The objective of this study was to study if the influence of limb dominance on kicking is affecte... more The objective of this study was to study if the influence of limb dominance on kicking is affected by a previous hamstring injury to either limb.
This study aimed to study the co-activation of hamstring-quadriceps muscles during submaximal str... more This study aimed to study the co-activation of hamstring-quadriceps muscles during submaximal strength exercises without the use of maximum voluntary isometric contraction testing and compare (i) the inter-limb differences in muscle activation, (ii) the intra-muscular group activation pattern, and (iii) the activation during different phases of the exercise. Muscle activation was recorded by surface electromyography of 19 elite male youth players. Participants performed five repetitions of the Bulgarian squat, lunge and the squat with an external load of 10 kg. Electrical activity was recorded for the rectus femoris, vastus medialis, vastus lateralis, biceps femoris and semitendinosus. No significant inter-limb differences were found (F1, 13=619; p=0.82; partial η2=0.045). Significant differences were found in the muscle activation between different muscles within the muscle group (quadriceps and hamstrings) for each of the exercises : Bulgarian squat (F1,18=331: p<0.001; partial...
Background Although the hamstring muscle group gets loaded during the kicking motion, the effect ... more Background Although the hamstring muscle group gets loaded during the kicking motion, the effect of a previous hamstring injury on the kicking skill has not been studied in detail. Objective To the study the effect of a previous hamstring injury on the kicking technique, and how gender and limb dominance influences the same. Design Observational study. Participants were required to kick the ball into a target 7 m away using a four step run-up. Five valid kicks were taken from the dominant and non-dominant limb each. Setting Laboratory conditions on FIFA approved artificial turf, with a three-dimensional Vicon motion capture system at 200Hz and a Kistler force platform at 1000Hz. with participants belonging to Spanish First (women) and Second (men) Division teams. Participants 45 professional soccer players (females=26, males=19) who belonged to clubs that had the same number of training sessions and matches per week. Main Outcome Measurements Ball velocities, kinematic and kinetic data for the hip and knee of the kicking leg in the sagittal plane, and the reaction forces for the ground and the support leg. 3-way ANOVA was used to compare the data. Results Previously injured female athletes had a lower peak hip velocity in the dominant limb kicks; and a smaller knee flexion angle, and a lower hip flexion velocity in the non-dominant limb kicks. Conclusions Kicking technique is affected by a previous hamstring injury in females especially in phases where the hamstring muscles are the most active. Differences in male soccer players were not seen. Thus these injuries must be treated differently in male and female soccer players, and whether the injury occurred in the dominant or non-dominant limb. An additional study with a greater number of previously injured athletes would be necessary to provide conclusive results.
1 The hamstring injury is one of the most common injuries occurring in soccer. The purpose of thi... more 1 The hamstring injury is one of the most common injuries occurring in soccer. The purpose of this study was to identify the effect of a previous hamstring injury and limb dominance on the kicking pattern of elite female soccer players. 14 players belonging to a top first division soccer team volunteered to take part in the study. They were asked about their injury history and leg dominance in a questionnaire, and they performed 5 instep soccer kicks with either limb into a target 7m away. The results showed that limb dominance had no effect on the kicking pattern in elite players. Significant differences were found in the maximum hip angular velocity while kicking with a previously injured limb as compared to a previously uninjured limb. This indicates that rehabilitation programs probably should treat the injury differently in female soccer players. INTRODUCTION: Epidemiological injury studies assessing these sports consistently rank hamstring strain injuries as one of the most pr...
The aim has been to review the literature about the risk factors of hamstring injury in soccer fr... more The aim has been to review the literature about the risk factors of hamstring injury in soccer from a biomechanical point of view. METHODOLOGY. Data bases of bibliography references were Medline, Scopus and SportDiscuss. RESULTS AND DISCUSSION. Many prospective studies have shown that the previous injury is the greatest risk factor of sustaining the injury. However the primary causes of the injury are unclear in soccer. A lack of hamstring flexibility has been one of the main injury risk factors with controversies on the results. Imbalance of isokinetic force is a risk factor but electrical coactivation of all muscles participating during knee flexion and extension are unknown in football. While the importance of lumbopelvic-hamstrings muscles synchronization during running seems to be crucial for understanding the risk of injury, no research has been developed in this topic in football. CONCLUSIONS. More research using new data recording procedures as Dynamic Scanners, Surface EMG,...
The objective of this study was to study if the influence of limb dominance on kicking is affecte... more The objective of this study was to study if the influence of limb dominance on kicking is affected by a previous hamstring injury to either limb.
This study aimed to study the co-activation of hamstring-quadriceps muscles during submaximal str... more This study aimed to study the co-activation of hamstring-quadriceps muscles during submaximal strength exercises without the use of maximum voluntary isometric contraction testing and compare (i) the inter-limb differences in muscle activation, (ii) the intra-muscular group activation pattern, and (iii) the activation during different phases of the exercise. Muscle activation was recorded by surface electromyography of 19 elite male youth players. Participants performed five repetitions of the Bulgarian squat, lunge and the squat with an external load of 10 kg. Electrical activity was recorded for the rectus femoris, vastus medialis, vastus lateralis, biceps femoris and semitendinosus. No significant inter-limb differences were found (F1, 13=619; p=0.82; partial η2=0.045). Significant differences were found in the muscle activation between different muscles within the muscle group (quadriceps and hamstrings) for each of the exercises : Bulgarian squat (F1,18=331: p<0.001; partial...
Background Although the hamstring muscle group gets loaded during the kicking motion, the effect ... more Background Although the hamstring muscle group gets loaded during the kicking motion, the effect of a previous hamstring injury on the kicking skill has not been studied in detail. Objective To the study the effect of a previous hamstring injury on the kicking technique, and how gender and limb dominance influences the same. Design Observational study. Participants were required to kick the ball into a target 7 m away using a four step run-up. Five valid kicks were taken from the dominant and non-dominant limb each. Setting Laboratory conditions on FIFA approved artificial turf, with a three-dimensional Vicon motion capture system at 200Hz and a Kistler force platform at 1000Hz. with participants belonging to Spanish First (women) and Second (men) Division teams. Participants 45 professional soccer players (females=26, males=19) who belonged to clubs that had the same number of training sessions and matches per week. Main Outcome Measurements Ball velocities, kinematic and kinetic data for the hip and knee of the kicking leg in the sagittal plane, and the reaction forces for the ground and the support leg. 3-way ANOVA was used to compare the data. Results Previously injured female athletes had a lower peak hip velocity in the dominant limb kicks; and a smaller knee flexion angle, and a lower hip flexion velocity in the non-dominant limb kicks. Conclusions Kicking technique is affected by a previous hamstring injury in females especially in phases where the hamstring muscles are the most active. Differences in male soccer players were not seen. Thus these injuries must be treated differently in male and female soccer players, and whether the injury occurred in the dominant or non-dominant limb. An additional study with a greater number of previously injured athletes would be necessary to provide conclusive results.
1 The hamstring injury is one of the most common injuries occurring in soccer. The purpose of thi... more 1 The hamstring injury is one of the most common injuries occurring in soccer. The purpose of this study was to identify the effect of a previous hamstring injury and limb dominance on the kicking pattern of elite female soccer players. 14 players belonging to a top first division soccer team volunteered to take part in the study. They were asked about their injury history and leg dominance in a questionnaire, and they performed 5 instep soccer kicks with either limb into a target 7m away. The results showed that limb dominance had no effect on the kicking pattern in elite players. Significant differences were found in the maximum hip angular velocity while kicking with a previously injured limb as compared to a previously uninjured limb. This indicates that rehabilitation programs probably should treat the injury differently in female soccer players. INTRODUCTION: Epidemiological injury studies assessing these sports consistently rank hamstring strain injuries as one of the most pr...
The aim has been to review the literature about the risk factors of hamstring injury in soccer fr... more The aim has been to review the literature about the risk factors of hamstring injury in soccer from a biomechanical point of view. METHODOLOGY. Data bases of bibliography references were Medline, Scopus and SportDiscuss. RESULTS AND DISCUSSION. Many prospective studies have shown that the previous injury is the greatest risk factor of sustaining the injury. However the primary causes of the injury are unclear in soccer. A lack of hamstring flexibility has been one of the main injury risk factors with controversies on the results. Imbalance of isokinetic force is a risk factor but electrical coactivation of all muscles participating during knee flexion and extension are unknown in football. While the importance of lumbopelvic-hamstrings muscles synchronization during running seems to be crucial for understanding the risk of injury, no research has been developed in this topic in football. CONCLUSIONS. More research using new data recording procedures as Dynamic Scanners, Surface EMG,...
Uploads