Biomedical subjects

Roald Bahr

Publications and source records attributed to Roald Bahr.

39 records · Page 3Linked to original sources

PubMedDate not supplied

Risk factors for injuries in football.

BACKGROUND: The injury risk in football is high, but little is known about causes of injury. PURPOSE: To identify risk factors for football injuries using a multivariate model. STUDY DESIGN: Prospective cohort study. METHODS: Participants were 306 male football players from the two highest divisions in Iceland. Before the 1999 football season started, the following factors were examined: height, weight, body composition, flexibility, leg extension power, jump height, peak O(2) uptake, joint stability, and history of previous injury. Injuries and player exposure were recorded throughout the competitive season. RESULTS: Older players were at higher risk of injury in general (odds ratio [OR] = 1.1 per year, P = 0.05). For hamstring strains, the significant risk factors were age (OR = 1.4 [1 year], P < 0.001) and previous hamstring strains (OR = 11.6, P <0.001). For groin strains, the predictor risk factors were previous groin strains (OR = 7.3, P = 0.001) and decreased range of motion in hip abduction (OR = 0.9 [1 degrees ], P = 0.05). Previous injury was also identified as a risk factor for knee (OR = 4.6) and ankle sprains (OR = 5.3). CONCLUSIONS: Age and previous injury were identified as the main risk factors for injury among elite football players from Iceland.

Adolescent↗

PubMedDate not supplied

Rule violations as a cause of injuries in male norwegian professional football: are the referees doing their job?

BACKGROUND: Foul play is an important cause of injury in football. Reduction of foul play and adherence to the laws of the game may be possible interventions to reduce the rate of injuries. PURPOSE: To evaluate how violations of the laws of the game contribute to injury and to investigate whether the decisions made by the referees are correct in high-risk situations. STUDY DESIGN: Prospective cohort study. METHODS: Videotapes and injury information were collected for 174 of 182 matches from the male Norwegian professional league during the 2000 season. Three Norwegian FIFA referees performed retrospective blinded evaluation of the 406 incidents. RESULTS: Less than one-third of the injuries identified on video and about 40% of the incidents with a high risk of injury resulted in a free kick being awarded. About 1 in 10 of these situations led to either a yellow or red card. The agreement between decisions made by the match referee and the expert referee panel was good, that is, their decisions agreed in 85% of the situations in which injury occurred. CONCLUSIONS: There may be a need for an improvement of the laws of the game of football to protect players from dangerous play.

Athletic Injuries↗

PubMedDate not supplied

Video analysis of the mechanisms for ankle injuries in football.

BACKGROUND: Although ankle sprains are frequent in football, little is known about their mechanisms. PURPOSE: To describe the injury mechanisms for ankle injuries in male elite football. STUDY DESIGN: Prospective cohort study. METHODS: Videotapes and injury information were collected for 313 of 409 matches from Norwegian and Icelandic elite football during the 1999 to 2000 seasons. Video recordings of incidents that resulted in ankle injuries were analyzed and cross-referenced with injury reports from the team medical staff. RESULTS: A total 46 acute ankle injuries were reported to have occurred, that is, 4.5 injuries per 1000 match hours. Of these, 26 (57%) were identified on the videotapes. Two mechanisms thought to be specific to football were found: 1) player-to-player contact with impact by an opponent on the medial aspect of the leg just before or at foot strike, resulting in a laterally directed force causing the player to land with the ankle in a vulnerable, inverted position; and 2) forced plantar flexion where the injured player hit the opponent's foot when attempting to shoot or clear the ball. CONCLUSIONS: Systematic video analysis provides detailed information on the mechanisms for ankle injuries in football-for lateral ligament sprains and for the condition dubbed "footballer's ankle."

Adult↗