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Shoja O, Shojaei M, Hassanlouei H, Towhidkhah F, Zhang L. Quantifying Human Gait Symmetry During Blindfolded Treadmill Walking. Motor Control 2024:1-16. [PMID: 38402881 DOI: 10.1123/mc.2023-0028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 12/20/2023] [Accepted: 01/05/2024] [Indexed: 02/27/2024]
Abstract
Bilateral gait symmetry is an essential requirement for normal walking since asymmetric gait patterns increase the risk of falls and injuries. While human gait control heavily relies on the contribution of sensory inputs, the role of sensory systems in producing symmetric gait has remained unclear. This study evaluated the influence of vision as a dominant sensory system on symmetric gait production. Ten healthy adults performed treadmill walking with and without vision. Twenty-two gait parameters including ground reaction forces, joint range of motion, and other spatial-temporal gait variables were evaluated to quantify gait symmetry and compared between both visual conditions. Visual block caused increased asymmetry in most parameters of ground reaction force, however mainly in the vertical direction. When vision was blocked, symmetry of the ankle and knee joint range of motion decreased, but this change did not occur in the hip joint. Stance and swing time symmetry decreased during no-vision walking while no significant difference was found for step length symmetry between the two conditions. This study provides a comprehensive analysis to reveal how the visual system influences bilateral gait symmetry and highlights the important role of vision in gait control. This approach could be applied to investigate how vision alters gait symmetry in patients with disorders to help better understand the role of vision in pathological gaits.
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Affiliation(s)
- Otella Shoja
- Faculty of Sport Sciences, Department of Motor Behavior, Alzahra University, Tehran, Iran
- Center for Interdisciplinary Research in Rehabilitation of Greater Montreal (CRIR), Montreal, QC, Canada
- Department of Neuroscience, Institute of Biomedical Engineering, University of Montreal, Montreal, QC, Canada
| | - Masoumeh Shojaei
- Faculty of Sport Sciences, Department of Motor Behavior, Alzahra University, Tehran, Iran
| | - Hamidollah Hassanlouei
- Faculty of Sport Science and Health, Department of Motor Behavior, Shahid Beheshti University, Tehran, Iran
| | - Farzad Towhidkhah
- Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Lei Zhang
- Institute for Neural Computation, Ruhr University Bochum, Bochum, Germany
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Wolska B, Domagała Ł, Kisilewicz A, Hassanlouei H, Makar P, Kawczyński A, Klich S. Multiple cryosauna sessions for post-exercise recovery of delayed onset muscle soreness (DOMS): a randomized control trial. Front Physiol 2023; 14:1253140. [PMID: 37772056 PMCID: PMC10523143 DOI: 10.3389/fphys.2023.1253140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 08/30/2023] [Indexed: 09/30/2023] Open
Abstract
The main goal was to investigate the effectiveness of cryosauna in preventing the development of delayed onset muscle soreness and to analyze the regenerative changes within muscles after acute fatigue-induced exercises. Thirty-one volunteers were assigned into two groups: 1) an intervention group that participated in cryostimulation after fatigue-induced exercise protocol (CRYO, n = 16) and a control group that performed fatigue-induced exercise protocol, but without any intervention (CONT, n = 15). Main outcome measures include at baseline: blood sample testing (leukocyte content, myoglobin concentration, and creatine kinase activity) and muscle stiffness of lower extremity; immediately after (stiffness), and 24-48-72-96 h post-exercise (blood samples and stiffness). Both groups performed an exercise-induced muscle damage protocol based on repeated countermovement jumps (10 sets, 10 repetitions). The CRYO group underwent a cryosauna (temperature: -110°C, time: 1.5 min per session) intervention during four sessions (i.e., immediately after, 24-48-72 h post-exercise). Leukocyte content was significantly greater 24-48-72 h after exercise in CONT, compared with the CRYO group (p ≤ 0.05 for all), while creatine kinase activity was greater 24-48-96 h in CONT, compared with the CRYO group (p ≤ 0.05 for all). Muscle stiffness increased significantly in rectus femoris, tibialis anterior, and fibula muscle after 48 h post-exercise (p ≤ 0.05 for all), as well as in tibialis anterior and fibula after 72 h post-exercise (p ≤ 0.05 for all) in the CRYO group. Multiple cryosauna was an effective recovery strategy that reduced blood biomarkers and muscle stiffness after exercise-induced muscle damage. Moreover, the development of delayed onset muscle soreness, expressed by a greater muscle stiffness post-exercise, was attenuated to the first 48 h.
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Affiliation(s)
- Beata Wolska
- Department of Combat Sports, Gdansk University of Physical Education and Sport, Gdansk, Poland
| | - Łukasz Domagała
- Department of Athletics, Gdansk University of Physical Education and Sport, Gdansk, Poland
| | | | - Hamidollah Hassanlouei
- Department of Cognitive and Behavioral Sciences and Technology in Sport, Shahid Beheshti University, Teheran, Iran
| | - Piotr Makar
- Department of Swimming, Gdansk University of Physical Education and Sport, Gdansk, Poland
| | - Adam Kawczyński
- Department of Biomechanics and Sport Engineering, Gdansk University of Physical Education and Sport, Gdansk, Poland
| | - Sebastian Klich
- Department of Paralympic Sport, Wrocław University of Health and Sport Sciences, Wrocław, Poland
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Shoja O, Towhidkhah F, Hassanlouei H, Levin MF, Bahramian A, Nadeau S, Zhang L, Feldman AG. Correction to: Reaction of human walking to transient block of vision: analysis in the context of indirect, referent control of motor actions. Exp Brain Res 2023:10.1007/s00221-023-06642-5. [PMID: 37212860 DOI: 10.1007/s00221-023-06642-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/16/2023] [Indexed: 05/23/2023]
Affiliation(s)
- Otella Shoja
- Department of Neuroscience, University of Montreal, Montreal, QC, Canada
| | - Farzad Towhidkhah
- Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Hamidollah Hassanlouei
- Department of Motor Behaviour, Faculty of Sport Science and Health, Shahid Beheshti University, Tehran, Iran
| | - Mindy F Levin
- School of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada
- Center for Interdisciplinary Research in Rehabilitation of Greater Montreal (CRIR), Montreal, QC, Canada
| | - Alireza Bahramian
- Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Sylvie Nadeau
- Center for Interdisciplinary Research in Rehabilitation of Greater Montreal (CRIR), Montreal, QC, Canada
- Faculté de Médecine-École de Réadaptation, Montreal, QC, Canada
| | - Lei Zhang
- Institute for Neural Computation, Ruhr University Bochum, Bochum, Germany
| | - Anatol G Feldman
- Department of Neuroscience, University of Montreal, Montreal, QC, Canada.
- Center for Interdisciplinary Research in Rehabilitation of Greater Montreal (CRIR), Montreal, QC, Canada.
- Institut de réadaptation Gingras-Lindsay-de-Montréal (IRGLM), 6300 Darlington, Montreal, QC, H3S 2J4, Canada.
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Shoja O, Shojaei M, Hassanlouei H, Towhidkhah F, Amiri M, Boroomand H, Rahimi N, Zhang L. Lack of visual information alters lower limb motor coordination to control center of mass trajectory during walking. J Biomech 2023; 155:111650. [PMID: 37245385 DOI: 10.1016/j.jbiomech.2023.111650] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 05/09/2023] [Accepted: 05/19/2023] [Indexed: 05/30/2023]
Abstract
Vision, as queen of the senses, plays a critical role in guiding locomotion. Little is known about the effects of vision on gait coordination in terms of variability. The uncontrolled manifold (UCM) approach offers a window to the structure of motor variability that has been difficult to obtain from the traditional correlation analysis. In this study, we used the UCM analysis to quantify how the lower limb motion is coordinated to control the center of mass (COM) while walking under different visual conditions. We also probed how synergy strength evolved along the stance phase. Ten healthy participants walked on the treadmill with and without visual information. Leg joint angle variance with respect to the whole-body COM was partitioned into good (i.e., the one that kept the COM) and bad (i.e., the one that changed the COM) variances. We observed that after vision was eliminated, both variances increased throughout the stance phase while the strength of the synergy (the normalized difference between the two variances) decreased significantly and even reduced to zero at heel contact. Thus, walking with restricted vision alters the strength of the kinematic synergy to control COM in the plane of progression. We also found that the strength of this synergy varied across different walking phases and gait events in both visual conditions. We concluded that the UCM analysis can quantify altered coordination of COM when vision is blocked and sheds insights on the role of vision in the synergistic control of locomotion.
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Affiliation(s)
- Otella Shoja
- Department of Motor Behavior, Faculty of Sport Sciences, Alzahra University, Tehran, Iran; Department of Neuroscience, University of Montreal, Montreal, QC, Canada.
| | - Masoumeh Shojaei
- Department of Motor Behavior, Faculty of Sport Sciences, Alzahra University, Tehran, Iran
| | - Hamidollah Hassanlouei
- Department of Motor Behavior, Faculty of Sport Sciences and Health, Shahid Beheshti University, Tehran, Iran
| | - Farzad Towhidkhah
- Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Mohsen Amiri
- Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Hesam Boroomand
- Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Negar Rahimi
- Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Lei Zhang
- Institute for Neural Computation, Ruhr University Bochum, Germany
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Shoja O, Towhidkhah F, Hassanlouei H, Levin MF, Bahramian A, Nadeau S, Zhang L, Feldman AG. Reaction of human walking to transient block of vision: analysis in the context of indirect, referent control of motor actions. Exp Brain Res 2023; 241:1353-1365. [PMID: 37010540 DOI: 10.1007/s00221-023-06593-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 03/05/2023] [Indexed: 04/04/2023]
Abstract
Human locomotion may result from monotonic shifts in the referent position, R, of the body in the environment. R is also the spatial threshold at which muscles can be quiescent but are activated depending on the deflection of the current body configuration Q from R. Shifts in R are presumably accomplished with the participation of proprioceptive and visual feedback and responsible for transferring stable body balance (equilibrium) from one place in the environment to another, resulting in rhythmic activity of multiple muscles by a central pattern generator (CPG). We tested predictions of this two-level control scheme. In particular, in response to a transient block of vision during locomotion, the system can temporarily slow shifts in R. As a result, the phase of rhythmical movements of all four limbs will be changed for some time, even though the rhythm and other characteristics of locomotion will be fully restored after perturbation, a phenomenon called long-lasting phase resetting. Another prediction of the control scheme is that the activity of multiple muscles of each leg can be minimized reciprocally at specific phases of the gait cycle both in the presence and absence of vision. Speed of locomotion is related to the rate of shifts in the referent body position in the environment. Results confirmed that human locomotion is likely guided by feedforward shifts in the referent body location, with subsequent changes in the activity of multiple muscles by the CPG. Neural structures responsible for shifts in the referent body configuration causing locomotion are suggested.
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Affiliation(s)
- Otella Shoja
- Department of Neuroscience, University of Montreal, Montreal, QC, Canada
| | - Farzad Towhidkhah
- Department of Biomedical Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Hamidollah Hassanlouei
- Department of Motor Behaviour, Faculty of Sport Science and Health, Shahid Beheshti University, Tehran, Iran
| | - Mindy F Levin
- School of Physical and Occupational Therapy, McGill University, Montreal, QC, Canada
- Center for Interdisciplinary Research in Rehabilitation of Greater Montreal (CRIR), Montreal, QC, Canada
| | - Alireza Bahramian
- Department of Neuroscience, University of Montreal, Montreal, QC, Canada
| | - Sylvie Nadeau
- Center for Interdisciplinary Research in Rehabilitation of Greater Montreal (CRIR), Montreal, QC, Canada
- Faculté de Médecine-École de Réadaptation, Montreal, QC, Canada
| | - Lei Zhang
- Institute for Neural Computation, Ruhr University Bochum, Bochum, Germany
| | - Anatol G Feldman
- Department of Neuroscience, University of Montreal, Montreal, QC, Canada.
- Center for Interdisciplinary Research in Rehabilitation of Greater Montreal (CRIR), Montreal, QC, Canada.
- Institut de réadaptation Gingras-Lindsay-de-Montréal (IRGLM), 6300 Darlington, Montreal, QC, H3S 2J4, Canada.
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Yazdani S, Dizji E, Alizadeh F, Hassanlouei H. Effect of chronic idiopathic low back pain on the kinetic gait characteristics in different foot masks. J Biomech 2018; 79:243-247. [DOI: 10.1016/j.jbiomech.2018.08.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 07/18/2018] [Accepted: 08/13/2018] [Indexed: 10/28/2022]
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Sundberg CW, Kuplic A, Hassanlouei H, Hunter SK. Mechanisms for the age-related increase in fatigability of the knee extensors in old and very old adults. J Appl Physiol (1985) 2018; 125:146-158. [PMID: 29494293 DOI: 10.1152/japplphysiol.01141.2017] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The mechanisms for the age-related increase in fatigability during high-velocity contractions in old and very old adults (≥80 yr) are unresolved. Moreover, whether the increased fatigability with advancing age and the underlying mechanisms differ between men and women is not known. The purpose of this study was to quantify the fatigability of knee extensor muscles and identify the mechanisms of fatigue in 30 young (22.6 ± 0.4 yr; 15 men), 62 old (70.5 ± 0.7 yr; 33 men), and 12 very old (86.0 ± 1.3 yr; 6 men) men and women elicited by high-velocity concentric contractions. Participants performed 80 maximal velocity contractions (1 contraction per 3 s) with a load equivalent to 20% of the maximum voluntary isometric contraction. Voluntary activation and contractile properties were quantified before and immediately following exercise (<10 s) using transcranial magnetic stimulation and electrical stimulation. Absolute mechanical power output was 97 and 217% higher in the young compared with old and very old adults, respectively. Fatigability (reductions in power) progressively increased across age groups, with a power loss of 17% in young, 31% in old, and 44% in very old adults. There were no sex differences in fatigability among any of the age groups. The age-related increase in power loss was strongly associated with changes in the involuntary twitch amplitude ( r = 0.75, P < 0.001). These data suggest that the age-related increased power loss during high-velocity fatiguing exercise is unaffected by biological sex and determined primarily by mechanisms that disrupt excitation contraction coupling and/or cross-bridge function. NEW & NOTEWORTHY We show that aging of the neuromuscular system results in an increase in fatigability of the knee extensors during high-velocity exercise that is more pronounced in very old adults (≥80 yr) and occurs similarly in men and women. Importantly, the age-related increase in power loss was strongly associated with the changes in the electrically evoked contractile properties suggesting that the increased fatigability with aging is determined primarily by mechanisms within the muscle for both sexes.
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Affiliation(s)
- Christopher W Sundberg
- Exercise Science Program, Department of Physical Therapy, Marquette University , Milwaukee, Wisconsin.,Clinical and Translational Rehabilitation Health Sciences Program, Department of Physical Therapy, Marquette University , Milwaukee, Wisconsin
| | - Andrew Kuplic
- Exercise Science Program, Department of Physical Therapy, Marquette University , Milwaukee, Wisconsin.,Clinical and Translational Rehabilitation Health Sciences Program, Department of Physical Therapy, Marquette University , Milwaukee, Wisconsin
| | - Hamidollah Hassanlouei
- Exercise Science Program, Department of Physical Therapy, Marquette University , Milwaukee, Wisconsin
| | - Sandra K Hunter
- Exercise Science Program, Department of Physical Therapy, Marquette University , Milwaukee, Wisconsin.,Clinical and Translational Rehabilitation Health Sciences Program, Department of Physical Therapy, Marquette University , Milwaukee, Wisconsin
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Rozand V, Senefeld JW, Hassanlouei H, Hunter SK. Voluntary activation and variability during maximal dynamic contractions with aging. Eur J Appl Physiol 2017; 117:2493-2507. [PMID: 29058113 DOI: 10.1007/s00421-017-3737-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 10/02/2017] [Indexed: 12/31/2022]
Abstract
Whether reduced supraspinal activation contributes to age-related reductions in maximal torque during dynamic contractions is not known. The purpose was to determine whether there are age differences in voluntary activation and its variability when assessed with stimulation at the motor cortex and the muscle during maximal isometric, concentric, and eccentric contractions. Thirty young (23.6 ± 4.1 years) and 31 old (69.0 ± 5.2 years) adults performed maximal isometric, shortening (concentric) and lengthening (eccentric) contractions with the elbow flexor muscles. Maximal isometric contractions were performed at 90° elbow flexion and dynamic contractions at a velocity of 60°/s. Voluntary activation was assessed by superimposing an evoked contraction with transcranial magnetic stimulation (TMS) or with electrical stimulation over the muscle during maximal voluntary contractions (MVCs). Old adults had lower MVC torque during isometric (- 17.9%), concentric (- 19.7%), and eccentric (- 9.9%) contractions than young adults, with less of an age difference for eccentric contractions. Voluntary activation was similar between the three contraction types when assessed with TMS and electrical stimulation, with no age group differences. Old adults, however, were more variable in voluntary activation than young (standard deviation 0.99 ± 0.47% vs. 0.73 ± 0.43%, respectively) to both the motor cortex and muscle, and had greater coactivation of the antagonist muscles during dynamic contractions. Thus, the average voluntary activation to the motor cortex and muscle did not differ with aging; however, supraspinal activation was more variable during maximal dynamic and isometric contractions in the old adults. Lower predictability of voluntary activation may indicate subclinical changes in the central nervous system with advanced aging.
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Affiliation(s)
- Vianney Rozand
- Exercise Science Program, Department of Physical Therapy, Marquette University, P.O. Box 1881, Milwaukee, WI, 53201, USA
| | - Jonathon W Senefeld
- Exercise Science Program, Department of Physical Therapy, Marquette University, P.O. Box 1881, Milwaukee, WI, 53201, USA
| | - Hamidollah Hassanlouei
- Exercise Science Program, Department of Physical Therapy, Marquette University, P.O. Box 1881, Milwaukee, WI, 53201, USA
| | - Sandra K Hunter
- Exercise Science Program, Department of Physical Therapy, Marquette University, P.O. Box 1881, Milwaukee, WI, 53201, USA.
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Hassanlouei H, Sundberg CW, Smith AE, Kuplic A, Hunter SK. Physical activity modulates corticospinal excitability of the lower limb in young and old adults. J Appl Physiol (1985) 2017; 123:364-374. [PMID: 28495848 DOI: 10.1152/japplphysiol.01078.2016] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 04/11/2017] [Accepted: 05/04/2017] [Indexed: 11/22/2022] Open
Abstract
Aging is associated with reduced neuromuscular function, which may be due in part to altered corticospinal excitability. Regular physical activity (PA) may ameliorate these age-related declines, but the influence of PA on corticospinal excitability is unknown. The purpose of this study was to determine the influence of age, sex, and PA on corticospinal excitability by comparing the stimulus-response curves of motor evoked potentials (MEP) in 28 young (22.4 ± 2.2 yr; 14 women and 14 men) and 50 old adults (70.2 ± 6.1 yr; 22 women and 28 men) who varied in activity levels. Transcranial magnetic stimulation was used to elicit MEPs in the active vastus lateralis muscle (10% maximal voluntary contraction) with 5% increments in stimulator intensity until the maximum MEP amplitude. Stimulus-response curves of MEP amplitudes were fit with a four-parameter sigmoidal curve and the maximal slope calculated (slopemax). Habitual PA was assessed with tri-axial accelerometry and participants categorized into either those meeting the recommended PA guidelines for optimal health benefits (>10,000 steps/day, high-PA; n = 21) or those not meeting the guidelines (<10,000 steps/day, low-PA; n = 41). The MEP amplitudes and slopemax were greater in the low-PA compared with the high-PA group (P < 0.05). Neither age nor sex influenced the stimulus-response curve parameters (P > 0.05), suggesting that habitual PA influenced the excitability of the corticospinal tract projecting to the lower limb similarly in both young and old adults. These findings provide evidence that achieving the recommended PA guidelines for optimal health may mediate its effects on the nervous system by decreasing corticospinal excitability.NEW & NOTEWORTHY Transcranial magnetic stimulation was used to determine whether achieving the recommended 10,000 steps/day for optimal health influenced the excitability of the corticospinal tract projecting to the knee extensor muscles. Irrespective of age and sex, individuals who achieved >10,000 steps/day had lower corticospinal excitability than those who performed <10,000 steps/day, possibly representing greater control of inhibitory and excitatory networks. Physical activity involving >10,000 steps/day may mediate its effects on the nervous system by decreasing corticospinal excitability.
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Affiliation(s)
- Hamidollah Hassanlouei
- Exercise Science Program, Department of Physical Therapy, Marquette University, Milwaukee, Wisconsin
| | - Christopher W Sundberg
- Exercise Science Program, Department of Physical Therapy, Marquette University, Milwaukee, Wisconsin.,Clinical and Translational Rehabilitation Health Sciences Program, Department of Physical Therapy, Marquette University, Milwaukee, Wisconsin; and
| | - Ashleigh E Smith
- Alliance for Research in Exercise Nutrition and Activity, Sansom Institute for Health Research, School of Health Science, University of South Australia, Adelaide, South Australia, Australia
| | - Andrew Kuplic
- Exercise Science Program, Department of Physical Therapy, Marquette University, Milwaukee, Wisconsin.,Clinical and Translational Rehabilitation Health Sciences Program, Department of Physical Therapy, Marquette University, Milwaukee, Wisconsin; and
| | - Sandra K Hunter
- Exercise Science Program, Department of Physical Therapy, Marquette University, Milwaukee, Wisconsin; .,Clinical and Translational Rehabilitation Health Sciences Program, Department of Physical Therapy, Marquette University, Milwaukee, Wisconsin; and
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Hassanlouei H, Sundberg CW, Kuplic A, Hunter SK. Is There a Sex Difference With Aging In Stimulus-Response Characteristics of The Lower Limb? Med Sci Sports Exerc 2016. [DOI: 10.1249/01.mss.0000486246.06948.35] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Nikoukheslat S, Salekzamani Y, Golami F, Jafari A, Hassanlouei H, Schmidt A, Boule NG. Effect of Aerobic Training on Neural Conduction in Type 2 Diabetes and Peripheral Neuropathy. Med Sci Sports Exerc 2016. [DOI: 10.1249/01.mss.0000486816.34365.29] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Sundberg CW, Hassanlouei H, Kuplic A, Hunter SK. Increased Fatigability Of Older Women Performing High-velocity Contractions Is Explained By Mechanisms Within The Muscle. Med Sci Sports Exerc 2016. [DOI: 10.1249/01.mss.0000486478.32231.bd] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Hassanlouei H, Falla D, Arendt-Nielsen L, Kersting U. The effect of six weeks endurance training on dynamic muscular control of the knee following fatiguing exercise. J Electromyogr Kinesiol 2014; 24:682-8. [DOI: 10.1016/j.jelekin.2014.06.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 05/23/2014] [Accepted: 06/10/2014] [Indexed: 12/26/2022] Open
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Hassanlouei H, Arendt-Nielsen L, Kersting U, Falla D. Effect of exercise-induced fatigue on postural control of the knee. J Electromyogr Kinesiol 2012; 22:342-7. [DOI: 10.1016/j.jelekin.2012.01.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2011] [Revised: 01/26/2012] [Accepted: 01/28/2012] [Indexed: 10/28/2022] Open
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Vila-Chã C, Hassanlouei H, Farina D, Falla D. Eccentric exercise and delayed onset muscle soreness of the quadriceps induce adjustments in agonist-antagonist activity, which are dependent on the motor task. Exp Brain Res 2011; 216:385-95. [PMID: 22094715 PMCID: PMC3262141 DOI: 10.1007/s00221-011-2942-2] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Accepted: 11/04/2011] [Indexed: 12/01/2022]
Abstract
This study investigates the effects of eccentric exercise and delayed onset muscle soreness (DOMS) of the quadriceps on agonist–antagonist activity during a range of motor tasks. Ten healthy volunteers (age, mean ± SD, 24.9 ± 3.2 years) performed maximum voluntary contractions (MVC) and explosive isometric contractions of the knee extensors followed by isometric contractions at 2.5, 5, 10, 15, 20, and 30% MVC at baseline, immediately after and 24 h after eccentric exercise of the quadriceps. During each task, force of the knee extensors and surface EMG of the vasti and hamstrings muscles were recorded concurrently. Rate of force development (RFD) was computed from the explosive isometric contraction, and the coefficient of variation of the force (CoV) signal was estimated from the submaximal contractions. Twenty-four hours after exercise, the subjects rated their perceived pain intensity as 4.1 ± 1.2 (score out of 10). The maximum RFD and MVC of the knee extensors was reduced immediately post- and 24 h after eccentric exercise compared to baseline (average across both time points: 19.1 ± 17.1% and 11.9 ± 9.8% lower, respectively, P < 0.05). The CoV for force during the submaximal contractions was greater immediately after eccentric exercise (up to 66% higher than baseline, P < 0.001) and remained higher 24 h post-exercise during the presence of DOMS (P < 0.01). For the explosive and MVC tasks, the EMG amplitude of the vasti muscles decreased immediately after exercise and was accompanied by increased antagonist EMG for the explosive contraction only. On the contrary, reduced force steadiness was accompanied by a general increase in EMG amplitude of the vasti muscles and was accompanied by increased antagonist activity, but only at higher force levels (>15% MVC). This study shows that eccentric exercise and subsequent DOMS of the quadriceps reduce the maximal force, rate of force development and force steadiness of the knee extensors, and is accompanied by different adjustments of agonist and antagonist muscle activities.
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Affiliation(s)
- C Vila-Chã
- Polytechnic Institute of Bragança, Bragança, Portugal
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Hedayatpour N, Hassanlouei H, Arendt-Nielsen L, Kersting UG, Falla D. Delayed-onset muscle soreness alters the response to postural perturbations. Med Sci Sports Exerc 2011; 43:1010-6. [PMID: 21088627 DOI: 10.1249/mss.0b013e3182058628] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
INTRODUCTION Eccentric contractions induce muscle fiber damage that is associated with delayed-onset muscle soreness and an impaired ability of the muscle to generate voluntary force. Pain and pathophysiological changes within the damaged muscle can delay or inhibit neuromuscular responses at the injured site, which is expected to have an effect on reflex activity of the muscle. PURPOSE The aim of the study was to investigate the reflex activity of knee muscles to rapid destabilizing perturbations, before, immediately after, and 24 and 48 h after eccentric exercise. METHODS Bipolar surface EMG signals were recorded from 10 healthy men with seven pairs of electrodes located on the knee extensor muscles (vastus medialis, rectus femoris, and vastus lateralis) and knee flexor muscles (the medial and lateral heads of the hamstring and the medial and lateral heads of gastrocnemius) of the right leg during rapid perturbations. RESULTS The maximal voluntary contraction force decreased by 24% ± 4.9% immediately after exercise and remained reduced by 21.4% ± 4.1% at 24 h and by 21.6% ± 9.9% at 48 h after exercise with respect to baseline. During the postexercise postural perturbations, the EMG average rectified value of the knee extensor muscles was significantly lower than baseline (P < 0.001). Moreover, the decrease in average rectified value over time during postexercise sustained contractions was greatest compared with the session before exercise (P < 0.0001). CONCLUSIONS Reflex activity in leg muscles elicited by rapid destabilizing perturbations is reduced after exercise-induced muscle soreness.
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Affiliation(s)
- Nosratollah Hedayatpour
- Centre for Sensory-Motor Interaction, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
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Hedayatpour N, Hassanlouei H, Nielsen LA, Kersting UG, Falla D. Delayed-Onset Muscle Soreness Alters the Response to Postural Perturbations. Med Sci Sports Exerc 2011. [DOI: 10.1249/01.mss.0000401454.85965.28] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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