Publications by authors named "Marzouq K Almutairi"
Background: The countermovement jump (CMJ) is a reliable and valid test of lower-extremity (LE) muscle power and neuromuscular performance. Body mass is positively associated with CMJ performance in young adults, warranting the examination of the influence of body composition on jump height (JH). This study examined the mediation effects of body composition on CMJ performance in young adults.
View Article and Find Full Text PDFOur cross-sectional study aimed to investigate joint specificity of concentric muscle torque enhancement after a maximum eccentric contraction for the knee versus ankle joints across two different movement velocities (120°/s and 180°/s). After a familiarization session, 22 healthy young adults randomly performed concentric (CONC) and maximum eccentric preloaded concentric (EccCONC) muscle strength tests of the knee extensors and ankle plantar flexors of the non-dominant leg on an isokinetic strength testing device. We calculated the ratio between EccCONC and CONC (EccCONC/CONC) for all the conditions as the marker of concentric muscle torque enhancement.
View Article and Find Full Text PDFObjectives: The primary aim is to compare the effects of backward walking exercise to forward walking exercise on knee pain, knee functions, and thigh muscle strength in individuals with mild to moderate knee osteoarthritis using lower body positive pressure, in addition to mobility functions, balance, and self-reported health status.
Methods: The study is a single blind randomized clinical trial with two independent groups. This study will enroll 26 participants with mild to moderate knee osteoarthritis.
Background: Lower body positive pressure (LBPP) may provide a novel intervention for gait training in neurological conditions. Nonetheless, studies investigating the safety and feasibility of LBPP in patients with stroke are insufficient.
Objectives: The purpose of this study was to evaluate the safety and feasibility of LBPP as a rehabilitation intervention for individuals with chronic stroke.
Article Synopsis
- The countermovement jump (CMJ) is a reliable test for measuring lower extremity muscle power, but may not be suitable for early injury rehabilitation; functional muscle strength tests (FMSTs) could be better alternatives.
- This study hypothesized that three FMSTs (lateral step-up test, 5 times sit to stand, and 30-second chair stand test) could predict CMJ jump height and peak power in young adults.
- Results indicated that the 30CST was a significant predictor of both jump height and power, making it a useful and accessible tool for assessing and tracking progress in lower extremity rehabilitation.
Background: Joint specific stretch-shortening cycle (SSC) potentiation of lower extremity joints at propulsion onset during jump test performance (JTP) can temporally affect SSC potentiation. However, joint-specific SSC potentiation at propulsion onset during JTP is unknown.
Methods: Twenty-two healthy young adults, 12 men and 10 women, performed: vertical jumps (1) with a preliminary countermovement (CMJ), 2) from a squat position held isometrically for 2-3 seconds at the same knee angle of CMJ (SJ), and (3) after landing from a 15 cm high platform (DJ).