View clinical trials related to Muscle Architecture.
Filter by:Sarcopenia characterised by loss of muscle mass, muscle strength and physical performance burdens many older adults since the condition is related to functional decline. Periods of inactivity such as during hospitalisation leads to further functional decline. It has been reported that the loss of muscle mass associated with sarcopenia not only entails a decrease in muscle mass but also changes in muscle architecture. Knowledge on changes in muscle architecture is essential since it is one of the most important determinants on muscle strength and thus physical performance. The main objective of this study is to investigate changes in muscle architecture and physical performance during acute hospitalisation and after discharge in older adults and subsequently the effectiveness of resistance training of the lower limb during acute hospitalisation. If successful, our study could have a great impact on the individual, as well as societal level, due to a better understanding of the factors related to sarcopenia and the prevention of functional decline as a result of hospitalisation.
Exercise is of great importance in the treatment of hypertension, which is expressed as a very serious disease, the prevalence of which is increasing day by day in the world and can cause many complications that are common in society. Exercise methods effective on carotid intima-media thickness, skeletal muscle architecture, and strength, which are important markers of hypertension-related organ damage, remain unclear. Strengthening exercises draw attention as an important approach in the control of hypertension. In order for strengthening exercises to be effective in the rehabilitation of hypertension, moderate and high-intensity exercises are recommended. New exercise approach strategies are gaining importance in order to enable resistance exercise training and to increase muscle mass and strength in the elderly who have a limitation for the recommended exercise intensity, in patients with hypertension, and in people with various diseases in which the cardiovascular system is affected. Whole body vibration (TVV) applications, which have no side effects reported as the current example of these exercise approaches, attract attention. Many positive effects occur on the cardiovascular system with the short-term and low-effort application of TVV exercise approaches, which are frequently used in routine rehabilitation practices. However, when the literature is examined, the effects of these exercise approaches on carotid intima-media thickness, which is one of the main markers of hypertension-related organ damage, are unclear. In addition, the effects of hypertension on quadriceps muscle architecture, which are expected to be adversely affected as a result of affecting autophagy regulation in skeletal muscle and causing decreased muscle capillarization, remain unclear. In addition, there is insufficient data on the effectiveness of strengthening exercises and TVV exercises on hemodynamic responses and quadriceps muscle strength in hypertensive patients. It will shed light on the determination of the exercise approach that is most effective on the muscle architecture, hemodynamic responses and carotid intima-media thickness of hypertensive patients and that can show these effects without overloading the cardiovascular system.
The aim of this study is to examine the effects of plyometric training on biceps femoris longus (BFl) and vastus lateralis (VL) muscle architecture in healthy football players. Individuals will be randomly placed into training and control groups. Measurements of muscle architecture will be taken bilaterally from BFl and VL muscles by means of an ultrasound device. Functional performance will be evaluated with the single leg jump test. Following the initial evaluations, individuals in the training group will receive plyometric training. Evaluations of muscle architecture and functional performance will be taken again from the individuals in the training and control groups at the end of the 4th and 8th weeks. The received ultrasound images will be calculated through the MicroDicom software. In-group and between-group comparisons will be analyzed using the Statistical Package for the Social Sciences program and appropriate tests.
Purpose: To explore the sports performance of the adolescent sprinters, including analyzing the correlations between the results and central nerve sensory, and also between motor control and various muscle mechanical characteristic and sport-related fitness factor.
Today, the most commonly used position is the seated position with 45° of shoulder abduction (Abd) in the scapular plane, known as the most functional isokinetic assessment of shoulder-rotator strength (1). However, considering the architectural feature of the rotator muscles, a position where the maximum sarcomere length is obtained, in which the maximum muscle strength is produced, has not been investigated. Ward et al. showed that the shoulder position, in which the sarcomere length of the muscles was between 2.0 - 2.6 µm, was 25⁰ Abd and 20⁰ external rotation (ER) as a result of their study on the rotator cuff muscles architecture (2). The test position selected in isokinetic measurements is the main factor for outcome measurements and the repeatability of the measurements directly depends on the selected position (3). This study was planned to investigate the effects of the position where the shoulder is at 25⁰ Abd and 20⁰ ER to develop the most suitable isokinetic strength evaluation position based on muscle architecture for shoulder rotator muscles.Using IsoMed 2000 device (D. & R. Ferstl GmbH, Hemau, Germany) we conducted the isokinetic test of concentric (CON) and eccentric (ECC) shoulder internal (IR) and external (ER) strength at the angular velocity of 60˚/s in both Method I (scapular position) and Method II (25⁰ Abd and 20⁰ ER). There were seven days between the testing sessions, and both tests were conducted at the same time of day. The same examiner with experience in performing isokinetic testing with IsoMed 2000 tested all subjects in both testing sessions