We examined the relationships between heights of different vertical jumps and isometric single-joint strength characteristics ankle, knee, hip, trunk joints in young male soccer players (n = 117). The highest peak torque rate development (RTD) outcomes were low to moderate correlation with jump (r 0.25–0.50). correlations generally higher for bilateral than unilateral jumps. Linear regression m...

To compare clinical measures of hip abductor strength and endurance individuals with patellofemoral pain more severe symptoms to those less symptoms. Cross-sectional. Laboratory. Sixty participants were divided three times into 2 groups according symptomatology criteria: functional capacity, frequency severity. Isometric evaluated using a hand-held dynamometer, maximum number repetitions holdin...

CONTEXT Contralateral muscular imbalances have been suggested to increase the risk of lower extremity injury. Previous groups have assessed strength of the quadriceps and hamstring muscle groups; however, no previous authors have compared bilateral hip-abductor muscular performance. OBJECTIVE To examine the strength and fatigability of the hip abductors in the dominant and nondominant legs. ...

Background: Greater sagittal plane energy absorption (EA) in the 100 ms immediatelyfollowing ground contact during landing likely results in greater anterior cruciate ligament(ACL) loading and is the result of the combined EA of the hip, knee, and ankle. Further,greater total EA has been associated with landing biomechanics that are purported toincrease ACL injury risk. Howe...

OBJECTIVES To determine the prevalence of myofascial trigger points (MTrPs) in the gluteus medius (GMe) and quadratus lumborum (QL) for subjects with patellofemoral pain (PFP), and to examine the relationship between MTrPs and force production of the GMe after treatment. DESIGN Randomized controlled trial. SETTING A physical therapy clinic. PARTICIPANTS Subjects (N=52; mean age ± SD, 30±1...

Introduction Physical activity is a proposed factor int the development of hip pathologies in male and female. The main objectives this study were to investigate influence gender on isometric muscle strength, range motion gluteus medius thickness at rest, during contraction onset activation. Material methods A cross-sectional was carried out. Hip motion, strength (B-Mode) activation (M-Mode) me...

The ability to develop muscle force rapidly may be a very important factor to prevent a fall and to perform other tasks of daily life. However, information is still lacking on the range of training-induced neuromuscular adaptations in elderly humans recovering from a period of disuse. Therefore, the present study examined the effect of three types of training regimes after unilateral prolonged ...

Objective- We assessed the effect of change in core isometric strength and endurance on upper limb isometric strength in female athletes. Methods- In this experimental study, 32 female athletes aged 18-25 years were recruited based on the inclusion criteria. (17 cases in the experimental group and 15 cases in the control group). Before and after the core stabilization knockdown protocol, parti...

Purpose: This study aimed to evaluate the symmetry of the isometric strength of the shoulder and scapulothoracic muscles in volleyball and futsal athletes. Methods: In this case-control study, the strength of the scapulothoracic muscles and rotation of the shoulders in 20 adult volleyball athletes and 20 futsal adult athletes, who were randomly selected from sports clubs around Tehran, were me...

The strength ratio between hamstrings and quadriceps (H/Q) is associated with knee injuries as well as hip abductor muscle (HAB) weakness. Sixteen resistance trained men (age, 32.5 ± 4.2 years) performed 5 s maximal isometric contractions at 75° of knee flexion/extension and 15° of hip abduction on a dynamometer. After this isometric test they performed a Farmer's walk exercise to find out if t...