The Effect of Isometric Exercise Position on the Effectiveness of Isolated Work of the Thigh Flexor Muscles Based on the Results of the sEMG Study.

Backgroud: The main function of the hamstring muscles is to bend the knee joint and support the function of the hip extensors. Their frequent injuries are the result of overload related to, among others, dynamic running or jumping, and inadequate preparation for athletics activities. The asymmetry of the work of individual flexor muscle groups is clearly marked in the case of valgus or varus of the knee joint, i.

Lower limb injuries in american football players in Poland.

Background: The aim of the study was to determine the location and types of injuries in the lower limbs in American football players in Poland. The circumstances of the injuries were identified, with particular emphasis on the player's position on the field.

Methods: Original questionnaire to investigate 70 consecutive Polish players was used.

Relationship between the hip range of motion and functional motor system movement patterns in football players.

Background: The aim of this study was to determine the hip range of motion and the movement patterns of football players assessed with an aid of a Functional Motor Systems test, and to find an association between these parameters and the risk for hip joint injury.

Methods: The study included 50 men aged between 16 and 20 years: 25 footballers and 25 age- and body mass index-matched controls. The hip ranges of motion (flexion, extension, internal and external rotation, adduction and abduction) were determined, and the movement patterns were evaluated with the tests from the Functional Motor Systems battery.

Causes and differentiation of injuries depending on the positions taken on the pitch among American Football players in Poland.

Background: American Football (AF) players are assigned to positions by specific abilities and responsible for different tasks on the field; this may result into wide differentiation in experienced injuries. The aim of this study was to analyze the causes of injuries and their differentiation depending on the position on the pitch.

Methods: Original questionnaire was used to investigate 150 Polish amateur AF players who had suffered from 189 injuries.

Disbalance and fatigue of the spinal extensors as one of the causes of the overload disease of the lumbar spine.

Purpose: The aim of the study was to find out whether among young active people - the future healthcare professionals - there is a risk of developing lumbar spine overload disease depending on the occurrence of the disbalance of paravertebral muscles and to assess the fatigue of the examined muscles depending on the body position during the work.

Methods: The study involved 50 randomly selected students of physiotherapy and emergency medical services of a mean age of 21 years. The surface electromyography (sEMG) was used to measure the activity level of spinal extensors of the cervical and lumbar spine.

Activity and Quality of Life after Total Hip Arthroplasty.

Background: Coxarthrosis is a chronic musculoskeletal condition that causes severe pain and considerable limi-tation of the patient's motor performance. Total hip arthroplasty is one of the most common and effective methods used in the treatment of advanced degenerative changes. The aim of the present study was to evaluate the activity and quality of life of patients after unilateral total hip arthroplasty.

Comparison of Two Different Modes of Active Recovery on Muscles Performance after Fatiguing Exercise in Mountain Canoeist and Football Players.

Background: The aim of this study is to assess if the application of different methods of active recovery (working the same or different muscle groups from those which were active during fatiguing exercise) results in significant differences in muscle performance and if the efficiency of the active recovery method is dependent upon the specific sport activity (training loads).

Design: A parallel group non-blinded trial with repeated measurements.

Methods: Thirteen mountain canoeists and twelve football players participated in this study.