The effect of repetitive ankle perturbations on muscle reaction time and muscle activity

Thain, Peter; Hughes, Gerwyn; Mitchell, Andrew C.S.

doi:10.1016/j.jelekin.2016.07.004

Cited by 7 publications

(8 citation statements)

References 39 publications

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“…As opposed to these results, Di Giminiani and collagenous investigated the EMGRMS activities in the GL at different frequencies and positions. Their results indicate that lower frequencies of vibration (25)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35) resulted in maximal activation of GL (averaged values of four body positions) than higher frequencies [6]. They suggested that ankle muscles were highly influenced by body position therefore, the different body positions may be affected the findings.…”

Section: The Study Was Supported By Gazi University Projects Of Scienmentioning

confidence: 99%

“…Tibialis anterior -1/3 on the line between the tip of the fibula and the tip of the medial malleolus; peroneus longus -25% on the line between the tip of the head of the fibula to the tip of the lateral malleolus; gastrocnemius medialis -on the most prominent bulge of the muscle; and gastrocnemius lateralis -1/3 of the line between the head of the fibula and the heel) [12,29,34]. All electrodes were fixed by double-sided tape to guarantee that they remain stable throughout the session and the cables were carefully fixed by tape to the skin.…”

Section: Whole-body Vibration Protocolmentioning

confidence: 99%

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Untitled

2019

IJAEP

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Usage of the whole-body vibration (WBV) is effective in preventing the ankle injuries caused by increasing neuromuscular activity. The aim of this study was to investigate effective frequencies for neuromuscular activity of ankle muscles. A single-group, repeatedmeasures study design was used. Twenty-three healthy subjects (age 23.91±3.07, BMI 22.66±3.39) participated in this study. This study investigated the effects of WBV on the EMG responses of the Tibialis Anterior (TA), Peroneus Longus (PL), Gastrocnemius Medial (GM) and Lateral heads (GL). The muscle activity was measured with an 8-channel EMG Noraxon MiniDTS system (Noraxon, USA, Inc, Scottsdale, AZ) during 0, 20, 40 and 60 Hz of vibration. The Physio Plate® vibration platform (Physio Plate®, Domino S.R.L, San Vendemiano, Italy) was used to deliver mechanical vibration. Compared with no vibration condition; EMG activity of all ankle muscles were significantly increased from at 60 Hz (123 % in TA, 64 % in PL, 53 % in GM, 77 % in GL) (p<0.01). At 40 Hz of vibration frequency, EMG responses of GM and GL was significantly increased (27 % and 53%, respectively) (p<0.01). Only GL was significantly increased of 33 % at 20 Hz (p<0.01). It could be concluded that using higher frequencies at whole-body vibration exercises are more effective than lower frequencies on ankle muscles' EMG activities. During squat exercises on the WBV platform, higher frequencies should be used to increase ankle muscle activation. 1. Introduction Ankle sprains are accepted as the most common sports and physical activity related injuries [35]. An acute ankle sprain causes pain, function loss and economic burden [31]. Moreover, most of the patients with history of ankle sprain tend to repeat their injury [9]. Because of these reasons emphasis should be put on the importance of preventive intervention for the ankle. Neuromuscular training is one of the popular intervention which is used to prevent ankle sprain and includes challenging the ability of related joints to detect external stimulus and produce desired response to stimulus [10, 31]. Whole-Body Vibration (WBV) trainings take place both in preventive programs and in rehabilitation protocols [22], as neuromuscular training techniques [2, 21] and exercise modality [13]. WBV trainings are exercises performed on a platform that creates an oscillation with certain frequency and amplitude [24]. It is believed that the vibration stimulus can move the muscle spindle to cause stimulation of alpha motor neurons, thereby increasing muscle contraction [19, 26], and motor unit synchronization [14] because muscles try

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Section: The Study Was Supported By Gazi University Projects Of Scienmentioning

confidence: 99%

Section: Whole-body Vibration Protocolmentioning

confidence: 99%

Untitled

2019

IJAEP

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“…Other health issues are related to physical [11,12] and psychological effects [21]. Some research has focused on ergonomics [22,23] and suggests that poor ergonomic design can have a negative result on a worker's musculoskeletal system, resulting in muscle fatigue [24], and may even progress into musculoskeletal disease [25]. All these health issues take time to develop.…”

Section: Health and Safety In The Manufacturing Industrymentioning

confidence: 99%

Measuring Industrial Health Using a Diminished Quality of Life Instrument

Pons

Pearse

2018

Safety

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Historically, the focus of industrial health and safety (H&S) has been on safety and accident avoidance with relatively less attention to long-term occupational health other than via health monitoring and surveillance. The difficulty is the multiple overlapping health consequences that are difficult to separate, measure, and attribute to a source. Furthermore, many health problems occur later, not immediately on exposure, and may be cumulative. Consequently, it is difficult to conclusively identify the cause. Workers may lack knowledge of long-term consequences, and thus not use protective systems effectively. Compounding this is the lack of instruments and methodologies to measure exposure to harm. Historically, the existing risk methodologies for calculating safety risk are based on the construct of consequence and likelihood. However, this may not be appropriate for health, especially for the long-term harm, as both the consequence and likelihood may be indeterminate. This paper develops an instrument to measure the health component of workplace H&S. This is achieved by adapting the established World Health Organization Disability Assessment Schedule (WHODAS) quality of life score to workplace health. Specifically, the method is to identify the likelihood of an exposure incident arising (as estimated by engineering technologists and H&S officers), followed by evaluation of the biological harm consequences. Those consequences are then scored by using the WHODAS 12-item inventory. The result is an assessment of the Diminished Quality of Life (DQL) associated with a workplace hazard. This may then be used to manage the minimization of harm, exposure monitoring, and the design of safe systems of work.

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“…The time latency required for peroneal muscles to react against a sudden inversion perturbation is termed as peroneal reaction time (Thain et al, 2016). Peroneal reaction time in healthy ankle ranged from 55 to 85 ms (Dufek & Bates, 1991;Eechaute et al, 2009;Fernandes et al, 2000;Hoch & McKeon, 2014;Konradsen & Bohsen Ravn, 1991;Konradsen et al, 1998;Hopkins et al, 2007).…”

Section: Introductionmentioning

confidence: 99%