Abstract：
:The purpose of this article is to present how predictive machine learning methods can be utilized for detecting sport injury risk factors in a data-driven manner. The approach can be used for finding new hypotheses for risk factors and confirming the predictive power of previously recognized ones. We used three-dimensional motion analysis and physical data from 314 young basketball and floorball players (48.4% males, 15.72±1.79 yr, 173.34±9.14 cm, 64.65±10.4 kg). Both linear (L1-regularized logistic regression) and non-linear methods (random forest) were used to predict moderate and severe knee and ankle injuries (N=57) during three-year follow-up. Results were confirmed with permutation tests and predictive risk factors detected with Wilcoxon signed-rank-test (p<0.01). Random forest suggested twelve consistent injury predictors and logistic regression twenty. Ten of these were suggested in both models; sex, body mass index, hamstring flexibility, knee joint laxity, medial knee displacement, height, ankle plantar flexion at initial contact, leg press one-repetition max, and knee valgus at initial contact. Cross-validated areas under receiver operating characteristic curve were 0.65 (logistic regression) and 0.63 (random forest). The results highlight the difficulty of predicting future injuries, but also show that even with models having relatively low predictive power, certain predictive injury risk factors can be consistently detected.
journal_name
Int J Sports Medjournal_title
International journal of sports medicineauthors
Jauhiainen S,Kauppi JP,Leppänen M,Pasanen K,Parkkari J,Vasankari T,Kannus P,Äyrämö Sdoi
10.1055/a-1231-5304subject
Has Abstractpub_date
2020-09-13 00:00:00eissn
0172-4622issn
1439-3964pub_type
杂志文章abstract：:Little if any research has examined the variability in time to exhaustion (TTE) during submaximal treadmill running. This study investigated the test-retest reliability of submaximal treadmill TTE as a measure of endurance capacity. 16 endurance-trained males (n=14) and females (n=2) completed a run to exhaustion at 7...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0035-1555928
更新日期：2016-03-01 00:00:00
abstract：:The albuminuria occurring after swimming in splenectomized dogs was investigated. Swimming in splenectomized dogs induces metabolic acidosis, a decrease in renal vascular conductance, and an increase in plasma renin activity, all three factors possibly implicated in the occurrence of albuminuria. The administration of...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2008-1025922
更新日期：1984-12-01 00:00:00
abstract：:The hypothesis that blood biochemical measurements of iron (Fe), copper (Cu), magnesium (Mg) and zinc (Zn) nutritional status and dietary intakes of these minerals are useful predictors of 100-yd free-style swimming performance during actual competition was examined in five female and five male collegiate swimmers. Di...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-972891
更新日期：1996-10-01 00:00:00
abstract：:Intense exercise promotes long-term gains in cognitive functions. On the other hand, intense exercise may result in acute effects not clearly determined for cognitive performance. A condition of stochastic intensity ranging from moderate to maximal efforts is part of sports like cycling, in which cognitive integrity i...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/a-1114-6170
更新日期：2020-06-29 00:00:00
abstract：:Declines in exercise capacity throughout an individual's life span can affect function and can ultimately limit the ability to perform activities of daily living. Along with these changes in exercise capacity and function, studies have reported age-associated changes in several parameters of immune status including de...
journal_title：International journal of sports medicine
pub_type： 杂志文章,评审
doi：10.1055/s-2007-972697
更新日期：1997-03-01 00:00:00
abstract：:Cardiac magnetic resonance imaging was performed on 14 junior elite Olympic weight lifters and 14 controls (means +/- Se, age = 18.4 +/- 0.5 and 17.8 +/- 0.4 years, weight = 76.5 +/- 3.6 and 78.8 +/- 3.3 kg, % fat = 6.5% +/- 0.8% and 11.5% +/- 1.7%, respectively). Controls were individually matched to the lifters to w...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1024923
更新日期：1989-10-01 00:00:00
abstract：:Aortic elastic properties are important determinants of left ventricular function. The aim of this study was to determine left ventricular diastolic function and aortic distensibility in endurance athletes. Thirty male runners and thirty age-matched healthy male controls took part in the study. All subjects underwent ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2004-820956
更新日期：2005-04-01 00:00:00
abstract：:Rugby union is a sport involving high force and frequency impacts making the likelihood of injury a significant risk. The aim of this study was to measure and report the individual and group acute and cumulative physiological stress response during 3 professional rugby games through non-invasive sampling. 24 professio...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0034-1398528
更新日期：2015-06-01 00:00:00
abstract：:Vigorous and prolonged physical exercise and mechanical involvement of the perineal region might influence prostatic function and measurement of both total (PSA) and free prostate specific antigen (fPSA), decreasing the diagnostic efficiency of the laboratory screening for either benign or neoplastic prostate disorder...
journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章
doi：10.1055/s-2004-830450
更新日期：2005-01-01 00:00:00
abstract：:The reproducibility of performance in a laboratory test impacts on the statistical power of that test to detect changes of performance in experiments. The purpose of this study was to determine the reproducibility of performance of distance runners completing a 60 min time trial (TT) on a motor-driven treadmill. Eight...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-971879
更新日期：1998-01-01 00:00:00
abstract：:This study assessed the validity of a photoplethysmographic heart rate (HR) monitor, the Polar OH1 in various sports performed in ecological conditions: running, cycling, soccer, kayaking, walking, tennis and fitness. Seventy trained athletes (56 males, 14 females) wore the Polar OH1 armband and the H7 chest belt duri...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/a-0875-4033
更新日期：2019-07-01 00:00:00
abstract：:We tested the hypothesis that time course of O (2) uptake (VO (2)) measured during a supramaximal exercise performed in the field is driven to maximal oxygen uptake (VO (2max)). On an outdoor track, five middle-distance male runners first performed a test to determine VO (2max) and a supramaximal 800-m running test at...
journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章
doi：10.1055/s-2004-820998
更新日期：2005-05-01 00:00:00
abstract：:Controversy exists as to whether plasma volume (PV) expansion has the potential to increase maximal oxygen uptake (VO2max). In the present study, VO2max and exercise time to fatigue were measured in nine untrained men when plasma volume (PV) was normal and then again on the next day following two levels of PV expansio...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1024774
更新日期：1990-04-01 00:00:00
abstract：:The objectives of this study were to 1) continuously assess oxygen uptake during and after difficult sport rock climbing and 2) to evaluate the effects of active versus passive recovery on post-climbing blood lactate and hand grip strength. Fifteen expert rock climbers attempted to climb (i.e., red point lead) a 20 m ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2000-302
更新日期：2000-04-01 00:00:00
abstract：:The circulation of blood during upright exercise involves a two-pump system, a central cardiac pump and a peripheral pump responsible for systemic venous return. Axiomatically, the function of the two pumps must be equal, and certain evidence suggests that the peripheral pump may "drive" the circulation during exercis...
journal_title：International journal of sports medicine
pub_type： 杂志文章,评审
doi：10.1055/s-2001-18526
更新日期：2001-11-01 00:00:00
abstract：:This study compared rectal temperature (Tre), heat sensation and sweating between obese and non-obese boys during cycling in the heat. Participants (aged 12-15 years) were 17 obese and 16 non-obese (BMI=29.4±4.3 and 16.8±1.7 kg · m⁻², respectively) boys. They cycled for 30-min (50-55% VO(2peak)) in a climatic chamber ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0031-1301314
更新日期：2012-06-01 00:00:00
abstract：:Fluid-regulating hormones [arginine vasopressin (AVP) and aldosterone] as well as electrolytes, plasma volume (PV), and plasma proteins were studied in 16 well-trained male amateur runners (mean age 31.8 years) before t0), immediately after (t1), and 60 min (t2) and 22 h (t3) after a marathon run. Immediately after th...
journal_title：International journal of sports medicine
pub_type： 杂志文章,评审
doi：10.1055/s-2007-1024914
更新日期：1989-08-01 00:00:00
abstract：:The purpose of this study was to determine whether a post-exercise cryotherapy protocol could facilitate recovery of elbow flexor strength and reduce the severity of delayed onset muscle soreness following eccentric exercise. Eight resistance-trained males (23 +/- 3 yr) performed 64 eccentric elbow flexions with each ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-972686
更新日期：1997-11-01 00:00:00
abstract：:The aim of this study was to compare the effects of aerobic and mental training on cognitive function and to determine if the association of the two techniques shows better results. Thirty-two healthy elderly subjects (60 - 76 years) were assigned to one of four groups: aerobic training, mental training, combined aero...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2002-33735
更新日期：2002-08-01 00:00:00
abstract：:Six successful members of the British Women's Lightweight Rowing Team were assessed before and after two-month (1990) and four-month (1991) periods of weight-reduction controlled by reduced caloric intake, while engaged in their normal physical training. Fat free mass (FFM) was calculated from body weight (BW) by util...
journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章
doi：10.1055/s-2007-1021090
更新日期：1994-11-01 00:00:00
abstract：:This study compared physiological responses associated with exercise tolerance in girls (G) and women (W) of similar fitness and heat acclimatization level during exercise in a hot and humid outdoor environment (33.4 degrees C and 55.1 % RH; WBGT = 29.9 +/- 0.2 degrees C). Nine pre-menarcheal G (age = 11.3 yr) and nin...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2006-923863
更新日期：2006-12-01 00:00:00
abstract：:In young elite athletes the influence of a sensorimotor training (SMT = balance training) on strength, jump height and spinal reflex excitability was compared with adaptations induced by strength training (ST). Seventeen athletes were randomly assigned to either a SMT or a ST group. Before and after 6 weeks of trainin...
journal_title：International journal of sports medicine
pub_type： 杂志文章,随机对照试验
doi：10.1055/s-2007-964996
更新日期：2007-12-01 00:00:00
abstract：:The aims of this study were: to compare energy expenditure (EE) estimated from the existing GT3X accelerometer equations and EE measured with indirect calorimetry; to define new equations for EE estimation with the GT3X in youth, adults and older people; and to define GT3X vector magnitude (VM) cut points allowing to ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0033-1337945
更新日期：2013-11-01 00:00:00
abstract：:The aim of the present study was to investigate the relationship between maximal fat oxidation rate (MFO) measured during a progressive exercise test on a cycle ergometer and ultra-endurance performance. 61 male ironman athletes (age: 35±1 yrs. [23-47 yrs.], with a BMI of 23.6±0.3 kg/m2 [20.0-30.1 kg/m2], a body fat p...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0043-117178
更新日期：2017-11-01 00:00:00
abstract：:The purpose of the present study was to ascertain whether increase in step frequency at a given velocity during running reduces the lower extremity loading variables, which is associated with tibial stress fracture in runner. We hypothesized that the lower extremity loading variables at a given speed would be minimize...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0031-1291232
更新日期：2012-04-01 00:00:00
abstract：:The aim of this study was: i) to compute an energy balance of a slalom kayak competition by measuring the percentage contributions of the aerobic and anaerobic energy sources to total metabolic power (E(tot)); and ii) to compare these data with those obtained, on the same subjects, over a flat-water course covered at ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2005-865922
更新日期：2006-07-01 00:00:00
abstract：:Ulnar and posterior tibial motor nerve conduction velocity (NCV) was assessed in 91 athletes and nonathletes. The athletes included male weight lifters, swimmers, jumpers and male and female track sprinters and distance runners. NCV of the weight lifters was significantly faster than that of the other groups for both ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2008-1025876
更新日期：1984-02-01 00:00:00
abstract：:The alterations in thigh muscle properties of chondromalacia patellae patients during isometric and dynamic endurance tests were studied using a variokinetic knee testing system linked to surface EMG. A total of 41 patients (chondromalacia group) with arthroscopically certified chondromalacia of the patella were studi...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-972962
更新日期：1995-01-01 00:00:00
abstract：:Gait retraining is a method for management of patellofemoral pain, which is a common ailment among recreational runners. The present study investigated the effects of gait retraining from rearfoot strike to forefoot strike on running economy, heart rate, and respiratory exchange ratio immediately post-retraining and o...
journal_title：International journal of sports medicine
pub_type： 杂志文章,随机对照试验
doi：10.1055/s-0043-110225
更新日期：2017-12-01 00:00:00
abstract：:Blood pressure (BP) assessment during resistance exercise can be useful to avoid high BP, reducing cardiovascular risk, especially in hypertensive individuals. However, non-invasive accurate technique for this purpose is not available. The aim of this study was to compare finger photoplethysmographic (FPP) and intra-a...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-0030-1252054
更新日期：2010-08-01 00:00:00
