Publikationsdatenbank

Müller, E.;Pröller, P.;Ferreira-Briza, F.;Aglas, L.;Stöggl, T.. (2019). Effectiveness of Grounded Sleeping on Recovery After Intensive Eccentric Muscle Loading. Front Physiol. 10():35.

Abstract

Purpose: We set out to investigate the effectiveness of grounded sleeping on the time course of recovery with respect to muscle soreness and athletic performance after intensive eccentric muscle loading. Methods: Twenty-two healthy participants were recruited for this study and randomly assigned to an experimental group (GRD, grounded sleeping, n = 12) or control group (UGD, sham-grounded sleeping, n = 10) to evaluate the effects of 10 days recovery with GRD vs. UGD following a single intensive downhill treadmill intervention in a triple-blinded (participant, tester, and data analyst) manner. To operationalize recovery a test battery was performed at baseline and on days 1, 2, 3, 5, 7, and 10 post-intervention: (1) perception of muscle soreness (VAS), (2) creatine kinase blood levels (CK), (3) maximum voluntary isometric contraction (MVIC) for both legs, (4) counter movement jump (CMJ) and drop jump (DJ) performance. Furthermore, in four participants blood was sampled for detailed analysis of complete blood counts and serum-derived inflammation markers. Results: The downhill treadmill running intervention led to distinct changes in all measured parameters related to fatigue. These changes were detectable already 5-min post intervention and were not fully recovered 10 days post intervention. GRD led to less pronounced decrease in performance (CMJ, MVIC) and less increase with respect to CK compared with UGD (all P < 0.05). Detailed blood samples demonstrated that grounded sleeping modulates the recovery process by (a) keeping a constant hemoconcentration, as represented by the number of erythrocytes, and the hemoglobin/hematocrit values; and (b) by the reduction of muscle damage-associated inflammation markers such as, IP-10, MIP-1alpha, and sP-Selectin. Conclusion: The downhill running protocol is a feasible methodology to produce long term muscle soreness and muscular fatigue. GRD was shown to result in faster recovery and/or less pronounced markers of muscle damage and inflammation. GRD might be seen as a simple methodology to enhance acute and long-term recovery after intensive eccentric exercises.

Web

https://www.ncbi.nlm.nih.gov/pubmed/30745882

Martinez, A.;Jahnel, R.;Buchecker, M.;Snyder, C.;Brunauer, R.;Stöggl, T.. (2019). Development of an Automatic Alpine Skiing Turn Detection Algorithm Based on a Simple Sensor Setup. Sensors. 19(4):.

Abstract

In order to gain insight into skiing performance, it is necessary to determine the point where each turn begins. Recent developments in sensor technology have made it possible to develop simpler automatic turn detection methodologies, however they are not feasible for regular use. The aim of this study was to develop a sensor set up and an algorithm to precisely detect turns during alpine ski, which is feasible for a daily use. An IMU was attached to the posterior upper cuff of each ski boot. Turn movements were reproduced on a ski-ergometer at different turn durations and slopes. Algorithms were developed to analyze vertical, medio-lateral, anterior-posterior axes, and resultant accelerometer and gyroscope signals. Raw signals, and signals filtered with 3, 6, 9, and 12 Hz cut-offs were used to identify turn switch points. Video recordings were assessed to establish a reference turn-switch and precision (mean bias = 5.2, LoA = 51.4 ms). Precision was adjusted based on reference and the best signals were selected. The z-axis and resultant gyroscope signals, filtered at 3Hz are the most precise signals (0.056 and 0.063 s, respectively) to automatically detect turn switches during alpine skiing using this simple system.

Web

https://www.ncbi.nlm.nih.gov/pubmed/30795560

Jonsson, M.;Welde, B.;Stöggl, T. L.. (2019). Biomechanical differences in double poling between sexes and level of performance during a classical cross-country skiing competition. Journal of Sports Science. ():1-9.

Abstract

Biomechanical differences in double poling (DP) between sex and performance level were investigated in female and male cross-country skiers during a classical race (10/15 km). Skiers were divided into faster and slower on basis of race performance: females faster (n=20), females slower (n=20), males faster (n=20), and males slower (n=20). Based on video analysis while DP in a flat section of the track, joint and pole angles at pole plant (PP) and pole-off, cycle characteristics and the use and coordination pattern of heel-raise (raise of heels from the ground to have a higher body position at PP) were analysed. Faster females and males had 4.3% and 7.8% higher DP velocity than their slower counterparts (both P<0.001). Faster males had 6.5% longer cycles than slower males (P<0.001). Faster skiers stopped heel-raise later than slower skiers (females: 2.0+/-3.4% vs. -1.0+/-3.5%, P<0.05; males: 3.9+/-2.4% vs. 0.8+/-3.2% of cycle time in relation to PP, P<0.001). At PP, faster skiers and male skiers had a smaller pole angle and greater ankle to hip and ankle to shoulder angle with respect to vertical, resulting in a more distinct forward body lean. However, the majority of the differences are likely due to higher DP velocity.

Web

https://www.ncbi.nlm.nih.gov/pubmed/30747038

Finkenzeller, Thomas;Würth, Sabine;Müller, Erich;Amesberger, Günter. (2019). Ageing‐related changes of cognitive performance and stress regulation in high functioning elderly individuals. Scandinavian Journal of Medicine & Science in Sports. ():.

Abstract

Sorry no Abstract available!

Amesberger, Günter;Finkenzeller, Thomas;Müller, Erich;Würth, Sabine. (2019). Ageing‐related changes of the relationship between the physical self‐concept and the physical fitness in elderly individuals. Scandinavian Journal of Medicine & Science in Sports. ():.

Abstract

Sorry no Abstract available!

Gonaus, C.;Birklbauer, J.;Lindinger, S. J.;Stoggl, T. L.;Muller, E.. (2019). Changes Over a Decade in Anthropometry and Fitness of Elite Austrian Youth Soccer Players. Front Physiol. 10():333.

Abstract

Increases in physical (e.g., high-intensity running and sprinting), technical (e.g., passing rate), and tactical (e.g., player density) aspects made elite level soccer more challenging within the past years. The aim of the study was to evaluate whether these evolutions are also been reflected in changes in anthropometric and fitness characteristics between former (2002 to 2005) and current (2012 to 2015) elite Austrian youth development center (U13 to U14) and soccer academy (U15 to U18) players. A battery of anthropometric, general and soccer-specific fitness tests was conducted annually at the end of each year. Independent t-test and Cohen's d (ES) were calculated to compare the two four-year periods (2530 vs. 2611 players) at each age group separately. Current players were significantly faster in 20 m sprint (ES = 0.26-0.50) and reaction test (ES = 0.15-0.39, except for U18), but less flexible at sit-and-reach (ES = -0.19 to -0.55), in all age categories. Whereas height (ES = 0.26-0.32), body mass (ES = 0.11-0.18) and countermovement jump (ES = 0.24-0.26) increased significantly at youth development center level, current academy players performed superior at shuttle sprint (ES = 0.21-0.59), hurdles agility run (ES = 0.24-0.49), and endurance run (ES = 0.11-0.20). These changes over time in speed, change-of-direction ability, lower-body power, coordination, and endurance were attributed to modern training approaches (e.g., modified games and change-of-direction drills) and modifications in selection politics (e.g., coaches favor speed and decision-making skills).

Web

https://www.ncbi.nlm.nih.gov/pubmed/30984022;https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6447713/pdf/fphys-10-00333.pdf

Weghuber, D.;Boyland, E. ;Caroli, M. ;Erhardt, E. ;Felut, M. ;Forsland, A. ;Mazur, A.;Ring-Dimitriou, S. ;Vlachopapdopoulou, E. A. ;Thivel, D.. (2019). Childhood Obesity: The Need to Translate Research into Daily Practice: Announcing the Annals of Nutrition and Metabolism as the Official Journal of the European Childhood Obesity Group.. . (74):80-82.

Abstract

Sorry no Abstract available!

Wagner, H.;Sperl, B.;Bell, J. W.;von Duvillard, S. P.. (2019). Testing specific physical performance in male team handball players and the relationship to general tests in team sports. J Strength Cond Res. 33(4):1056-1064.

Abstract

Team handball is exemplified by frequent changes in intensities and different complex movements during games, whereas physical performance has often been tested predominantly using standardized general tests. The study aimed (a) to determine the relationship between specific and general physical performance as well as between specific aerobic capacity and agility, and (b) to ascertain the relevance of these tests for strength and conditioning professionals. Seventy-two male indoor court players performed a game-based performance test (GBPT) including team handball-specific techniques, upper-body and lower-body strength tests, a 30-m sprint test, a countermovement jump Abalakov (CMJA) test (with arm swing), and an incremental treadmill-running test. To assess the specific physical performance using the general test performance, we used linear regression calculations. In addition, a principal component factor analysis was calculated. Linear regression analyses revealed a low correlation (R < 0.5) between specific and general aerobic performance, 30-m sprinting time and specific agility in the GBPT, jump height in the CMJA test and jump height in the jump shot, as well as isokinetic shoulder rotation torque and ball velocity in the jump shot. However, a moderate correlation (R > 0.5) was found between specific aerobic performance and specific agility in the GBPT. Principal component factor analysis yielded separate components for specific and general physical performance with a cumulative variance of 69%. The results of this study clearly indicated that general and team handball-specific performance are separate components. Recommendations to strength and conditioning professionals and coaches in team handball were presented.

Web

<Go to ISI>://WOS:000480699600020

Wagner, H.;Fuchs, P.;Fusco, A.;Fuchs, P.;Bell, J. W.;von Duvillard, S. P.. (2019). Physical Performance in Elite Male and Female Team-Handball Players. . 14(1):60-67.

Abstract

Purpose: Biological differences between men and women are well known; however, literature addressing knowledge about the influence of sex on specific and general performance in team handball is almost nonexistent. Consequently, the aim of the study was to assess and compare specific and general physical performance in male and female elite team-handball players, to determine if the differences are consequential for general compared with specific physical performance characteristics and the relationship between general and specific physical performance. Methods: Twelve male and 10 female elite team-handball players performed a game-based performance test, upper- and lower-body strength and power tests, a sprinting test, and an incremental treadmill running test. Results: Significant differences (P < .05) between male and female players were found for peak oxygen uptake and total running time during the treadmill test, 30-m sprinting time, leg-extension strength, trunkand shoulder-rotation torque, and countermovement-jump height, as well as offense and defense time, ball velocity, and jump height in the game-based performance test. An interaction (sex x test) was found for time and oxygen uptake, and except shoulder-rotation torque and ball velocity in women, the authors found only a low relationship between specific and general physical performance. Conclusion: The results of the study revealed that male players are heavier, taller, faster, and stronger; jump higher; and have better aerobic performance. However, female players performed relatively better in the team-handball-specific tests than in the general tests. The findings also suggest that female players should focus more on strength training.

Web

<Go to ISI>://WOS:000454337800010

Takeda, M.;Miyamoto, N.;Takaaki, E.;Ohtonen, O.;Lindinger, S;Linnamo, V.;Stöggl, T.. (2019). Classical cross-country skiing technique detection by high precision kinematic global navigation satellite system. . ():93.

Abstract

Sorry no Abstract available!

Takeda, Masaki;Miyamoto, Naoto;Endo, Takaaki;Ohtonen, Olli;Lindinger, Stefan;Linnamo, Vesa;Stöggl, Thomas. (2019). Cross-Country Skiing Analysis and Ski Technique Detection by High-Precision Kinematic Global Navigation Satellite System. Sensors. 19(22):.

Abstract

Sorry no Abstract available!

Swarén, Mikael;Söhnlein, Quirin;Stöggl, Thomas;Björklund, Glenn. (2019). Using 3D Motion Capture to Analyse Ice Hockey Shooting Technique on Ice. . 1():204-208.

Abstract

Sorry no Abstract available!

Stöggl, T. L.;Sperlich, B.. (2019). Editorial: Training Intensity, Volume and Recovery Distribution Among Elite and Recreational Endurance Athletes. Front Physiol. 10():592.

Abstract

Sorry no Abstract available!

Web

https://www.ncbi.nlm.nih.gov/pubmed/31178747;https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6537749/pdf/fphys-10-00592.pdf

Stöggl, Thomas Leonhard;Sperlich, Billy. (2019). Training intensity, volume and recovery distribution among elite and recreational endurance athletes. Front Physiol. 10():592.

Abstract

Sorry no Abstract available!

Stöggl, T.;Ohtonen, O.;Takeda, M.;Miyamoto, N.;Snyder, C.;Lemmettyla, T.;Linnamo, V.;Lindinger, S. J.. (2019). Comparison of Exclusive Double Poling to Classic Techniques of Cross-country Skiing. Medicine & Science in Sports & Exercise. 51(4):760-772.

Abstract

INTRODUCTION: This study aimed to 1) determine basic physiological demands during a simulated on-snow cross-country skiing (XCS) race when using grip-waxed skis (all classic XCS techniques [CLASSIC]), versus glide-waxed skis for exclusive double poling (DP) and 2) analyze in which track sections DP is different from CLASSIC under controlled gliding conditions in elite junior and senior skiers. METHODS: Nineteen male and female elite XC skiers performed 1) two randomized simulated XCS races over 5.3 km using DP or CLASSIC measuring section times, V O2, HR, blood lactate, and RPE; and 2) V O2peak tests using diagonal stride and DP on treadmill. RESULTS: The total group showed no differences in performance or physiological responses between DP and CLASSIC. Elite male skiers achieved improved (~23 s, P < 0.05), male juniors equal (P > 0.05) and females worse (~43 s, P < 0.05) performance with DP versus CLASSIC. Flat and undulating terrain favored DP in men, whereas uphill favored CLASSIC in females (~60 s). Uphill sections showed the greatest group differences. Greater RPE was found in the arms during DP, whereas RPE was greater in the legs using CLASSIC. V O2peak in DP was ~95% of V O2max. CONCLUSIONS: Male skiers demonstrated superior performance with exclusively using DP on a Federation International de Ski regulation-compliant XCS track, whereas junior males achieved similar, and females' weaker performance using DP versus CLASSIC. The greatest potential in females is in uphill sections where they distinctly lose time. Exclusive DP might only be beneficial in athletes with high upper-body capacity, and double-pole-specific training and technique. To generalize the findings of the current study, further analysis of snow conditions and course topography is required.

Web

https://www.ncbi.nlm.nih.gov/pubmed/30418963

Stöggl, T.;Hertlein, M.. (2019). Isocalorics and enjoyment of modern endurance training modalities (HIT vs. SIT vs. Threshold vs. LIT) in fit and unfit. . ():.

Abstract

Sorry no Abstract available!

Stöggl, T.. (2019). Altered demands in cross-country skiing. . ():.

Abstract

Sorry no Abstract available!

Snyder, C.;Martinéz, A.;Stöggl, T.. (2019). Validation of a Simple Sensor and Algorithm System to Calculated Edging Angle During Alpine Skiing. . ():.

Abstract

Sorry no Abstract available!

Snyder, C.;Brunauer, R.;Martinéz, A.;Stöggl, T.. (2019). Ski Style Classification and Scoring Using a Simple Sensor and Algorithm System. . ():.

Abstract

Sorry no Abstract available!

Snyder, C.;Brunauer, R.;Jahnel, R.;Stöggl, T.. (2019). Ski Style Classification and Scoring Using a Simple Sensor and Algorithm System. . ():.

Abstract

Sorry no Abstract available!

Ring-Dimitriou, S.;Krustrup, P.;Coelho-E-Silva, M. J.;Mota, J.;Seabra, A.;Rego, C.;Mazur, A.;Vlachopapadopoulou, E. A.;Caroli, M.;Frelut, M. L.;Erhardt, E.;Forslund, A.;Boyland, E.;Weghuber, D.;Thivel, D.. (2019). Could sport be part of pediatric obesity prevention and treatment? Expert conclusions from the 28th European Childhood Obesity Group Congress. Journal of Sport and Health Science. ():1-3.

Abstract

Sorry no Abstract available!

Müller, E.;Pröller, P.;Ferreira-Briza, F.;Aglas, L.;Stöggl, T.. (2019). Effectiveness of Grounded Sleeping on Recovery After Intensive Eccentric Muscle Loading. Front Physiol. 10():35.

Abstract

Purpose: We set out to investigate the effectiveness of grounded sleeping on the time course of recovery with respect to muscle soreness and athletic performance after intensive eccentric muscle loading. Methods: Twenty-two healthy participants were recruited for this study and randomly assigned to an experimental group (GRD, grounded sleeping, n = 12) or control group (UGD, sham-grounded sleeping, n = 10) to evaluate the effects of 10 days recovery with GRD vs. UGD following a single intensive downhill treadmill intervention in a triple-blinded (participant, tester, and data analyst) manner. To operationalize recovery a test battery was performed at baseline and on days 1, 2, 3, 5, 7, and 10 post-intervention: (1) perception of muscle soreness (VAS), (2) creatine kinase blood levels (CK), (3) maximum voluntary isometric contraction (MVIC) for both legs, (4) counter movement jump (CMJ) and drop jump (DJ) performance. Furthermore, in four participants blood was sampled for detailed analysis of complete blood counts and serum-derived inflammation markers. Results: The downhill treadmill running intervention led to distinct changes in all measured parameters related to fatigue. These changes were detectable already 5-min post intervention and were not fully recovered 10 days post intervention. GRD led to less pronounced decrease in performance (CMJ, MVIC) and less increase with respect to CK compared with UGD (all P < 0.05). Detailed blood samples demonstrated that grounded sleeping modulates the recovery process by (a) keeping a constant hemoconcentration, as represented by the number of erythrocytes, and the hemoglobin/hematocrit values; and (b) by the reduction of muscle damage-associated inflammation markers such as, IP-10, MIP-1alpha, and sP-Selectin. Conclusion: The downhill running protocol is a feasible methodology to produce long term muscle soreness and muscular fatigue. GRD was shown to result in faster recovery and/or less pronounced markers of muscle damage and inflammation. GRD might be seen as a simple methodology to enhance acute and long-term recovery after intensive eccentric exercises.

Web

https://www.ncbi.nlm.nih.gov/pubmed/30745882;https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6360250/pdf/fphys-10-00035.pdf

Miyamoto, N.;Takeda, M.;Stöggl, T.;Ohtonen, O.;Linnamo, V.;Morimo, T.;Hatakeyma, N.;Miura, R.;Miyamoto, A.;Hariyama, M.;Lindinger, S. (2019). Validation of wearable kinematic GNSS receiver for cross-country skiing. . ():94.

Abstract

Sorry no Abstract available!

Martinez, A.;Snyder, C.;Brunauer, R.;Buchecker, M.;Jahnel, R.;Stöggl, T.. (2019). Development of an automatic alpine skiing turn detection algorithm based on a simple sensor setup. . ():.

Abstract

Sorry no Abstract available!

Martínez, A.;Jahnel, R.;Buchecker, M.;Snyder, C.;Brunauer, R.;Stöggl, T.. (2019). Development of an automatic alpine skiing turn detection algorithm based on a simple sensor setup. . ():.

Abstract

Sorry no Abstract available!