Abstract
The Quadriceps angle (Q-angle) may be associated with the development of Running
Related Injuries (RRI). Only a few studies have investigated the association between
Q-angle, and the likelihood of RRI. These studies have not led to any firm conclusions,
on the link between Q-angle and development of RRI. To our knowledge, none of
these studies have taken mileage into account, which may be an import part of the
causal pathways leading to injury development.
PUR POSE : To investigate if mileage to RRI differs between novice runners with
different Q-angles.
MET HODS: Participants were recruited via an online questionnaire. Inclusion
criteria’s were, age 18-65, running must not have exceeded 10km in total the past year,
healthy individuals, consent to run at least two times pr. week over a 10 week period.
Q-angle was measured at baseline, using a standard goniometer, the participant lying
supine and the quadriceps relaxed. Participants were divided into three groups (Q-low
≤10°, Q-normal 10°-14°, Q-high ≥15°). All training data was collected by a GPS
watch, handed out at baseline. The data was uploaded to an online training journal,
accessible to the researchers. No guidelines were given to running intensity, time or
distance. The Kaplan-Meier method was used to estimate survival mileage until RRI in
each group. If a participant reported an injury, their survival mileage was eliminated,
they underwent examination and the RRI was diagnosed. To evaluate the outcome,
cox-regression model was used to calculate the Hazard Ratio (HR) between groups,
with Q-normal as the reference group.
RESU LTS : N = 60 included, 3 participants excluded, due to missing training data. N =
114 legs was analyzed, divided between 57 participants (n = 30 male, n = 27 female).
14 injured legs was reported, divided between 9 participants (Q-low ≤10° RRI = 7,
Q-normal 10°- 14° RRI = 5, Q-high ≥15° RRI = 2). HR for the Q-low ≤10° was (1.3,
CI 95% 0.4 - 4.4, pvalue 0.609), HR for the Q-high ≥15° was (0.6, CI 95% 0.1 - 3.2, pvalue
0.558).
CON CLUSION : Novice runners with Q-angles lower or higher than 10°-14°, don´t
have a statistical significant higher hazard rate of sustaining RRI, while running at
least, two times per week, over a 10 week period.
Related Injuries (RRI). Only a few studies have investigated the association between
Q-angle, and the likelihood of RRI. These studies have not led to any firm conclusions,
on the link between Q-angle and development of RRI. To our knowledge, none of
these studies have taken mileage into account, which may be an import part of the
causal pathways leading to injury development.
PUR POSE : To investigate if mileage to RRI differs between novice runners with
different Q-angles.
MET HODS: Participants were recruited via an online questionnaire. Inclusion
criteria’s were, age 18-65, running must not have exceeded 10km in total the past year,
healthy individuals, consent to run at least two times pr. week over a 10 week period.
Q-angle was measured at baseline, using a standard goniometer, the participant lying
supine and the quadriceps relaxed. Participants were divided into three groups (Q-low
≤10°, Q-normal 10°-14°, Q-high ≥15°). All training data was collected by a GPS
watch, handed out at baseline. The data was uploaded to an online training journal,
accessible to the researchers. No guidelines were given to running intensity, time or
distance. The Kaplan-Meier method was used to estimate survival mileage until RRI in
each group. If a participant reported an injury, their survival mileage was eliminated,
they underwent examination and the RRI was diagnosed. To evaluate the outcome,
cox-regression model was used to calculate the Hazard Ratio (HR) between groups,
with Q-normal as the reference group.
RESU LTS : N = 60 included, 3 participants excluded, due to missing training data. N =
114 legs was analyzed, divided between 57 participants (n = 30 male, n = 27 female).
14 injured legs was reported, divided between 9 participants (Q-low ≤10° RRI = 7,
Q-normal 10°- 14° RRI = 5, Q-high ≥15° RRI = 2). HR for the Q-low ≤10° was (1.3,
CI 95% 0.4 - 4.4, pvalue 0.609), HR for the Q-high ≥15° was (0.6, CI 95% 0.1 - 3.2, pvalue
0.558).
CON CLUSION : Novice runners with Q-angles lower or higher than 10°-14°, don´t
have a statistical significant higher hazard rate of sustaining RRI, while running at
least, two times per week, over a 10 week period.
| Original language | English |
|---|---|
| Publication date | 29 May 2012 |
| Number of pages | 1 |
| Publication status | Published - 29 May 2012 |
| Event | 3rd World Congress on Exercise is Medicine: American College of Sports Medicine - San Fransisco, United States Duration: 29 May 2012 → 2 Jun 2012 Conference number: 3 |
Conference
| Conference | 3rd World Congress on Exercise is Medicine |
|---|---|
| Number | 3 |
| Country/Territory | United States |
| City | San Fransisco |
| Period | 29/05/2012 → 02/06/2012 |