Single measurement reliability and reproducibility of volitional and magnetically-evoked indices of neuromuscular performance in adults

Minshull, Claire; Gleeson, Nigel; Eston, Roger G.; Bailey, Andrea; Rees, David

doi:10.1016/j.jelekin.2008.07.002

Cited by 19 publications

(19 citation statements)

References 25 publications

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“…In contrast, there is evidence for selective preservation of sensorimotor performance capabilities following EIMD that would otherwise make the SR-related improvements to sensorimotor performance observed in this study more noteworthy. Unilateral balance performance had been altered only at 24 h after EIMD, coinciding with peak alterations to PF and DOMS [24], with the authors speculating that efficient regulation of movement is routine in the presence of less severe damage and that proprioceptive function is only compromised under extremes of exercise-related stress. The preservation of normal muscle activation latencies [3,24,31] might highlight a protective conservation of biological resources and enhanced emergency reflex processes.…”

Section: Discussionmentioning

confidence: 99%

“…Unilateral balance performance had been altered only at 24 h after EIMD, coinciding with peak alterations to PF and DOMS [24], with the authors speculating that efficient regulation of movement is routine in the presence of less severe damage and that proprioceptive function is only compromised under extremes of exercise-related stress. The preservation of normal muscle activation latencies [3,24,31] might highlight a protective conservation of biological resources and enhanced emergency reflex processes. Future studies should focus attention on whether other and more potent methods for delivering SR (for example, functional electrical stimulation) amongst episodes of EIMD might offer greater efficacy and effectiveness in enhancing sensorimotor performance under adverse conditions of exercise stress and strain responses.…”

Section: Discussionmentioning

confidence: 99%

“…Similarly, no SR and placebo conditions involved the same procedure but with vibration amplitude' end-points of zero and sub-threshold by deception, respectively. Vibration amplitude for each condition was verified by a three-dimentional accelerometer application (RS Electronics, TE 3038-0050; 0-1.2 KHz) adjacent to the tendon fitting of the stimulation device and interfaced to electronic recording components [24].…”

Section: Stochastic Resonance Protocolmentioning

confidence: 99%

“…Participants were secured in a prone position on a purpose-built dynamometer [24] with the knee flexed to a functionally relevant angle of 25 • (0.44 rad) (0 • = full extension) [25]. The bi-lateral lever-arms of the dynamometer were attached to the legs of the participant by padded ankle-cuffs and adjustable strapping just proximal to the lateral malleolus.…”

Section: Assessment Of Peak Forcementioning

confidence: 99%

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Effects of Stochastic Resonance on Sensorimotor Performance during Exercise-Induced Muscle Damage

Gleeson

2017

JFMK

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Abstract:The aim of this study was to assess the effects of stochastic resonance (SR) stimulation on sensorimotor performance during an episode of exercise-induced muscle damage (EIMD). Thirty four men (age: 21.3 (±2.6) years; height 1.78 (±0.06) m; body mass 72.3 (±7.4) kg (mean (±SD)) gave their informed consent to participate in this study.Sensorimotor performance (error in replicating a target force) of the knee flexors was assessed prior to, and at 0.5 and 48 h after (i) a treatment condition involving a single-leg EIMD conditioning of the non-preferred leg, with concomitant responses to (ii) randomised presentation of SR, no SR and placebo conditions. Results showed a significant ANOVA interaction for sensorimotor performance amongst factors of condition (control period; EIMD), time (pre; post 0.5 h; post 48 h) and stimuli (SR; no SR; placebo) (F [1.5,29.3] = 5.7; p < 0.01). While scores during an antecedent control period had remained relatively constant, the EIMD protocol had elicited increased error in replicating a target force for the knee flexors of the non-preferred leg over time (worsened sensorimotor performance) that had been most prominent at 48 h after exercise, but whose negative effects had been ameliorated under conditions of SR (5.6 ± 3.1% (no SR) versus 3.7 ± 2.3% (SR) (pre) and 10.3 ± 4.2% (no SR) versus 8.1 ± 5.1% (SR) (48 h), respectively; F [1,36] = 6.0; p < 0.01). In conclusion, this study has shown that SR conditioning-related increases in the sensorimotor performance of the hamstring muscle group led to some protection from performance loss following EIMD.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Stochastic Resonance Protocolmentioning

confidence: 99%

Section: Assessment Of Peak Forcementioning

confidence: 99%

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Effects of Stochastic Resonance on Sensorimotor Performance during Exercise-Induced Muscle Damage

Gleeson

2017

JFMK

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“…On each test occasion and prior to testing, participants were asked to rate their perceived soreness and provide a fingertip blood sample before being secured in a prone position on a custom-built dynamometer (Minshull et al, 2009). The bilateral lever-arms of the dynamometer were attached to the legs of the participant by means of padded ankle-cuffs and adjustable strapping just proximal to the lateral malleolus.…”

Section: Experimental Procedures and Designmentioning

confidence: 99%

Knee joint neuromuscular activation performance during muscle damage and superimposed fatigue

Minshull

Eston

Rees

et al. 2012

Journal of Sports Sciences

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Paired changes in electromechanical delay and musculo-tendinous stiffness after endurance or plyometric training

et al. 2008

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When measured in vivo electromechanical delay (EMD) depends mainly on the elastic properties of the muscle-tendon unit. Recent studies have shown changes in stiffness of the triceps surae (TS) following a period of training. To confirm the influence of musculo-tendinous stiffness on EMD, this study investigates paired changes in these two parameters after a training period. Two types of training known to induce opposite changes in stiffness were analysed. EMD and musculo-tendinous stiffness were measured on adult subjects before and after 10 weeks of endurance (n = 21) or plyometric (n = 9) trainings. EMD was defined as the time lag between the TS M-wave latency and the onset of muscle twitch evoked at rest by supramaximal electrical stimulations of the posterior tibial nerve. Quick release tests were used to evaluate the musculo-tendinous stiffness of the ankle plantar flexors. The stiffness index was defined as the slope of the relationship between angular stiffness and external torque values. Endurance training, known to preferentially activate the slow, stiffer muscle fibers, leads to a decrease in EMD and to an increase in stiffness index. Following plyometric training, which specifically recruits fast, more compliant fibers, EMD and the stiffness index exhibited adaptations directionally opposite to those seen with endurance training. When pooling the data for the two subject groups, a correlation was found between changes in EMD and changes in musculo-tendinous stiffness indexes. Thus, changes in EMD values are proposed to indirectly link to changes in musculo-tendinous stiffness for subjects involved in muscle training.

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Single measurement reliability and reproducibility of volitional and magnetically-evoked indices of neuromuscular performance in adults

Cited by 19 publications

References 25 publications

Effects of Stochastic Resonance on Sensorimotor Performance during Exercise-Induced Muscle Damage

Effects of Stochastic Resonance on Sensorimotor Performance during Exercise-Induced Muscle Damage

Knee joint neuromuscular activation performance during muscle damage and superimposed fatigue

Paired changes in electromechanical delay and musculo-tendinous stiffness after endurance or plyometric training

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