Muscle Activity Restriction Taping Technique simulates the reduction in foot-ground clearance in the elderly

We investigated the possible effects of auditory verbal cues on flavor perception and swallow physiology for younger and elder participants. Apple juice, aojiru (grass) juice, and water were ingested with or without auditory verbal cues. Flavor perception and ease of swallowing were measured using a visual analog scale and swallow physiology by surface electromyography and cervical auscultation. The auditory verbal cues had significant positive effects on flavor and ease of swallowing as well as on swallow physiology. The taste score and the ease of swallowing score significantly increased when the participant’s anticipation was primed by accurate auditory verbal cues. There was no significant effect of auditory verbal cues on distaste score. Regardless of age, the maximum suprahyoid muscle activity significantly decreased when a beverage was ingested without auditory verbal cues. The interval between the onset of swallowing sounds and the peak timing point of the infrahyoid muscle activity significantly shortened when the anticipation induced by the cue was contradicted in the elderly participant group. These results suggest that auditory verbal cues can improve the perceived flavor of beverages and swallow physiology.

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Characteristics of Lower Limb Muscle Activity in Elderly Persons After Ergometric Exercise

Gerontology and Geriatric Medicine ◽

10.1177/2333721420979800 ◽

2020 ◽

Vol 6 ◽

pp. 233372142097980

Author(s):

Kenichi Kaneko ◽

Hitoshi Makabe ◽

Kazuyuki Mito ◽

Kazuyoshi Sakamoto ◽

Yoshiya Kawanori ◽

...

Keyword(s):

Lower Limb ◽

Muscle Activity ◽

The Elderly ◽

Elderly Subjects ◽

Elderly Persons ◽

Lower Limb Muscle ◽

Limb Muscle ◽

Lower Limb Muscles ◽

The Mean ◽

Young Subjects

This study examined the characteristics of lower limb muscle activity in elderly persons after ergometric pedaling exercise for 1 month. To determine the effect of the exercise, surface electromyography (SEMG) of lower limb muscles was subjected to Daubechies-4 wavelet transformation, and mean wavelet coefficients were compared with the pre-exercise coefficients and the post-exercise coefficients in each wavelet level. The characteristics of muscle activity after pedaling exercise were also compared between the elderly subjects and young subjects. For the elderly subjects, the mean wavelet coefficients were significantly decreased in the tibialis anterior and the gastrocnemius medialis at wavelet levels of 3, 4, and 5 (125–62.5, 62.5–31.25, and 31.25–15.625 Hz, respectively), by pedaling exercise. However, the mean power of wavelet levels of 2 and 3 (250–125 and 125–62.5 Hz) within the rectus femoris and the biceps femoris were significantly increased in the young subjects. The effect of pedaling exercise is different from the effects of heavy-resistance training. It was suggested that the muscle coordination, motor unit (MU) firing frequency, and firing fiber type of lower limb muscles are changed with the different characteristics between elderly and young persons by pedaling exercise for 1 month.

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FEATURES OF sEMG BASED ON SOURCE SEPARATION AND FRACTAL PROPERTIES TO DETECT WRIST MOVEMENTS

Biomedical Engineering Applications Basis and Communications ◽

10.4015/s1016237210002080 ◽

2010 ◽

Vol 22 (04) ◽

pp. 293-300 ◽

Cited By ~ 3

Author(s):

Sridhar P. Arjunan ◽

Dinesh K. Kumar ◽

Ganesh R. Naik

Keyword(s):

Muscle Activity ◽

Source Separation ◽

The Elderly ◽

Human Computer Interface ◽

Wrist Flexion ◽

Accurate Identification ◽

Fractal Properties ◽

Finger Flexion ◽

Interface Devices

Classification of surface electromyogram (sEMG) for identification of hand and finger flexions has a number of applications such as sEMG-based controllers for near elbow amputees and human-computer interface devices for the elderly. However, the classification of an sEMG becomes difficult when the level of muscle contraction is low and when there are multiple active muscles. The presence of noise and crosstalk from closely located and simultaneously active muscles is exaggerated when muscles are weakly active such as during sustained wrist and finger flexion and of people with neuropathological disorders or who are amputees. This paper reports analysis of fractal length and fractal dimension of two channels to obtain accurate identification of hand and finger flexion. An alternate technique, which consists of source separation of an sEMG to obtain individual muscle activity to identify the finger and hand flexion actions, is also reported. The results show that both the fractal features and muscle activity obtained using modified independent component analysis of an sEMG from the forearm can accurately identify a set of finger and wrist flexion-based actions even when the muscle activity is very weak.

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Comparison of The Effects of Respiratory Exercise between Smokers and Non-smokers on Pulmonary Function and Muscle Activity of Rectus Abdominis with Function and Muscle Activity of Rectus Abdominis with The Elderly People

Journal of international academy of physical therapy research ◽

10.20540/jiaptr.2017.8.2.1146 ◽

2017 ◽

Vol 8 (2) ◽

pp. 1146-1151

Author(s):

Hyun Ju Jun ◽

Ki Jong Kim

Keyword(s):

Pulmonary Function ◽

Elderly People ◽

Muscle Activity ◽

The Elderly ◽

Rectus Abdominis

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Psychological, Physical, and Sensory Correlates of Fear of Falling and Consequent Activity Restriction in the Elderly

American Journal of Physical Medicine & Rehabilitation ◽

10.1097/phm.0b013e31815e6e9b ◽

2008 ◽

Vol 87 (5) ◽

pp. 354-362 ◽

Cited By ~ 83

Author(s):

Nandini Deshpande ◽

E Jeffrey Metter ◽

Stefania Bandinelli ◽

Fulvio Lauretani ◽

B Gwen Windham ◽

...

Keyword(s):

Fear Of Falling ◽

The Elderly ◽

Activity Restriction

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Fear of Falling and Activity Restriction: The Survey of Activities and Fear of Falling in the Elderly (SAFE)

The Journals of Gerontology Series B ◽

10.1093/geronb/53b.1.p43 ◽

1998 ◽

Vol 53B (1) ◽

pp. P43-P50 ◽

Cited By ~ 303

Author(s):

M. E. Lachman ◽

J. Howland ◽

S. Tennstedt ◽

A. Jette ◽

S. Assmann ◽

...

Keyword(s):

Fear Of Falling ◽

The Elderly ◽

Activity Restriction

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Coactivation to Reduce Variability in the Elderly

Motor Control ◽

10.1123/mcj.2.4.314 ◽

1998 ◽

Vol 2 (4) ◽

pp. 314-330 ◽

Cited By ~ 82

Author(s):

Rachael D. Seidler-Dobrin ◽

jiping He ◽

George E. Stelmach

Keyword(s):

Muscle Activity ◽

Visual Target ◽

Model Simulation ◽

Elbow Flexion ◽

The Elderly ◽

Elderly Subjects ◽

Elderly Persons ◽

Movement Variability ◽

Burst Amplitude ◽

Young Subjects

The aim of this experiment was to determine whether elderly persons exhibit reciprocal phasing of muscle activity and scale EMG burst amplitude in the same manner as young people. Seven young and 7 elderly adults performed 30° elbow flexion movements at 800 ms duration to a visual target against varying inertial loads. The elderly were not able to achieve the required movement duration as frequently and spent a greater portion of the movement accelerating than the young. The young and the elderly subjects scaled EMG burst amplitude to the increasing loads in the same fashion, although the elderly subjects coactivated the agonisthtagonist muscles more than did the young subjects and thus did not accelerate the limb as rapidly. We hypothesized that the elderly used coactivation to reduce movement variability, and we developed a single-joint model with two muscles to examine this hypothesis. The model simulation correctly predicted the variability reduction due to coactivation. It appears, however, that this reduces the capability to accelerate rapidly.

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