THE EFFECT OF MUSCLE STRENGTH AND AEROBIC FUNCTION IN THE ELDERLY ACCORDING TO EXERCISE LOAD PATTERN USING INDOOR SMALL CYCLING SYSTEM

2018 ◽  
Vol 18 (08) ◽  
pp. 1840040
Author(s):  
SEUNG-ROK KANG ◽  
YOUNG-CHOON LEE ◽  
CHUL-UN HONG ◽  
CHANG HO YU ◽  
TAE-KYU KWON
Keyword(s):  
Oxygen Consumption ◽  
Muscle Strength ◽  
Muscular Activity ◽  
The Elderly ◽  
Gas Analysis ◽  
Lower Limbs ◽  
Trunk Muscles ◽  
Exercise Load ◽  
Cycle System ◽  
Aerobic Function

We were investigating the muscle strength and aerobic function effect on the aged according to active and passive load using compact cycle system. We recruited twenty old participants and they performed shoulder rotating, upper cycling and lower cycling exercise. We measured the muscular activity, respiratory gas analysis and body heat. The result of muscular activity showed that the passive load could cause muscular activity at 15.4–65.9% compared to active load. We thought that the passive exercise could provide the prevention of spasticity and maintain effect of remaining muscle function in the elderly by caused muscular activity over 50%. The result of oxygen consumption showed that it is the active exercise that used the bigger oxygen consumption at 42.4% during lower cycling. We thought that the active exercise used the big muscles of lower limbs including trunk muscles during lower cycling. The result of body temperature showed that it rises with increase in oxygen consumption and heart rate, and it increased the bigger for lower cycling. The foundation of this study could apply to fundamental research for developing exercise load of indoor rehabilitation exercise system with convenience and easy use to the elderly.

scholarly journals Fatigue Detection during Sit-To-Stand Test Based on Surface Electromyography and Acceleration: A Case Study

Sensors ◽  
2019 ◽  
Vol 19 (19) ◽  
pp. 4202 ◽  
Author(s):  
Roldán Jiménez ◽  
Bennett ◽  
Ortiz García ◽  
Cuesta Vargas
Keyword(s):  
Surface Electromyography ◽  
Detection System ◽  
Muscular Activity ◽  
Relative Energy ◽  
Lower Limbs ◽  
Trunk Muscles ◽  
Discrete Wavelet ◽  
Sit To Stand ◽  
Emg Signal

The latest studies of the 30-second sit-to-stand (30-STS) test aim to describe it by employing kinematic variables, muscular activity, or fatigue through electromyography (EMG) instead of a number of repetitions. The aim of the present study was to develop a detection system based on acceleration measured using a smartphone to analyze fatigue during the 30-STS test with surface electromyography as the criterion. This case study was carried out on one woman, who performed eight trials. EMG data from the lower limbs and trunk muscles, as well as trunk acceleration were recorded. Both signals from eight trials were preprocessed, being averaged and temporarily aligned. The EMG signal was processed, calculating the spectral centroid (SC) by Discrete Fourier Transform, while the acceleration signal was processed by Discrete Wavelet Transform to calculate its energy percentage. Regarding EMG, fatigue in the vastus medialis of the quadriceps appeared as a decrease in SC, with a descending slope of 12% at second 12, indicating fatigue. However, acceleration analysis showed an increase in the percentage of relative energy, acting like fatigue firing at second 19. This assessed fatigue according to two variables of a different nature. The results will help clinicians to obtain information about fatigue using an accessible and inexpensive device, i.e., as a smartphone.

scholarly journals Motor Function of Children with SMA1 and SMA2 Depends on the Neck and Trunk Muscle Strength, Deformation of the Spine, and the Range of Motion in the Limb Joints

2021 ◽  
Vol 18 (17) ◽  
pp. 9134
Author(s):  
Agnieszka Stępień ◽  
Ewa Gajewska ◽  
Witold Rekowski
Keyword(s):  
Muscle Strength ◽  
Range Of Motion ◽  
Motor Function ◽  
Motor Skills ◽  
Trunk Muscle ◽  
Lower Limbs ◽  
Trunk Muscles ◽  
Functional Relationships ◽  
Trunk Muscle Strength ◽  
Significant Relationships

The purpose of this study was to investigate the functional relationships between selected ranges of motion of the neck, upper and lower limbs, the strength of the neck and trunk muscles, postural parameters, and the motor function of children with SMA1 and SMA2—27 children, aged 6 months-15 years, with genetically confirmed spinal muscular atrophy type 1 (19 children) and 2 (8 children) undergoing pharmacological treatment. All children were examined, according to the methodology, including the motor function evaluation, measurement of selected ranges of motion, assessment of postural parameters, and measurement of neck and trunk muscle strength. The functional status of 15 children was assessed with the CHOP INTEND (CHOP group) scale and of 12 children with the HFMSE (HFMSE group). The results obtained showed that, in children examined with the CHOP scale, greater limitation of flexion in the shoulder joints was observed. As the deformation of the chest increased, the functional abilities of children deteriorated. In participants examined with the CHOP group, the ranges of neck rotation decreased with the increase of the chest deformity. In the HFMSE group, the ranges of head rotation showed a strong relationship with some parameters of muscle strength and the sum of the R coefficients. Participants showed many significant relationships between the range of motion in the neck and joints of the limbs, with more significant relationships in the CHOP group. The following conclusions were made: motor skills of children with SMA depend on muscle strength, range of motion, and deformities of the spine and chest; the development of scoliosis adversely affects the motor function, ranges of motion, and muscle strength; and movement ranges are related to motor skills and strength values.

scholarly journals A Systematic Review of the Effectiveness of Tai Chi Exercises for Improving Balance and Lower Limb Muscle Strength of the Elderly in the Community

2021 ◽  
Vol 9 (T5) ◽  
pp. 6-12
Author(s):  
Kadek Dio Agus Bagiartana ◽  
Titih Huriah
Keyword(s):  
Systematic Review ◽  
Muscle Strength ◽  
Lower Limb ◽  
Tai Chi ◽  
The Elderly ◽  
Lower Limbs ◽  
Health Concern ◽  
Research Articles ◽  
Breathing Exercises ◽  
Lower Limb Muscles

BACKGROUND: Balance disorders are the primary cause of falls, a significant health concern for the elderly. Tai Chi (TC) improves the balance and strength of the lower limb muscles that focus on centering the mind, bodywork, and breathing exercises. AIM: A systematic review was conducted to search for evidence of the effects of Thai Chi in balancing and strengthening of lower extremities among the elderly in the community. METHODS: According to the preferred reporting items for systematic reviews and meta-analyses guidelines, a systematic review was conducted. Databases included Science Direct, ProQuest, and PubMed, from 2015 to 2020, with research articles being original studies. The quality of research articles was assessed using the Physiotherapy Evidence Database scale. Systematically analyses were used for results syntheses. RESULTS: Six articles were included in this review. TC exercises effectively improve the balance and muscle strength of the lower limbs among the elderly in the community. TC has a beneficial effect on evaluation in the short (8 weeks) and long (12 weeks) term to prevent falls among the elderly in the community. CONCLUSION: TC exercises are beneficial for improving balance and muscle strength of the lower limb among the elderly in the community with Selected TC, Traditional TC, and Modified Chen-style TC.

scholarly journals BIOMECHANICAL COMPARISON OF MUSCLE USE PATTERNS OF YOUNG ADULTS AND OLDER ADULTS IN FLOOR AND BED TRANSFER MOVEMENTS

2020 ◽  
Vol 20 (09) ◽  
pp. 2040020
Author(s):  
MINJOO KIM ◽  
SEUNGYONG OH ◽  
KYONG KIM ◽  
TAEKYU KWON ◽  
CHULUN HONG
Keyword(s):  
Muscle Strength ◽  
Well Being ◽  
The Elderly ◽  
Lower Limbs ◽  
Daily Lives ◽  
Improve Design ◽  
Lower Limb Muscles ◽  
Design Function ◽  
Near Term ◽  
Biomechanical Comparison

In this study, lift chair was developed to reduce safety accidents in the daily lives of elderly people with reduced muscle strength as the importance of health and well-being of the elderly was emphasized by the increase in the elderly population. In addition, muscle strength characteristics of the elderly and those in their 20s were compared and analyzed when using lift chair. The lift chair used are chairs that can be raised and lowered and designed to reach the floor in full descent. The EMG was measured to compare the near-term use of lift chair to those in their 20s. As a result, the elderly had higher use of lower limb muscles compared to young participants. It was judged that the upper and lower extremities were difficult to move due to the characteristics of the elderly with reduced muscle strength, and that the upper and lower limbs were used simultaneously to complete the movement. The results showed the characteristics of everyday motion of the elderly for the development of lift chair and can help improve design, function, etc. in later development of lift chair.

scholarly journals COVID-19 era in long-term cardiac rehabilitation programs: how was muscle strenght and lean mass affected in cardiovascular patients?

2021 ◽  
Vol 28 (Supplement_1) ◽  
Author(s):  
M Borges ◽  
M Lemos Pires ◽  
R Pinto ◽  
G De Sa ◽  
I Ricardo ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Cardiac Rehabilitation ◽  
Lean Mass ◽  
Lower Limb ◽  
Lower Limbs ◽  
Phase Iii ◽  
Face To Face ◽  
Home Based ◽  
Lower Limb Strength

Abstract Funding Acknowledgements Type of funding sources: None. Introduction Exercise prescription is one of the main components of phase III Cardiac Rehabilitation (CR) programs due to its documented prognostic benefits. It has been well established that, when added to aerobic training, resistance training (RT) leads to greater improvements in peripheral muscle strength and muscle mass in patients with cardiovascular disease (CVD). With COVID-19, most centre-based CR programs had to be suspended and CR patients had to readjust their RT program to a home-based model where weight training was more difficult to perform. How COVID-19 Era impacted lean mass and muscle strength in trained CVD patients who were attending long-term CR programs has yet to be discussed. Purpose To assess upper and lower limb muscle strength and lean mass in CVD patients who had their centre-based CR program suspended due to COVID-19 and compare it with previous assessments. Methods 87 CVD patients (mean age 62.9 ± 9.1, 82.8% male), before COVID-19, were attending a phase III centre-based CR program 3x/week and were evaluated annually. After 7 months of suspension, 57.5% (n = 50) patients returned to the face-to-face CR program. Despite all constraints caused by COVID-19, body composition and muscle strength of 35 participants (mean age 64.7 ± 7.9, 88.6% male) were assessed. We compared this assessment with previous years and established three assessment time points: M1) one year before COVID-19 (2018); M2) last assessment before COVID-19 (2019); M3) the assessment 7 months after CR program suspension (last trimester of 2020). Upper limbs strength was measured using a JAMAR dynamometer, 30 second chair stand test (number of repetitions – reps) was used to measure lower limbs strength and dual energy x-ray absorptiometry was used to measure upper and lower limbs lean mass. Repeated measures ANOVA were used. Results Intention to treat analysis showed that upper and lower limbs lean mass did not change from M1 to M2 but decreased significantly from M2 to M3 (arms lean mass in M2: 5.68 ± 1.00kg vs M3: 5.52 ± 1.06kg, p = 0.004; legs lean mass in M2: 17.40 ± 2.46kg vs M3: 16.77 ± 2.61kg, p = 0.040). Lower limb strength also decreased significantly from M2 to M3 (M2: 23.31 ± 5.76 reps vs M3: 21.11 ± 5.31 reps, p = 0.014) after remaining stable in the year prior to COVID-19. Upper limb strength improved significantly from M1 to M2 (M1: 39.00 ± 8.64kg vs M2: 40.53 ± 8.77kg, p = 0.034) but did not change significantly from M2 to M3 (M2 vs M3: 41.29 ± 9.13kg, p = 0.517). Conclusion After CR centre-based suspension due to COVID-19, we observed a decrease in upper and lower limbs lean mass and lower limb strength in previously trained CVD patients. These results should emphasize the need to promote all efforts to maintain physical activity and RT through alternative effective home-based CR programs when face-to-face models are not available or possible to be implemented.

Relationship between trunk muscle strength and trunk muscle mass and thickness using bioelectrical impedance analysis and ultrasound imaging

2021 ◽  
pp. 1-10
Author(s):  
Ryo Miyachi ◽  
Nana Koike ◽  
Suzu Kodama ◽  
Junya Miyazaki
Keyword(s):  
Muscle Strength ◽  
Muscle Mass ◽  
Ultrasound Imaging ◽  
Bioelectrical Impedance Analysis ◽  
Muscle Thickness ◽  
Bioelectrical Impedance ◽  
Impedance Analysis ◽  
Trunk Muscle ◽  
Trunk Muscles ◽  
Trunk Muscle Strength

BACKGROUND: Although trunk muscles are involved in many important functions, evaluating trunk muscle strength is not an easy task. If trunk muscle mass and thickness could be used as indicators of trunk muscle strength, the burden of measurement would be reduced, but the relationship between trunk muscle strength and trunk muscle mass and thickness has not been clarified. OBJECTIVE: The purpose of this study was to clarify the relationship between trunk muscle strength and trunk muscle mass by bioelectrical impedance analysis and trunk muscle thickness by ultrasound imaging in healthy adults. METHODS: One hundred and twenty-one healthy university students were included in this study. Trunk flexion/extension muscle strength and trunk muscle mass by bioelectrical impedance analysis, and trunk muscle thickness by ultrasound imaging were measured. RESULTS: Both trunk flexion strength and trunk extension strength were significantly correlated with trunk muscle mass and oblique and rectus abdominis muscle thickness. Multiple regression analysis showed that trunk extension muscle strength had an independent relationship with trunk muscle mass. CONCLUSIONS: This study demonstrated that trunk muscle mass or trunk muscle thickness can be used as an alternative means for evaluating trunk muscle strength, making the evaluation of trunk muscles less burdensome.

scholarly journals POS0016 THE EVALUATION OF FUNCTIONAL ABILITIES OF PATIENTS WITH OSTEOPOROTIC VERTEBRAL FRACTURES AS A BASIS FOR REHABILITATION PROGRAMS DEVELOPING

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 209.2-210
Author(s):  
L. Marchenkova ◽  
V. Vasileva ◽  
M. Eryomushkin
Keyword(s):  
Muscle Strength ◽  
Vertebral Fractures ◽  
Trunk Muscles ◽  
Control Group ◽  
Study Group ◽  
Primary Osteoporosis ◽  
X Rays ◽  
Functional Abilities ◽  
Rehabilitation Programs ◽  
Osteoporotic Vertebral Fractures

Background:Due to the demand for special rehabilitation programs for patients with osteoporotic vertebral fractures (VFs), it is of interest to study the functional abilities of those patients. The scientific hypothesis suggests that osteoporotic VFs would cause muscle weakness, muscle dysfunction and conditional disturbances.Objectives:to estimate muscle strength, motor function and coordination disorders in patients with VFs in the setting of systemic osteoporosis as a basis for rehabilitation programs developing.Methods:120 patients aged 43−80 with primary osteoporosis were enrolled. Study group comprised of 60 subjects (56 women, 4 men) with at least 1 VF confirmed by X-rays. Control group included 60 subjects (56 women, 4 men) with osteoporosis but without any osteoporotic fracture. The examination program included back muscles tenzodynamometry, balance tests and stabilometry.Results:Muscle strength deficiency was estimated in study group in trunk flexors (TF) — 40.9% and in trunk extensors (TE) — 18.1% with an adequate function of the left lateral flexors (LLF) and in right lateral flexors (RLF). Patients with VFs had the lower muscle strength vs controls of TE (15.64±9.8 vs 27.73±9.9 kg, p=0.00002), TF (14.61±8.98 vs 21.28±8.38 kg, p=0.0006), LLF (13.10±7.2 vs 24.06±8.9 kg, p=0.005) and RLF 13.44±7.43 vs 24.26±7.65 kg, p=0.0003). Patients with VFs lose their balance faster during one-leg-standing test with open eyes (5.0 [1.0; 10.0] vs 7.5 [5.0; 10.5] sec in control group, p=0.03) and with closed eyes (2.0 [0; 3.0] vs 3.5 [3.0; 5.0] sec, p=0.04). Fukuda-Unterberger test showed greater side dislocation in study group — 40° [25; 45] vs controls 30° [10; 45], (p=0.02). According to stabilometry study group was characterized vs control group by lower balance coefficient with open eyes (77.2±7.6 vs 85.7±9.4%, p=0.002) and with closed eyes (67.1±9.8 vs 73.4±9.9%, p=0.03), greater sagittal displacement (6.8 [2.1; 37.7] vs 4.8 [1.8; 10.7] mm, p=0.025) and deviation in the saggital plane (1.2 [-1.07; 1.5] vs -1.2 [-1.5; 1.2] mm, p=0.01), and also less pressure center velocity (9.51±4.4 vs 7.1±2.7 mm/sec, р=0.009).Conclusion:Osteoporotic VFs are associated with reduction of trunk muscles strength and negatively affect static and dynamic balance function that should be taken into account when developing rehabilitation programs for these patients.Disclosure of Interests:None declared.

The Oxygen Consumption of an Echiuroid, Bonellia Viridis Rolando

1968 ◽  
Vol 48 (2) ◽  
pp. 427-434
Author(s):  
A. E. BRAFIELD
Keyword(s):  
Oxygen Consumption ◽  
Body Size ◽  
Continuous Flow ◽  
Muscular Activity ◽  
Dry Weight ◽  
The Body ◽  
Body Region ◽  
Rate Of Oxygen Consumption

1. The oxygen consumption of the echiuroid Bonellia viridis has been investigated by means of a continuous-flow polarographic respirometer. 2. The general rate of oxygen consumption per unit dry weight is similar to that characteristic of polychaetes, and declines exponentially with increasing body size. 3. The rate of oxygen consumption rises in the light and falls again if darkness is restored. 4. The oxygen consumption of the isolated proboscis plus that of the isolated body region corresponds closely to that of the entire animal. 5. The oxygen consumption per unit dry weight of the proboscis is considerably higher than that of the body region. 6. The oxygen consumption of an isolated body region increases in the presence of light, but that of an isolated proboscis does not. 7. These findings are discussed in relation to the biology of the animal, observed muscular activity, and the occurrence of the pigment bonellin.

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