Disturbed motor control of rhythmic movement at 2 h and delayed after maximal eccentric actions

Bottas, Reijo; Miettunen, Kari; Komi, Paavo V.; Linnamo, Vesa

doi:10.1016/j.jelekin.2009.11.010

Cited by 10 publications

(10 citation statements)

References 59 publications

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“…Furthermore, the author in [11] demonstrated that the TB is a long muscle on the posterior humerus which consists of a three-headed and fusiform arrangement, and operates as a third-class lever because force is applied between the joint axis and the load. Various sEMG findings associated with the TB and the processing methods used to analyse the TB have been focused on a large number of muscular activities, for example muscle fatigue [12][13][14][15], force [16,17], and motor unit action potential [18,19]. These activities of the TB are generally investigated because of their physiological importance in exercise [20][21][22], rehabilitation [23][24][25], sports science [26][27][28], and signal processing for prosthesis control applications [29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of repetitive isometric contractions on the heads of triceps brachii muscle during grip force exercise

Ali

Sundaraj

Ahmad

et al. 2014

THC

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OBJECTIVES: Normally, surface electromyography electrodes are used to evaluate the activity of superficial muscles during various kinds of voluntary contractions of muscle fiber. The objective of the present study was to investigate the effect of repetitive isometric contractions on the three heads of the triceps brachii muscle during handgrip force exercise. METHODS: Myoelectric signals were recorded from the lateral, long and medial heads of the triceps brachii muscle in 13 healthy males during maximal isometric contractions for 10 s of concurrent handgrip force and elbow extension. The subjects were asked to perform their contraction task five times with 3 minutes interval between two successive contractions. RESULTS: Decreasing electromyographic activities were found for the lateral and long heads, and increasing for the medial head throughout the 5 different contractions. Electromyographic activities were found for the lateral head with mean = 199.84, SD = 7.65, CV = 3.83%, the long head with mean = 456.76, SD = 18.10, CV = 3.96%, and the medial head with mean = 505.16, SD = 8.47, CV = 1.68%. Electromyographic activities among the three heads of triceps brachii were significantly different (F = 3.82) at the alpha level of (p < 0.05). CONCLUSIONS: These findings support that repetitive isometric contractions decrease the contractile activity in the lateral and long heads, and increases in the medial head of the triceps brachii muscle during handgrip force exercise with full elbow extension, and the electromyographic activity changes are observed to be more significant at the long head as compared to the lateral and medial heads.

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Section: Introductionmentioning

confidence: 99%

Evaluation of repetitive isometric contractions on the heads of triceps brachii muscle during grip force exercise

Ali

Sundaraj

Ahmad

et al. 2014

THC

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“…An eccentric muscle action is used when the muscle lengthens to lower a load (e.g., the downward movement of a bicep curl) and generally, an eccentric action occurs when the muscle unsuccessfully resists elongation, acting as a brake. However, lengthening the muscle during eccentric actions may lead to muscle damage (Hoppeler, ; Paschalis et al., ), and is characterized by sustained loss of muscle force and range of motion (Nosaka et al., ; Paschalis et al., ), large increases of muscle proteins in the blood (Nikolaidis et al., ; Muthalib et al., ; Theodorou et al., ), as well as development of delayed‐onset muscle soreness (DOMS; Lavender & Nosaka, ; Paschalis et al., ), and swelling (Proske & Allen, ; Bottas et al., ). These changes typically begin approximately 6 h after unaccustomed exercise, peak at 1–3 days, and subside 4–7 days after exercise (Armstrong, ; Weerakkody et al., ; Paschalis et al., ).…”

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No adverse effects of statins on muscle function and health‐related parameters in the elderly: An exercise study

Panayiotou

Paschalis

Nikolaidis

et al. 2012

Scandinavian Med Sci Sports

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The aim of the present study was to investigate the effects of a repeated bout of eccentric exercise on health-related parameters and muscle performance on subjects undergoing atorvastatin therapy. Twenty-eight elderly men participated in the investigation and were assigned either in a control (n = 14) or in a statin therapy group (n = 14). All participants performed two isokinetic eccentric exercise bouts separated by 3 weeks. Muscle damage indices, resting energy expenditure, substrate metabolism, lipid and lipoprotein profile, as well as insulin sensitivity, were evaluated before and after eccentric. No differences in muscle function were observed between the two groups either at rest or after exercise. Eccentric exercise increased resting energy expenditure, increased fat oxidation, improved lipid profile, and increased insulin resistance 2 days after both eccentric exercise bouts. However, these changes appeared to lesser extent after the second bout. No differences were observed in the responses in the health-related parameters in the control and in the statin therapy group. Eccentric exercise affected similarly the control and the atorvastatin-treated individuals. The present results indicate that atorvastatin-treated elderly individuals may participate in various physical activities, even high-intensity muscle-damaging activities, without negative impact on muscle function and adaptation.

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“…The muscle damage recovery process, with associated symptoms e.g., soreness and inflammation, affect both the central and reflex components of muscle activation (Gandevia, 2001), and have been shown to modulate the muscle activity pattern of dynamic voluntary movements (Bottas, Linnamo, Nicol & Komi, 2005;Bottas, Linnamo, Nicol & Komi, 2009a). In addition, muscle damage related mechanical changes such as swelling, reduced joint range of motion (e.g., Clarkson, Nosaka & Braun, 1992;Whitehead, Weerakkody, Gregory & Morgan, 2001), and increased passive stiffness (e.g., Howell, Chleboun & Conatser, 1993;Whitehead, Morgan, Gregory & Proske, 2003), are very likely to influence dynamic performance for several days (Bottas, Miettunen, Komi & Linnamo, 2010a).…”

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confidence: 99%

“…Associated to the recoil of elastic energy the potentiated activity contributes to force production (Cavagna, 1977;Gollhofer, Komi, Fujitsuka & Miyashita, 1987;Komi & Gollhofer, 1997). Studying eccentric muscle fatigue, we have recently shown that peripheral reflex information may play a significant role in the motor control of maximal velocity elbow movements wherein the antagonistic muscles are activated reciprocally (Bottas et al, 2005;Bottas et al, 2009a;Bottas et al, 2010a). Repeated eccentric actions of elbow flexors modulate the antagonistic muscles' timing and the triphasic activity pattern of the target movement (Bottas et al, 2005), and may have led to both acute (Bottas et al, 2010a) and delayed changes in the fatigued muscle activity burst during the rhythmic movement (Bottas et al, 2009a).…”

mentioning

confidence: 99%

“…Studying eccentric muscle fatigue, we have recently shown that peripheral reflex information may play a significant role in the motor control of maximal velocity elbow movements wherein the antagonistic muscles are activated reciprocally (Bottas et al, 2005;Bottas et al, 2009a;Bottas et al, 2010a). Repeated eccentric actions of elbow flexors modulate the antagonistic muscles' timing and the triphasic activity pattern of the target movement (Bottas et al, 2005), and may have led to both acute (Bottas et al, 2010a) and delayed changes in the fatigued muscle activity burst during the rhythmic movement (Bottas et al, 2009a). These findings were suggested to be due to acute metabolic (Bottas et al, 2005) and both acute and delayed inflammatory substances (Bottas et al, 2009a;Bottas et al, 2010a) within the muscles sensitizing the group III and IV muscle afferents (Bottas et al, 2010a).…”

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confidence: 99%

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Acute (0-2h) and Delayed (2-8D) Effects of Exercise-Induced Muscle Damage and Soreness on Elbow Target Movements

Bottas

Miettunen²,

Komi³

et al. 2011

Motor Control

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The aim was to examine the acute and delayed effects of exercise-induced muscle damage and soreness on elbow target movements (TM) performance and control. Ten males performed an exercise of 50 maximal eccentric elbow actions. TMs were performed at three movement ranges. Maximal forces, active stretch reflex and TM were tested, and muscle soreness, creatine kinase and elbow joint stiffness were determined acute (after and 2 h) and delayed (2, 4, 6, 8d) postexercise. Both the long lasting muscle soreness and force drop were observed after the exercise. Joint stiffness was increased at 2 h postexercise. The highest deterioration in flexion-TM performance was found at the time (2 h) and at the elbow angles (most flexed) where force drop was the greatest. The increased TM time was concomitant with the flexors changed timing, decreased peak EMG, and with their reduced stretch reflex amplitude. However, the effects on triphasic EMG activity pattern of TM were not joint angle specific. Dysfunction of fastest motor units and the sensitization of small group III / IV muscle afferents might have been responsible for the amplitude modulations of the activity pattern.

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Disturbed motor control of rhythmic movement at 2 h and delayed after maximal eccentric actions

Cited by 10 publications

References 59 publications

Evaluation of repetitive isometric contractions on the heads of triceps brachii muscle during grip force exercise

Evaluation of repetitive isometric contractions on the heads of triceps brachii muscle during grip force exercise

No adverse effects of statins on muscle function and health‐related parameters in the elderly: An exercise study

Acute (0-2h) and Delayed (2-8D) Effects of Exercise-Induced Muscle Damage and Soreness on Elbow Target Movements

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