scholarly journals The Therapress 1600i: Accelerating Knee Rehabilitation

2009 ◽  
Vol 3 (2) ◽  
Author(s):  
A. Geronimo ◽  
M. Holyoak ◽  
M. Oliver ◽  
E. Scherm ◽  
M. Paliwal
Keyword(s):  
Physical Therapy ◽  
Strength Training ◽  
Vastus Lateralis ◽  
Continuous Variable ◽  
Quadriceps Strength ◽  
Emg Activity ◽  
Time Data ◽  
Variable Resistance ◽  
The Subject ◽  
Knee Disorders

Objective: To design a ‘smart’ leg press machine that improves upon current rehabilitative practices for degenerative knee disorders such as osteoarthritis as well as injury induced knee pathologies. As its design entails, the machine provides rehabilitative assistance through strength training of upper leg muscles, with focus on the vastus medialis and vastus lateralis of the quadriceps group. The Therapress is designed to further improve the rate and quality of joint rehabilitation. The TP1600i is unique to current physical therapy practices because it incorporates three documented and proven strategies to combat quadriceps weakness: strength training, electrotherapy, and biofeedback [1,2]. The machine is designed to aid the user in regaining lost quadriceps strength, a condition indicative of poor knee health [3]. The machine incorporates a novel package of biofeedback, automated continuous variable resistance, and progress assessment, while maintaining subject specificity. The Therapress system utilizes a LabVIEW interface, which acquires and processes physiological signals recorded from the subject, as well as serves as a controller for output. These signals include surface electromyography (EMG) of the quadriceps, reaction forces at the foot (an indirect measurement of exercise resistance), and knee range of motion (ROM). Additionally, the subject is outfitted with stimulatory electrodes which function to characterize muscle recruitment using the Central Activation Ratio (CAR), as well as to therapeutically excite the muscle and induce accelerated hypertrophy [4]. Automated continuous variable resistance is achieved through a resistive hydraulic cylinder, which utilizes a servo motor to change the orifice size of partially overlapping valves during and between exercise sets. The resistance is adjusted based on user input of exertion and pain levels into the LabVIEW interface. The footplate of the machine houses four force sensing units to measure the resistance offered by the cylinder. A biofeedback arm attached to the system provides the subject with real-time data of their performance, including integrated EMG activity, ROM, and force production. Inclusion of biofeedback in quadriceps exercise regimens has been shown to increase strength gain [2]. The design allows the user to be in control of the exercise intensity at all times, while the machine works to maximize the efficacy of the protocol. The TP1600i is designed as a cost effective and time efficient alternative for the rehabilitation of debilitating knee disorders in a physical therapy protocol, and its ease of operation may qualify it for home use as well.

scholarly journals Gene expression changes in vastus lateralis muscle after different strength training regimes during rehabilitation following anterior cruciate ligament reconstruction

PLoS ONE ◽  
2021 ◽  
Vol 16 (10) ◽  
pp. e0258635
Author(s):  
Birgit Friedmann-Bette ◽  
Holger Lornsen ◽  
Mario Parstorfer ◽  
Thomas Gwechenberger ◽  
Francesca Profit ◽  
...  
Keyword(s):  
Strength Training ◽  
Ligament Reconstruction ◽  
Muscle Wasting ◽  
Vastus Lateralis ◽  
Cruciate Ligament ◽  
Quadriceps Strength ◽  
Vastus Lateralis Muscle ◽  
Cruciate Ligament Reconstruction ◽  
Lateralis Muscle ◽  
Anterior Cruciate

Impaired muscle regeneration has repeatedly been described after anterior cruciate ligament reconstruction (ACL-R). The results of recent studies provided some evidence for negative alterations in knee extensor muscles after ACL-R causing persisting strength deficits in spite of the regain of muscle mass. Accordingly, we observed that 12 weeks of concentric/eccentric quadriceps strength training with eccentric overload (CON/ECC+) induced a significantly greater hypertrophy of the atrophied quadriceps muscle after ACL-R than conventional concentric/eccentric quadriceps strength training (CON/ECC). However, strength deficits persisted and there was an unexpected increase in the proportion of slow type I fibers instead of the expected shift towards a faster muscle phenotype after CON/ECC+. In order to shed further light on muscle recovery after ACL-R, the steady-state levels of 84 marker mRNAs were analyzed in biopsies obtained from the vastus lateralis muscle of 31 subjects before and after 12 weeks of CON/ECC+ (n = 18) or CON/ECC strength training (n = 13) during rehabilitation after ACL-R using a custom RT2 Profiler PCR array. Significant (p < 0.05) changes were detected in the expression of 26 mRNAs, several of them involved in muscle wasting/atrophy. A different pattern with regard to the strength training mode was observed for 16 mRNAs, indicating an enhanced hypertrophic stimulus, mechanical sensing or fast contractility after CON/ECC+. The effects of the type of autograft (quadriceps, QUAD, n = 19, or semitendinosus tendon, SEMI, n = 12) were reflected in the lower expression of 6 mRNAs involved in skeletal muscle hypertrophy or contractility in QUAD. In conclusion, the greater hypertrophic stimulus and mechanical stress induced by CON/ECC+ and a beginning shift towards a faster muscle phenotype after CON/ECC+ might be indicated by significant gene expression changes as well as still ongoing muscle wasting processes and a negative impact of QUAD autograft.

scholarly journals Implementation of a Strength Training Program for a 5-Year-Old Child With Poor Body Awareness and Developmental Coordination Disorder

2007 ◽  
Vol 87 (4) ◽  
pp. 455-467 ◽  
Author(s):  
Linda B Kaufman ◽  
Denise L Schilling
Keyword(s):  
Physical Therapy ◽  
Muscle Strength ◽  
Strength Training ◽  
Training Program ◽  
Motor Function ◽  
Developmental Coordination Disorder ◽  
Poor Performance ◽  
Body Awareness ◽  
Position Sense ◽  
Coordination Disorder

Background and Purpose This case report describes how a strength (muscle force-generating capacity) training program was associated with changes in muscle strength, motor function, and proprioceptive position sense in a young child with poor body awareness and a diagnosis of developmental coordination disorder. Case Description Assessment of a prekindergarten child referred for physical therapy because of behaviors compatible with poor body awareness revealed muscle weakness, poor performance on the Bruininks-Oseretsky Test of Motor Proficiency, and poor proprioception. Physical therapy testing done when the child was 5 years of age contributed to a pediatrician-assigned diagnosis of developmental coordination disorder. A 12-week strength training program was initiated. Outcomes Improvements were noted in muscle strength, gross motor function, and proprioception. Discussion Research indicates that muscles provide information about joint position. Evidence suggests that muscle strength gains seen in children are the result of neuromuscular learning and neural adaptations; therefore, a structured strength training program may have contributed to proprioceptive changes in this child.

scholarly journals Electrical Stimulation Frequency and Skeletal Muscle Characteristics: Effects on Force and Fatigue

2017 ◽  
Vol 27 (4) ◽  
Author(s):  
Maria Vromans ◽  
Pouran Faghri
Keyword(s):  
Electrical Stimulation ◽  
Vastus Lateralis ◽  
Voluntary Contraction ◽  
Current Intensity ◽  
Muscle Size ◽  
Emg Activity ◽  
Abductor Pollicis Brevis ◽  
Fiber Composition ◽  
Initial Drop ◽  
Initial Force

This investigation aimed to determine the force and muscle surface electromyography (EMG) responses to different frequencies of electrical stimulation (ES) in two groups of muscles with different size and fiber composition (fast- and slow-twitch fiber proportions) during a fatigue-inducing protocol. Progression towards fatigue was evaluated in the abductor pollicis brevis (APB) and vastus lateralis (VL) when activated by ES at three frequencies (10, 35, and 50Hz). Ten healthy adults (mean age: 23.2 ± 3.0 years) were recruited; participants signed an IRB approved consent form prior to participation. Protocols were developed to 1) identify initial ES current intensity required to generate the 25% maximal voluntary contraction (MVC) at each ES frequency and 2) evaluate changes in force and EMG activity during ES-induced contraction at each frequency while progressing towards fatigue. For both muscles, stimulation at 10Hz required higher current intensity of ES to generate the initial force. There was a significant decline in force in response to ES-induced fatigue for all frequencies and for both muscles (p<0.05). However, the EMG response was not consistent between muscles. During the progression towards fatigue, the APB displayed an initial drop in force followed by an increase in EMG activity and the VL displayed a decrease in EMG activity for all frequencies. Overall, it appeared that there were some significant interactions between muscle size and fiber composition during progression towards fatigue for different ES frequencies. It could be postulated that muscle characteristics (size and fiber composition) should be considered when evaluating progression towards fatigue as EMG and force responses are not consistent between muscles.

scholarly journals Vitamin and mineral supplementation effect on muscular activity and cycling efficiency in master athletes

2010 ◽  
Vol 35 (3) ◽  
pp. 251-260 ◽  
Author(s):  
Julien Louis ◽  
Christophe Hausswirth ◽  
François Bieuzen ◽  
Jeanick Brisswalter
Keyword(s):  
Slow Component ◽  
Vastus Lateralis ◽  
Muscular Activity ◽  
Knee Extensors ◽  
Emg Activity ◽  
Master Athletes ◽  
Double Blind ◽  
Mineral Complex ◽  
Cycling Efficiency ◽  
Fatiguing Exercise

The influence of vitamin and mineral complex supplementation on muscular activity and cycling efficiency was examined in elderly endurance-trained master athletes during a heavy cycling trial. Master athletes were randomly assigned in a double-blind process to 1 of 2 treatment groups: antioxidant supplementation (n = 8: As group) or placebo (n = 8: Pl group) for 21 days. After that time, each subject had to perform a 10-min session of cycling on a cycloergometer at a heavy constant intensity. Twenty-four to 48 h after this session, subjects performed an isometric maximal voluntary contraction before and immediately after a fatiguing strength training (leg press exercise) and the same 10-min cycling test after fatigue. Isometric maximal voluntary force (MVF) of knee extensors was assessed before and after fatigue. Electromyographic (EMG) activity of the vastus medialis, the vastus lateralis (VL), and the biceps femoris was recorded with surface EMG. The knee-extensors MVF after the fatiguing exercise was reduced in similar proportions for both groups (As, –10.9%; Pl, –11.3%, p < 0.05). This MVF loss was associated with a significant reduction in EMG frequency parameters for both groups, with a lower decrease for the As group. Muscular activity and cycling efficiency during the cycling bouts were affected by the treatment. Cycling efficiency decreased significantly and the oxygen uptake slow component was higher after the fatiguing exercise for both groups. Furthermore, a decrease in cycling efficiency was associated with an increase in VL activity. However, these changes were significantly lower for the As group. The results of the present study indicate an overall positive effect of vitamin and mineral complex supplementation on cycling efficiency after fatigue, in the endurance-trained elderly.

scholarly journals TRENDS IN DATA WAREHOUSING TECHNIQUES

2021 ◽  
Author(s):  
Naveen Kunnathuvalappil Hariharan
Keyword(s):  
Relational Databases ◽  
Financial Data ◽  
Relational Model ◽  
Time Data ◽  
Short Period ◽  
The Subject ◽  
Processing And Storage ◽  
And Storage ◽  
Long Term Trend

Financial data volumes are increasing, and this appears to be a long-term trend, implying that data managementdevelopment will be crucial over the next few decades. Because financial data is sometimes real-time data, itis constantly generated, resulting in a massive amount of financial data produced in a short period of time.The volume, diversity, and velocity of Big Financial Data are highlighting the significant limitations oftraditional Data Warehouses (DWs). Their rigid relational model, high scalability costs, and sometimesinefficient performance pave the way for new methods and technologies. The majority of the technologiesused in background processing and storage research were previously the subject of research in their earlystages. The Apache Foundation and Google are the two most important initiatives. For dealing with largefinancial data, three techniques outperform relational databases and traditional ETL processing: NoSQL andNewSQL storage, and MapReduce processing.

scholarly journals EFEITO DO TREINAMENTO RESISTIDO NA REDUÇÃO DA DOR NO TRATAMENTO DE MULHERES COM FIBROMIALGIA: REVISÃO SISTEMÁTICA

2018 ◽  
Vol 26 (2) ◽  
pp. 170
Author(s):  
Lidiane Cristina Correia ◽  
Bartolomeu Fagundes de Lima Filho ◽  
Fabieli Pereira Fontes ◽  
Larissa Ramalho Dantas Varella ◽  
Jamilson Simoes Brasileiro
Keyword(s):  
Physical Therapy ◽  
Strength Training ◽  
Physical Therapy Modalities

A fibromialgia (FM) é uma doença reumática, de etiologia desconhecida que apresenta como principal característica a dor musculoesquelética, desencadeando um ciclo de descondicionamento. A fisioterapia exerce um papel muito importante com os programas de exercícios físicos, compostos por alongamento, exercício aeróbio e exercício resistido para reverter os sintomas apresentados. Recentemente, estudos têm apontado para o fato de que os exercícios resistidos poderiam ocasionar uma redução da dor em pacientes com FM, gerando um novo questionamento sobre os efeitos do exercício resistido nestes pacientes. Com isso, este estudo teve o objetivo de investigar o efeito do treinamento resistido na redução dor em mulheres com fibromialgia. Para tanto, foi realizado uma revisão de forma sistematizada dos estudos publicados até maio de 2016 nas bases de dados eletrônicas PubMed, PEDro, Scielo e Lilacs. O levantamento dos estudos encontrados foi realizado no período de maio a junho de 2016, usando os seguintes descritores na língua inglesa: Physical Therapy Modalities, strength training, Pain, Fibromyalgia e seus equivalentes na língua portuguesa e espanhola. Após a busca, foram encontrados 85 artigos. Após a análise dos resumos, 80 artigos foram excluídos de acordo com os critérios pré-estabelecidos, restando apenas 5 estudos randomizados controlados, sendo selecionados para análise dos seus dados. Após a análise, conclui-se que o treinamento resistido reduz a dor em mulheres com fibromialgia, a partir da 8ª semana de treinamento, desde que esse seja realizado de forma continuada e orientada, com duração de no mínimo 30 minutos, com frequência de 2 a 3 vezes por semana.

scholarly journals Knowledge of continent women on physiotherapy as a treatment of urinary incontinence

2018 ◽  
Vol 6 (8) ◽  
pp. 153-166
Author(s):  
ENILDA MARTA CARNEIRO DE LIMA MELLO ◽  
HANNA HELLEN FERNANDES MEDEIROS ◽  
NIKELLY YORANNE DE AQUINO DE MATOS
Keyword(s):  
Urinary Incontinence ◽  
Physical Therapy ◽  
Quantitative Study ◽  
Health Professionals ◽  
Age Groups ◽  
Cross Sectional ◽  
Physical Therapy Treatment ◽  
The Subject ◽  
Information Providers ◽  
Therapy Treatment

Objective: To identify the knowledge about physiotherapy as a treatment of urinary incontinence in continent women. Methods: The study was characterized by a cross-sectional and quantitative study. A ten items questionnaire, created by the researchers, was used with related questions about women's health. The sample consisted of 60 continents women, aged between 20-90 years, divided into age groups, accommodating ten participants in each age delimitation as follows: 20-29, 30-39, 40-49, 50-59, 60-69, 70-90. Results: The results showed that 65% of the women did not know about the physiotherapeutic treatment for UI, 28.33% had heard and 6.67% knew about it. The channels of knowledge selected by the volunteers who claimed to know or hear about physiotherapy in the UI were 18.18% media, 31.82% were people known, 45.45% were health professionals, and 4.55% were other unna/med forms. It was also found that women aged between 60 and 90 years have more knowledge on the subject (15%) than those aged 20 to 39 (5%) and 40 to 59 years (0%). Conclusion: It is concluded, therefore, that continents women need more information regarding physical therapy treatment for urinary incontinence. In addition, this awareness should occur in a multidisciplinary way to cover a greater number of women and information providers, in view of the search for treatment early avoid greater complications.

PASSENGER RESPONSE TIME DATA- SETS FOR LARGE PASSENGER FERRIES AND CRUISE SHIPS DERIVED FROM SEA TRIALS

2021 ◽  
Vol 155 (A2) ◽  
Author(s):  
R Brown ◽  
E R Galea ◽  
S Deere ◽  
L Filippidis
Keyword(s):  
Response Time ◽  
Research Group ◽  
Data Sets ◽  
Time Data ◽  
Evacuation Time ◽  
The Public ◽  
Cruise Ships ◽  
Passenger Ships ◽  
Unique Nature ◽  
The Subject

The paper consists of 27 figures; numerous equations and 12 notes/ references, many of which are written by the authors of this paper. Whilst this may indicate a lack of “reading around the subject” it also indicates the unique nature of the topic and that little exists at present in the public domain about this topic. Indeed the authors and the research group they represent are the main contributors to the IMOs discussions and circulars on this subject. Given that background the paper is very detailed and consists of comparisons between the evacuation times of 3 passenger ships, 2 being Ro-Pax vessels and 1 a cruise liner. On board evacuation time statistics have been gathered from significant populations enabling the authors to draw significant conclusions relating to evacuation times in the presented scenarios. The paper is therefore a useful addition to the debates on this subject which is of major relevance to the understanding of evacuation times in passenger vessels. Data and research in this area is difficult to obtain thus the authors should be congratulated for their work.

Relationship Between Speed of Performing Leg Extension With 30 RM Load and the Selected EMG Variables of Selected Quadricep Muscles

2021 ◽  
Vol 10 (1) ◽  
pp. 61-76
Author(s):  
Dhananjoy Shaw ◽  
Deepak Singh ◽  
Umesh Kumar Ahlawat ◽  
Manvinder Kaur ◽  
Dinesh Bhatia
Keyword(s):  
Significant Relationship ◽  
Rank Order ◽  
Vastus Lateralis ◽  
Emg Activity ◽  
Median Frequency ◽  
Healthy Male ◽  
Leg Extension ◽  
Integrated Emg ◽  
Male Subjects ◽  
New Criteria

The aim of the study was to assess the effects of speed of leg extension exercise with 30 RM load on the EMG activity of Vastus Medialis (VM) and Vastus Lateralis (VL). Seventeen healthy male subjects performed 30 repetition of leg extension exercise with 30 RM load in minimum time possible and EMG activity from VM and VL of right lower extremity was recorded simultaneously. Two new criteria, namely gross load speed of movement (GLSM) and relative load speed of movement (RLSM) were developed as the variables of speed of exercise. Selected variables of EMG activity were median frequency (MDF), mean frequency (MNF), root mean square (RMS), and integrated EMG (IEMG). Product moment and rank order correlation were calculated between the selected variables of EMG activity and selected variables of speed of exercise. The selected EMG variables, namely MDF and MNF, reported a negative significant relationship (p<0.05) with selected variables of speed of exercise whereas a selected EMG variables, namely RMS reported a positive significant relationship (p<0.05) with selected with the selected variables of speed of exercise.

Sign in / Sign up

Export Citation Format

Share Document