The relationships between muscular strength and vertical jumping performance were examined in young women (14-19 years) track and field jumpers (n = 20) and volleyball players (n = 21). The knee extensor muscular strength measured at 9 knee angles was correlated with jumping height and peak power at the squat (SJ) and the countermovement (CMJ) vertical jump tests. Pearson product coefficient of correlation was used to test the significance of these relationships (p = 0.05). The relationships were strong to moderate, but only in the volleyball players (p = 0.05 and power of analysis >0.80). Specifically, in the volleyball players, the strong relationships were noted for muscular strength at the knee angle range of 40 degrees to 90 degrees and CMJ jumping height as well as SJ peak power. Results indicate the dissimilarity in the relationships between the knee extensor muscular strength and jumping performance in the young female track and field jumpers and volleyball players. In addition, it appears that the measure selected to evaluate jumping performance alters the correlational results.
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http://dx.doi.org/10.1519/JSC.0b013e31816a406d | DOI Listing |
Background: Individuals with Mild Cognitive Impairment (MCI) are at greater risk of developing Alzheimer's disease (AD). Previous studies have shown that physical exercise is a protective factor against the clinical evolution of dementia in MCI. Lower muscle strength levels are associated with a greater risk of AD incidence.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Faculty of Sport Sciences, Sport and Health University Research Institute (iMUDS), University of Granada., Granada, Granada, Spain.
Background: Understanding the association of different fitness components with brain structure, and further, how possible fitness-related brain associations relate to executive function is important for developing public health strategies to improve the health and wellbeing of elderly adults worldwide. Thus, we aimed to investigate the association of cardiorespiratory fitness (CRF) and muscular strength measures with gray matter volume (GMV), and to study whether fitness-related regions of GMV are associated to executive function (EF) in cognitively normal older adults.
Methods: Ninety-one cognitively normal older adults (71.
Prog Rehabil Med
January 2025
Department of Rehabilitation Medicine, The Jikei University School of Medicine, Tokyo, Japan.
Objectives: Physical function assessments in patients with spinal muscular atrophy (SMA) are important indicators for assessing the effectiveness of treatment and changes over time in rehabilitation therapy. However, few reports exist on this indicator. This study calculated the minimal clinically important difference (MCID) for assessing motor function in the upper and lower limbs of individuals with SMA to estimate the degree of change within a functional score that is considered clinically meaningful.
View Article and Find Full Text PDFBrain Behav
January 2025
Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran.
Purpose: Essential tremor (ET) is a prevalent movement disorder, yet current therapeutic options remain limited. Emerging evidence implicates leucine-rich repeat and immunoglobulin-like domain-containing protein (Lingo-1) and neuroinflammation in the pathophysiology of ET. This study aimed to investigate whether agmatine, a biogenic amine neuromodulator attenuates tremors and modulates the expression of Lingo-1 and proinflammatory markers in a rodent model of ET.
View Article and Find Full Text PDFFront Neurol
December 2024
NextGen Precision Health, University of Missouri, Columbia, MO, United States.
In Periodic Paralysis (PP), a rare inherited condition caused by mutation in skeletal muscle ion channels, the phenotype changes with age, transitioning from the episodic attacks of weakness that give the condition its name, to a more degenerative phenotype of permanent progressive weakness and myopathy. This leads to disability and reduced quality of life. Neither the cause of this phenotype transition, nor why it occurs around the age of 40 is known.
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