Sports medicine international open最新文献_第8页

Inter-Individual Variability in The Joint Negative Work During Running. 跑步过程中联合负功的个体间变异性。

Sports medicine international open Pub Date : 2018-11-23 DOI: 10.1055/a-0669-0885

Satoru Hashizume, Hiroaki Hobara, Yoshiyuki Kobayashi, Mitsunori Tada, Masaaki Mochimaru

{"title":"Inter-Individual Variability in The Joint Negative Work During Running.","authors":"Satoru Hashizume, Hiroaki Hobara, Yoshiyuki Kobayashi, Mitsunori Tada, Masaaki Mochimaru","doi":"10.1055/a-0669-0885","DOIUrl":"10.1055/a-0669-0885","url":null,"abstract":"The inter-individual variability of running technique is an important factor affecting the negative work of lower extremity joints that leads to muscle damage. Our study examines the relationships between the negative work of the lower extremity joints and the associated mechanical parameters that account for inter-individual variability in the negative work. Twenty-four young male adults were asked to run on a runway at a speed of 3.0 m·s -1 . Multiple linear regression analysis was conducted to examine the relationships between the negative work and the associated mechanical parameters for each lower extremity joint. With regards to the results, 76.3% of inter-individual variability in the negative work of the hip joint was accounted for by inter-individual variabilities in the corresponding moment (25.4%) and duration (50.9%). For the knee joint, the inter-individual variabilities in the moment (40.6%), angular velocity (24.5%), and duration (23.8%) accounted for 88.9% of inter-individual variability in the negative work. The inter-individual variability in the moment of the ankle joint alone accounted for 89.3% of the inter-individual variability in the corresponding negative work. These results suggest that runners can change the negative work by adapting their running techniques to influence the relevant mechanical parameter values; however, major parameters corresponding to the change in the negative work are not the same among the lower extremity joints.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"2 5","pages":"E157-E162"},"PeriodicalIF":0.0,"publicationDate":"2018-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-0669-0885","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36773111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Lumbar Spine Injuries: Primary Prevention in Amateur and Professional Golf Players. 腰椎损伤:业余和职业高尔夫球手的初级预防。

Sports medicine international open Pub Date : 2018-11-16 eCollection Date: 2018-11-01 DOI: 10.1055/a-0748-5443

Dietmar Goebel, Frank Drollinger, Andrea Drollinger

{"title":"Lumbar Spine Injuries: Primary Prevention in Amateur and Professional Golf Players.","authors":"Dietmar Goebel, Frank Drollinger, Andrea Drollinger","doi":"10.1055/a-0748-5443","DOIUrl":"https://doi.org/10.1055/a-0748-5443","url":null,"abstract":"In the sport of golf, there is no standard teaching method or swing technique even though golf is known for overuse injuries. This prospective study was to analyze classic swing kinematics in comparison with the Free-Release ® method and to define a physiological golf swing. Two hundred eighty-three players, age 50-59 years, were included in the study. For both swing techniques, examination addressed swing visualization, center of pressure (COP), center of mass (COM), as well as pelvic movement in relationship to different standing widths. The position of the spine was evaluated in the frontal and lateral planes. Using the classic technique, no golfer was able to describe his swing parameters, which would be necessary for visualization and to tolerate physiological range of movement, whereas players using the Free-Release method ® were able to provide such a description. COP and COM showed pathological swing mechanics for the classic technique, whereas for the Free-Release method mechanics were physiological. We conclude that to prevent lumbar spine injury, the classic swinging technique, which is characterized by lateral shear forces, static and dynamic pelvic side bending while rotating with high force against the spine, and an unbalanced COM and COP, should be substituted by the Free-Release technique as a new physiological guideline.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"2 6","pages":"E179-E184"},"PeriodicalIF":0.0,"publicationDate":"2018-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-0748-5443","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36773007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Explosive Resistance Training Using Elastic Bands in Young Female Team Handball Players. 用松紧带训练年轻女子手球队员的爆发力。

Sports medicine international open Pub Date : 2018-11-15 eCollection Date: 2018-11-01 DOI: 10.1055/a-0755-7398

Vidar Andersen, Marius Steiro Fimland, Kristoffer Toldnes Cumming, Øyvind Vraalsen, Atle Hole Saeterbakken

{"title":"Explosive Resistance Training Using Elastic Bands in Young Female Team Handball Players.","authors":"Vidar Andersen, Marius Steiro Fimland, Kristoffer Toldnes Cumming, Øyvind Vraalsen, Atle Hole Saeterbakken","doi":"10.1055/a-0755-7398","DOIUrl":"https://doi.org/10.1055/a-0755-7398","url":null,"abstract":"The aim of the study was to examine the effects of full-body elastic resistance band training in young female team handball players. 12 players (16.5±0.7 years, 166±5.0 cm, 65.9±8.8 kg) completed an 11-week control period followed by a 9-week elastic resistance band training period. The training program, consisting of 6 exercises, was incorporated into the teams' regular handball training sessions 3 times per week. Each exercise was performed with 3 sets of 6-10 explosive repetitions (5-9 on the Borg CR10 Scale®). The maximal power output in squat and bench press, jump height, throwing velocity and repeated agility run was tested before and after the control and training periods. The elastic resistance band period had greater improvement vs. the control period for countermovement jump with or without arm swing (10% vs. -6 to -2%) and power output at lighter loads (10 to 12% vs. -6 to 0%). For the 3 throwing velocity tests, there were tendencies towards increased velocity in the elastic resistance band period compared to the control period ( p =0.07-0.10). For the repeated agility run, there was a reduction in the mean and fastest time compared to the training period (2 to 3% vs. -1 to 1%). In conclusion, a brief, elastic resistance band training program, incorporated into the regular handball training sessions, improved explosive lower-limb performance in young female handball players more than handball training alone.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"2 6","pages":"E171-E178"},"PeriodicalIF":0.0,"publicationDate":"2018-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-0755-7398","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36773113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 18

Unilateral Conditioning Contractions Enhance Power Output in Elite Short Track Speed Skaters. 单侧条件收缩增强短道速滑运动员的力量输出。

Sports medicine international open Pub Date : 2018-11-15 eCollection Date: 2018-11-01 DOI: 10.1055/a-0770-4699

Philippe Gimenez, Evelyne Chicoine, David Amarantini, Fabien Dal Maso, Jonathan Tremblay

{"title":"Unilateral Conditioning Contractions Enhance Power Output in Elite Short Track Speed Skaters.","authors":"Philippe Gimenez, Evelyne Chicoine, David Amarantini, Fabien Dal Maso, Jonathan Tremblay","doi":"10.1055/a-0770-4699","DOIUrl":"https://doi.org/10.1055/a-0770-4699","url":null,"abstract":"The objective of the present study was to assess the effect of unilateral lower-body-conditioning muscle contractions during multiple sets of fatiguing repeated jumps in elite athletes. Five elite short-track speed-skating athletes performed 9 sets of 6 maximal consecutive jumps on 2 separate occasions: with (COND) and without (CTRL) preliminary voluntary conditioning contractions (CC) 5 min before the beginning of the sets. The CC consisted of 2 consecutive 3 s maximal unilateral isometric squats against a fixed bar, resulting in a 6 s overall isometric contraction per leg. For each set, power output (PO) was measured using a linear position transducer and averaged over the 6 corresponding repeated jumps. The results showed that PO was significantly greater during the test in COND than in CTRL ( p <0.01). PO significantly decreased with sets, by 19.4±4.7 and 15.2±7.6% ( p <0.001) between the first and last set in COND and CTRL, respectively. A 2×3 s maximal unilateral isometric CC, performed 5 min before unloaded repeated jumps, significantly increased mean PO. These results suggest that unilateral conditioning contractions can enhance performance in subsequent bilateral repeated jumps.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"2 6","pages":"E185-E190"},"PeriodicalIF":0.0,"publicationDate":"2018-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-0770-4699","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36773008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Acute Effect of Active and Passive Static Stretching on Elastic Modulus of the Hamstrings. 主动和被动静态拉伸对腘绳肌弹性模量的急性影响。

Sports medicine international open Pub Date : 2018-11-15 eCollection Date: 2018-11-01 DOI: 10.1055/a-0733-6957

Gakuto Nakao, Keigo Taniguchi, Masaki Katayose

{"title":"Acute Effect of Active and Passive Static Stretching on Elastic Modulus of the Hamstrings.","authors":"Gakuto Nakao, Keigo Taniguchi, Masaki Katayose","doi":"10.1055/a-0733-6957","DOIUrl":"https://doi.org/10.1055/a-0733-6957","url":null,"abstract":"The purpose of this study was to investigate differences in the acute effects of passive knee extension (PKE) and active knee extension (AKE) stretching on the shear elastic modulus of the hamstrings. In 20 healthy men, maximum knee extension (maximum range of motion [ROM]) and shear elastic modulus of the hamstrings (biceps femoris long head, semitendinosus, semimembranosus) were measured before (Pre) and after (Post) AKE and PKE stretching. The maximum ROM during stretching was measured. In both stretching methods, maximum ROM increased and the shear elastic modulus decreased (p<0.01), but no difference was found between the procedures. No significant difference was observed in the maximum ROM during stretching between the procedures (p=0.06). The shear elastic modulus was significantly lower in the biceps femoris long head and semimembranosus than in the semitendinosus muscle (p<0.05). Static stretching with PKE and AKE stretching showed an increase in maximum ROM and a decrease in hamstring elasticity, but no difference was found between the methods. Both stretching protocols were effective for reducing elasticity of the biceps femoris long head and semimembranosus.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"2 6","pages":"E163-E170"},"PeriodicalIF":0.0,"publicationDate":"2018-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-0733-6957","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36773112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Reliability and Accuracy of Ball Speed During Different Strokes in Young Tennis Players. 青少年网球运动员不同击球速度的可靠性和准确性。

Sports medicine international open Pub Date : 2018-09-25 eCollection Date: 2018-09-01 DOI: 10.1055/a-0662-5375

Irene González-González, David Rodríguez-Rosell, David Clavero-Martín, Ricardo Mora-Custodio, Fernando Pareja-Blanco, Juan Manuel Yáñez García, Juan José González-Badillo

{"title":"Reliability and Accuracy of Ball Speed During Different Strokes in Young Tennis Players.","authors":"Irene González-González, David Rodríguez-Rosell, David Clavero-Martín, Ricardo Mora-Custodio, Fernando Pareja-Blanco, Juan Manuel Yáñez García, Juan José González-Badillo","doi":"10.1055/a-0662-5375","DOIUrl":"10.1055/a-0662-5375","url":null,"abstract":"This study aimed to examine the relationship between anthropometric and sport level (SL) variables and both ball speed and accuracy in young male competitive tennis players. A secondary aim of this study was to analyze the possible differences in ball speed and accuracy between players of different competitive levels. A total of 85 players (age: 14.7±2.4 years; height: 1.65±0.12 m; body weight: 56.3±13.4 kg) were divided into five groups according to their positions in the ranking list. To measure stroke performances, the goal was to hit 20 balls at the maximum possible speed inside the court, with the opportunity of hitting a maximum of 30 balls for each groundstroke and 40 for serve. Accuracy was calculated by dividing the number of balls inside the default surface by the total number of hits. The ball speed showed high reliability for all three strokes assessed. The ball speed progressively increased as SL increased for all strokes, whereas accuracy remained unchanged across SL groups. All independent variables presented significant relationships (r=0.59-0.85, p<0.05-0.001) with ball speed for all strokes. However, after applying partial correlations these relationships decreased substantially (r=0.02-0.51). The accuracy showed significant relationships with SL only in the serve (r=0.31, p<0.05) and backhand (r=0.26, p<0.05) strokes. In conclusion, the results of the present study suggest that tennis performance depends on increasing ball speed while maintaining a relatively stable level of accuracy.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"2 5","pages":"E133-E141"},"PeriodicalIF":0.0,"publicationDate":"2018-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/d9/c5/10-1055-a-0662-5375.PMC6259460.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36773108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Static Stretching with Superficial Cooling on Muscle Stiffness. 静态拉伸加表面冷却对肌肉僵硬的影响。

Sports medicine international open Pub Date : 2018-09-25 eCollection Date: 2018-09-01 DOI: 10.1055/a-0684-9375

Masatoshi Nakamura, Ryo Hirabayashi, Shuhei Ohya, Takafumi Aoki, Daichi Suzuki, Mitsuki Shimamoto, Takanori Kikumoto, Wataru Ito, Emi Nakamura, Tomoya Takabayashi, Mtsuaki Edama

{"title":"Effect of Static Stretching with Superficial Cooling on Muscle Stiffness.","authors":"Masatoshi Nakamura, Ryo Hirabayashi, Shuhei Ohya, Takafumi Aoki, Daichi Suzuki, Mitsuki Shimamoto, Takanori Kikumoto, Wataru Ito, Emi Nakamura, Tomoya Takabayashi, Mtsuaki Edama","doi":"10.1055/a-0684-9375","DOIUrl":"https://doi.org/10.1055/a-0684-9375","url":null,"abstract":"This study aimed to clarify the acute effect of static stretching (SS) with superficial cooling on dorsiflexion range of motion (DF ROM) and muscle stiffness. Sixteen healthy males participated in the cooling condition and a control condition in a random order. The DF ROM and the shear elastic modulus of medial gastrocnemius (MG) in the dominant leg were measured during passive dorsiflexion. All measurements were performed prior to (PRE) and immediately after 20 min of cooling or rested for 20 min (POST), followed by 2 min SS (POST SS). In cooling condition, DF ROM at POST and POST SS were significantly higher than that at PRE and DF ROM at POST SS was significantly higher than that at POST. In addition, the shear elastic modulus at POST was significantly higher than that at PRE and the shear elastic modulus at POST SS was significantly lower than those at PRE and POST. However, there were no significant differences in the percentage changes between PRE and POST SS between the cooling and control conditions. Our results showed that effects of SS with superficial cooling on increases in ROM and decrease in muscle stiffness were no more beneficial than those of SS alone.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"2 5","pages":"E142-E147"},"PeriodicalIF":0.0,"publicationDate":"2018-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-0684-9375","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36773109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Effects of Repeated-Sprint Training in Hypoxia on Tennis-Specific Performance in Well-Trained Players. 低氧条件下重复冲刺训练对训练有素运动员网球专项表现的影响。

Sports medicine international open Pub Date : 2018-09-25 eCollection Date: 2018-09-01 DOI: 10.1055/a-0719-4797

Cyril Brechbuhl, Franck Brocherie, Gregoire P Millet, Laurent Schmitt

{"title":"Effects of Repeated-Sprint Training in Hypoxia on Tennis-Specific Performance in Well-Trained Players.","authors":"Cyril Brechbuhl, Franck Brocherie, Gregoire P Millet, Laurent Schmitt","doi":"10.1055/a-0719-4797","DOIUrl":"https://doi.org/10.1055/a-0719-4797","url":null,"abstract":"This study examined the physiological, physical and technical responses to repeated-sprint training in normobaric hypoxia [RSH, inspired fraction of oxygen (FiO 2 ) 14.5%] vs. normoxia (RSN, FiO 2 20.9%). Within 12 days, eighteen well-trained tennis players (RSH, n=9 vs. RSN, n=9) completed five specific repeated-sprint sessions that consisted of four sets of 5 maximal shuttle-run sprints. Testing sessions included repeated-sprint ability and Test to Exhaustion Specific to Tennis (TEST). TEST's maximal duration to exhaustion and time to attain the 'onset of blood lactate accumulation' at 4 mMol.L -1 (OBLA) improvements were significantly higher in RSH compared to RSN. Change in time to attain OBLA was concomitant with observations similar in time to the second ventilatory threshold. Significant interaction (P=0.003) was found for ball accuracy with greater increase in RSH (+13.8%, P=0.013) vs. RSN (-4.6%, P=0.15). A correlation (r=0.59, P<0.001) was observed between change in ball accuracy and TEST's time to exhaustion. Greater improvement in some tennis-specific physical and technical parameters was observed after only 5 sessions of RSH vs. RSN in well-trained tennis players.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"2 5","pages":"E123-E132"},"PeriodicalIF":0.0,"publicationDate":"2018-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-0719-4797","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36773107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 21

Predictive Factors for Vitamin D Concentrations in Swiss Athletes: A Cross-sectional Study. 瑞士运动员维生素D浓度的预测因素:一项横断面研究。

Sports medicine international open Pub Date : 2018-09-25 eCollection Date: 2018-09-01 DOI: 10.1055/a-0669-0791

Simeon Joel Zürcher, Andrea Quadri, Andreas Huber, Lothar Thomas, Graeme Leonard Close, Saskia Brunner, Patrik Noack, Boris Gojanovic, Susi Kriemler

{"title":"Predictive Factors for Vitamin D Concentrations in Swiss Athletes: A Cross-sectional Study.","authors":"Simeon Joel Zürcher, Andrea Quadri, Andreas Huber, Lothar Thomas, Graeme Leonard Close, Saskia Brunner, Patrik Noack, Boris Gojanovic, Susi Kriemler","doi":"10.1055/a-0669-0791","DOIUrl":"https://doi.org/10.1055/a-0669-0791","url":null,"abstract":"Vitamin D concentrations corresponding to 75 nmol/L 25(OH)D have been associated with maintained muscle function, growth and regeneration, optimal bone health and immunology in athletes. The objective of this study was to investigate the prevalence and predictors of insufficient 25(OH)D concentrations in athletes. Six hundred three Swiss athletes were assessed. 25(OH)D was analysed by high-performance liquid chromatography (HPLC). A standardized questionnaire was used to gather information about potential predictors for 25(OH)D concentrations; 50.5% showed insufficient 25(OH)D concentrations. Differences in predicted probability of insufficient 25(OH)D were found for those vitamin D supplemented (42%) versus not supplemented (52%), in those performing indoor (58%) versus outdoor sports (43%), and during the sun-deprived seasons of fall (49%), winter (70%) and spring (57%) compared with summer (17%). Higher BMI z-scores and age were associated with higher 25(OH)D concentrations. In conclusion, insufficient 25(OH)D concentrations were common among athletes especially at a younger age, among those not supplemented, in athletes who trained indoors, and during the sun-deprived seasons. Because the prevalence of insufficient 25(OH)D concentrations in this study was high, regular supplementation in athletes may be indicated, except perhaps during the summer season. Further research is needed to determine which 25(OH)D concentrations lead to optimal health and performance in athletes.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"2 5","pages":"E148-E156"},"PeriodicalIF":0.0,"publicationDate":"2018-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-0669-0791","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36773110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Aerobic Variables for Prediction of Alpine Skiing Performance - A Novel Approach. 用于预测高山滑雪成绩的有氧变量——一种新方法。

Sports medicine international open Pub Date : 2018-09-07 eCollection Date: 2018-07-01 DOI: 10.1055/a-0655-7249

Robert Nilsson, Ann-Sofie Lindberg, Apostolos Theos, Richard A Ferguson, Christer Malm

{"title":"Aerobic Variables for Prediction of Alpine Skiing Performance - A Novel Approach.","authors":"Robert Nilsson, Ann-Sofie Lindberg, Apostolos Theos, Richard A Ferguson, Christer Malm","doi":"10.1055/a-0655-7249","DOIUrl":"https://doi.org/10.1055/a-0655-7249","url":null,"abstract":"The aim of this study was to investigate the predictive power of aerobic test results and anthropometric variables on FIS-ranking of junior elite alpine skiers. Results from twenty-three male and female adolescent elite alpine skiers from two seasons were included in the multivariate statistical models. Physical work capacity was determined by V̇O2peak, blood lactate concentration ([HLa]b), and heart rate (HR) during ergometer cycling. Anthropometric variables were body stature, body weight and calculated BMI. No significant correlation between competitive performance and aerobic work capacity or anthropometric data was observed neither in male nor female adolescent skiers. Pre-season physical tests and anthropometric data could therefore not predict end-season FIS-ranking. The best regression (R2) and prediction (Q2) models of FIS slalom (SL) and giant slalom (GS) rank reached R2=0.51 to 0.86, Q2=-0.73 to 0.18, indicating no valid models. This study could not establish V̇O2peak and other included variables as predictors of competitive performance. When combining results from commonly used tests for alpine skiers, and applying multivariate statistical models, investigated tests seems of limited used for athletes, coaches, and ski federations. Performance-specific pre-season tests must be developed and validated for prediction of performance and guidance of exercise training.","PeriodicalId":74857,"journal":{"name":"Sports medicine international open","volume":"2 4","pages":"E105-E112"},"PeriodicalIF":0.0,"publicationDate":"2018-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1055/a-0655-7249","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"36816634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10