Strength training can improve steadiness in persons with essential tremor

Beznoska, Martin; Keen, Douglas A.; Sweeney, Patrick J.; Shields, Robert W.; Enoka, Roger M.

doi:10.1002/(sici)1097-4598(200005)23:5<771::aid-mus15>3.0.co;2-9

Cited by 85 publications

(55 citation statements)

References 24 publications

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“…On the contrary, the movement frequency decreased by attachment of mechanical resistance such as inertial load [7,18]. Change in inertial load would alter the resonant frequency of the mechanical system, however sensory stimulation is considered to work on a different mechanism because the main frequency did not change much.…”

Section: Discussionmentioning

confidence: 99%

Sensory electrical stimulation for suppression of postural tremor in patients with essential tremor

Heo

Kim

Kwon

et al. 2015

BME

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Abstract. Essential tremor is an involuntary trembling of body limbs in people without tremor-related disease. In previous study, suppression of tremor by sensory electrical stimulation was confirmed on the index finger. This study investigates the effect of sensory stimulation on multiple segments and joints of the upper limb. It denotes the observation regarding the effect's continuity after halting the stimulation. 18 patients with essential tremor (8 men and 10 women) participated in this study. The task, "arms stretched forward", was performed and sensory electrical stimulation was applied on four muscles of the upper limb (Flexor Carpi Radialis, Extensor Carpi Radialis, Biceps Brachii, and Triceps Brachii) for 15 seconds. Three 3-D gyro sensors were used to measure the angular velocities of segments (finger, hand, and forearm) and joints (metacarpophalangeal and wrist joints) for three phases of pre-stimulation (Pre), during-stimulation (On), and 5 minute poststimulation (P5). Three characteristic variables of root-mean-squared angular velocity, peak power, and peak power frequency were derived from the vector sum of the sensor signals. At On phase, RMS velocity was reduced from Pre in all segments and joints while peak power was reduced from Pre in all segments and joints except for forearm segment. Sensory stimulation showed no effect on peak power frequency. All variables at P5 were similar to those at On at all segments and joints. The decrease of peak power of the index finger was noted by 90% during stimulation from that of On phase, which was maintained even after 5 min. The results indicate that sensory stimulation may be an effective clinical method to treat the essential tremor.

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Section: Discussionmentioning

confidence: 99%

Sensory electrical stimulation for suppression of postural tremor in patients with essential tremor

Heo

Kim

Kwon

et al. 2015

BME

View full text Add to dashboard Cite

show abstract

“…Although this approach is inferior to randomly allocating participants to the three groups via a randomized controlled trial model, such an approach has been used previously in a comparable study (e.g., Bilodeau, Keen, Sweeney, Shields, & Enoka, 2000). In the control group, 2 participants dropped out before the posttraining testing session.…”

Section: Methods Participantsmentioning

confidence: 99%

Strength and Coordination Training Are Both Effective in Reducing the Postural Tremor Amplitude of Older Adults

Keogh¹,

Morrison²,

Barrett³

2010

Journal of Aging and Physical Activity

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The current study investigated the effect of 2 different types of unilateral resistance training on the postural tremor output of 19 neurologically healthy men age 70-80 yr. The strength-(n = 7) and coordination-training (n = 7) groups trained twice a week for 6 wk, performing dumbbell biceps curls, wrist flexions, and wrist extensions, while the control group (n = 5) maintained their normal activities. Changes in index-finger tremor (RMS amplitude, peak, and proportional power) and upper limb muscle coactivation were assessed during 4 postural conditions that were performed separately with the trained and untrained limbs. The 2 training groups experienced significantly greater reductions in mean RMS tremor amplitude, peak, and proportional tremor power 8-12 Hz and upper limb muscle coactivation, as well as greater increases in strength, than the control group. These results further demonstrate the benefits of resistance training for improving function in older adults.

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“…Irregularity in torque performance during submaximal efforts has been associated with age (Graves et al, 2000;Tracy and Enoka, 2002) and with strength training level (Bilodeau et al, 2000;Laidlaw et al, 1999). In general, younger and fitter individuals demonstrate steadier torque production, which is normally necessary for improved motor performance.…”

Section: Article In Pressmentioning

confidence: 99%

Frequency content asymmetry of the isokinetic curve between ACL deficient and healthy knee

Tsepis

Giakas

Vagenas

et al. 2004

Journal of Biomechanics

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Strength training can improve steadiness in persons with essential tremor

Cited by 85 publications

References 24 publications

Sensory electrical stimulation for suppression of postural tremor in patients with essential tremor

Sensory electrical stimulation for suppression of postural tremor in patients with essential tremor

Strength and Coordination Training Are Both Effective in Reducing the Postural Tremor Amplitude of Older Adults

Frequency content asymmetry of the isokinetic curve between ACL deficient and healthy knee

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