VO2max, with a set of measurements before (Pre-), after (Post-DHR), and 1 day after (Post-1D). No CGs was used within the recovery phase. Perceived muscle soreness, countermovement jump, and neuromuscular function (central and peripheral components) of knee extensors (KE) and plantar flexors (PF) were assessed. Cardiorespiratory responses (e.g., heart rate, ventilation) and RE, as well as soft-tissue vibrations (root mean square of the resultant acceleration, RMS Ar) for vastus lateralis and gastrocnemius medialis were evaluated during DHR and in Post-1D.Results: During DHR, mean values in RMS Ar significantly increased over time for the vastus lateralis only for the CON condition (+11.6%). RE and cardiorespiratory responses significantly increased (i.e., alteration) over time in both conditions. Post, small to very large central and peripheral alterations were found for KE and PF in both conditions. However, the deficit in voluntary activation (VA) was significantly lower for KE following CGs (–2.4%), compared to CON (–7.9%) conditions. No significant differences in perceived muscle soreness and countermovement jump were observed between conditions whatever the time period. Additionally, in Post-1D, the CGs condition showed reductions in neuromuscular peripheral alterations only for KE (from –4.4 to –7.7%) and perceived muscle soreness scores (–8.3%). No significant differences in cardiorespiratory and RE responses as well as countermovement jump were identified between conditions in Post-1D.Discussion: Wearing high-pressure CGs (notably on KE) during DHR was associated with beneficial effects on soft-tissue vibrations, acute and delayed neuromuscular function, and perceived muscle soreness. The use of CGs during DHR might contribute to the enhanced muscle recovery by exerting an exercise-induced “mechanical protective effect.”

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“…Central fatigue, also alters muscle strength and activity [11][12][13], promoting changes in movement patterns and spatiotemporal parameters [11,14], increases in ground reaction forces [15] and shock absorption [16], as well as decreases in stiffness characteristics [17], increases in tissue vibration [18] and plantar pressures [19], and decreased postural stability dynamics [20], trunk stability [21,22] or in the performance of cognitive tasks [23].…”

Section: Introductionmentioning

confidence: 99%

Higher Hamstrings Strength and Stability Are Related to Lower Kinematics Alteration during Running after Central and Peripheral Fatigue

Encarnación-Martínez

García-Gallart

Sanchis-Sanchis

et al. 2022

Sensors

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Fatigue can be classified as peripheral or central depending on the extent of its effects. Muscle strength reduction, associated with the appearance of fatigue during running, produces kinetics and kinematics modifications which could lead to an increased risk of injury. This study aimed to analyze the effect of peripheral and central fatigue protocols in running kinematics and to investigate the relationship between isokinetic strength and dynamic stability in fatigue related changes. Eighteen male recreational runners participated in the study. The dynamic postural stability index (DPSI) and quadriceps and hamstring isokinetic strength were assessed before the fatigue test. Then, angular kinematics during treadmill running were evaluated in pre- and post-fatigue states (central and peripheral). The results showed that runners with higher hamstring isokinetic strength and better DPSI had lower modifications after central fatigue of stance time, knee flexion, vertical and leg stiffness, and ankle dorsiflexion during the absorption and propulsion phases (r > 0.400, p < 0.05). Moreover, small changes in ankle dorsiflexion at initial contact after peripheral fatigue are related to a better DPSI and higher hamstring isokinetic strength (r > 0.400, p < 0.05). In summary, high values of hamstring isokinetic concentric strength and dynamic stability are related to lower increases of range of movements during running after central and peripheral fatigue. So, fatigue may affect to a lesser extent the running technique of those runners with higher hamstring strength and stability values.

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Fatigue and soft tissue vibration during prolonged running

Cited by 18 publications

References 30 publications

Modeling the central nervous system functionality in controlling the calf muscle activity during running with sport shoes

Modeling the central nervous system functionality in controlling the calf muscle activity during running with sport shoes

Acute and Delayed Neuromuscular Alterations Induced by Downhill Running in Trained Trail Runners: Beneficial Effects of High-Pressure Compression Garments

Higher Hamstrings Strength and Stability Are Related to Lower Kinematics Alteration during Running after Central and Peripheral Fatigue

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