Effects of slightly-weighted shoe intervention on lower limb muscle mass and gait patterns in the elderly

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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PP050-SUN UPPER AND LOWER LIMB MUSCLE MASS IN PATIENTS UNDERGOING SURGERY FOR UPPER Gl CANCER

Clinical Nutrition Supplements ◽

10.1016/s1744-1161(11)70104-1 ◽

2011 ◽

Vol 6 (1) ◽

pp. 42

Author(s):

A.J. Macdonald ◽

M. Esposito ◽

C. Gray ◽

N.A. Stephens ◽

C. Greig ◽

...

Keyword(s):

Muscle Mass ◽

Lower Limb ◽

Lower Limb Muscle ◽

Limb Muscle

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Segmental bioelectrical impedance analysis of lower limb muscle mass in patients with COPD

10.1183/13993003.congress-2015.pa2214 ◽

2015 ◽

Author(s):

Deniz Dilaver ◽

Jane L. Canavan ◽

Djeya P. Kaliaraju ◽

Claire M. Nolan ◽

Sarah E. Jones ◽

...

Keyword(s):

Muscle Mass ◽

Lower Limb ◽

Bioelectrical Impedance Analysis ◽

Bioelectrical Impedance ◽

Impedance Analysis ◽

Lower Limb Muscle ◽

Limb Muscle ◽

Segmental Bioelectrical Impedance

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PP069-MON IMPACT OF CANCER-ASSOCIATED WEIGHT-LOSS ON LOWER LIMB MUSCLE MASS AND FUNCTION

Clinical Nutrition Supplements ◽

10.1016/s1744-1161(11)70361-1 ◽

2011 ◽

Vol 6 (1) ◽

pp. 141

Author(s):

N.A. Stephens ◽

C. Gray ◽

A.J. MacDonald ◽

B.H. Tan ◽

I.J. Gallagher ◽

...

Keyword(s):

Weight Loss ◽

Muscle Mass ◽

Lower Limb ◽

Lower Limb Muscle ◽

Limb Muscle ◽

And Function

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The effect of support surface and footwear condition on postural sway and lower limb muscle action of the old people

10.21203/rs.2.10274/v1 ◽

2019 ◽

Author(s):

Meizhen Huang ◽

Kit-lun Yick ◽

Sun-pui Ng ◽

Joanne Yip ◽

Roy Cheung

Keyword(s):

Lower Limb ◽

Postural Stability ◽

Muscle Activation ◽

Postural Sway ◽

The Elderly ◽

The Body ◽

Support Surface ◽

Lower Limb Muscle ◽

Limb Muscle ◽

Age Related

Abstract Background: Diminished somatosensory function and lower plantar cutaneous sensitivity have been identified as a critical age-related change, which is related to postural instability in the older population. Footwear is suggested that can modulate the postural stability by altering the interface between the foot sole and the ground. However, it is unclear whether this footwear effect could also influence lower limb muscle activation for the elderly. This study aimed to investigate the footwear insole texture and supporting surface condition on static postural stability and lower limb muscle activation for healthy older people. Methods: This is a single-session study with repeated measurements. Twenty-three healthy older female stood on the firm (i.e., concrete floor) and foam surfaces with their eyes open in the three footwear conditions, namely barefoot, plain shoes and nodulous insole shoes, for 30 seconds. Static postural sway and muscle activation of biceps femoris (BF), vastus lateralis (VL), tibialis anterior (TA), and lateral gastrocnemius (LG) of the dominant leg were measured during each testing condition. Results: compared to firm surface, standing on the foam could significantly increase the body sway and lower limb muscle activation (p<0.05); compared to barefoot, when standing on the foam, wearing footwear significantly decreased the VL and TA muscle activation and minimize the postural sway in ML and AP direction, while the influence is larger for the nodulous shoes compared to the plain shoes. A positive correlation was observed between the lower limb muscle activation and AP (r=0.327-0.389, p<0.001) and total sway path length (r=0.317-0.427, p<0.001). Conclusions: footwear could improve the postural stability and decease the fall risk comparing to barefoot when the somatosensory input is in disturbance, while the improvement is larger when wearing nodulous insole footwear for the elderly.

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Relationship between strength and muscle mass in middle-aged and elderly women: a cross-sectional study

Revista Brasileira de Geriatria e Gerontologia ◽

10.1590/1981-22562017020.170021 ◽

2017 ◽

Vol 20 (5) ◽

pp. 660-669 ◽

Cited By ~ 1

Author(s):

Carine Fernandes de Souza ◽

Mariana Carmem Apolinário Vieira ◽

Rafaela Andrade do Nascimento ◽

Mayle Andrade Moreira ◽

Saionara Maria Aires da Câmara ◽

...

Keyword(s):

Skeletal Muscle ◽

Muscle Mass ◽

Lower Limb ◽

Skeletal Muscle Mass ◽

Elderly Women ◽

Handgrip Strength ◽

Lower Limb Muscle ◽

Limb Muscle ◽

Middle Aged ◽

Cross Sectional

Abstract Objective: to analyze the relationship between handgrip strength and lower limb strength and the amount of segmental skeletal muscle mass in middle-aged and elderly women. Methods: an observational, cross-sectional, observational study of 540 women aged between 40 and 80 years in the cities of Parnamirim and Santa Cruz, Rio Grande do Norte, was performed. Sociodemographic data, anthropometric measurements, handgrip dynamometry, knee flexors and extensors of the dominant limbs, as well as the segmental muscle mass of the limbs were evaluated. Data were analyzed using Student's t-Test, Chi-square test, Effect Size and Pearson's Correlation (CI 95%). Results: there were statistically significant weak and moderate correlations between handgrip strength and upper limb muscle mass, knee flexion strength and lower limb muscle mass, and between knee extension strength and lower limb muscle mass for the age groups 40-59 years and 60 years or more (p<0.05). Conclusions: muscle strength correlates with skeletal muscle mass. It could therefore be an indicator of the decrease in strength. It is not the only such indicator, however, as correlations were weak and moderate, which suggests the need for more studies on this theme to elucidate which components may also influence the loss of strength with aging.

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