To analyze young swimmers’ performance regarding sex and skill level, 23 boys and 26 girls (15.7 ± 0.8 and 14.5 ± 0.8 years old, respectively) were assessed for anthropometry, flexibility, strength, drag, coordination, and biomechanical variables. During a 50-m maximal front-crawl bout, seven aerial and six underwater Qualisys cameras assessed kinematics, and a load cell was used to measure drag (Tedea, United Kingdom) and tethered swimming force. A multivariate analysis of variance test (p < .05) enabled us to observe differences between skill levels in speed, stroke frequency, stroke index, and intracyclic velocity variations, but most relevant differences were noticed when comparing sexes, particularly for anthropometrics, shoulder flexibility, speed, stroke frequency, stroke length, drag, mechanical power, power per stroke, and maximal and mean force. Considering the included variables, only male swimmers’ performance could be predicted through multiple linear regression, with stroke index, left shoulder flexion, and intracycle velocity variations showing great importance in achieving better results.
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Integrated Analysis of Young Swimmers’ Sprint Performance
Ana F. Silva, Pedro Figueiredo, João Ribeiro, Francisco Alves, João Paulo Vilas-Boas, Ludovic Seifert, and Ricardo J. Fernandes
Internal-Training-Load Monitoring, Notational and Time-Motion Analyses, Psychometric Status, and Neuromuscular Responses in Elite Rugby Union
Corrado Lupo, Alexandru Nicolae Ungureanu, Gennaro Boccia, Andrea Licciardi, Alberto Rainoldi, and Paolo Riccardo Brustio
Purpose: The present study aimed to verify if practicing tackles during rugby union training sessions would affect the players’ internal training load and acute strength loss. Method: A total of 9 male Italian Serie A rugby union players (age: 21 [2] y) were monitored by means of an integrated approach across 17 sessions, 6 with tackles (WT) and 11 with no tackles (NT). Edwards training load was quantified using heart-rate monitoring. Global positioning system devices were used to quantify the total distance and time at >20 W. Work-to-rest ratio was quantified by means of a video analysis. Before (PRE) and after (POST) the session, the players’ well-being and rating of perceived exertion were measured, respectively. The countermovement jump and plyometric push-up jump tests were performed on a force plate to record the players’ PRE–POST concentric peak force. Linear mixed models were applied to quantify the differences between WT and NT in terms of training load and PRE–POST force deltas, even controlling for other training factors. Results: The Edwards training load (estimated mean [EM]; standard error [SE]; WT: EM = 214, SE = 11.8; NT: EM = 194, SE = 11.1; P = .01) and session rating of perceived exertion (WT: EM = 379, SE = 21.9; NT: EM = 277, SE = 16.4; P < .001) were higher in WT than in NT. Conversely, no difference between the sessions emerged in the countermovement jump and plyometric push-up concentric peak force deltas. Conclusions: Although elite rugby union players’ external and internal training load can be influenced by practicing tackles, upper- and lower-limb strength seem to not be affected.
Hip Abductor Rate of Torque Development as Opposed to Isometric Strength Predicts Peak Knee Valgus During Landing: Implications for Anterior Cruciate Ligament Injury
Kristen M. Stearns-Reider, Rachel K. Straub, and Christopher M. Powers
SG , Walker KB , van den Bogert AJ . Effect of gender on lower extremity kinematics during rapid direction changes: an integrated analysis of three sports movements . J Sci Med Sport . 2005 ; 8 ( 4 ): 411 – 422 . PubMed ID: 16602169 doi:10.1016/S1440-2440(05)80056-8 16602169 10.1016/S1440
Monitoring Internal and External Load During Volleyball Competition
Jasper Gielen, Elise Mehuys, Daniel Berckmans, Romain Meeusen, and Jean-Marie Aerts
: 23475154 doi:10.1123/IJSPP.2012-0347 23475154 25. Kempton T , Sirotic AC , Coutts AJ . An integrated analysis of match-related fatigue in professional rugby league . J Sports Sci . 2015 ; 33 ( 1 ): 39 – 47 . PubMed ID: 24857235 doi:10.1080/02640414.2014.921832 24857235 26. Borresen J
Interaction of Kinematic, Kinetic, and Energetic Predictors of Young Swimmers’ Speed
Jorge E. Morais, Tiago M. Barbosa, José A. Bragada, Rodrigo Ramirez-Campillo, and Daniel A. Marinho
al . Integrated analysis of young swimmers’ sprint performance . Motor Control . 2019 ; 23 ( 3 ): 354 – 364 . doi:10.1123/mc.2018-0014 30599800 13. Hellard P , Pla R , Rodríguez F , Simbaña Escobar D , Pyne D . Dynamics of the metabolic response during a competitive 100-m freestyle in elite male
Measurement Characteristics of Athlete Monitoring Tools in Professional Australian Football
Samuel Ryan, Emidio Pacecca, Jye Tebble, Joel Hocking, Thomas Kempton, and Aaron J. Coutts
jump reliability performed with and without an arm swing in NCAA Division 1 intercollegiate basketball players [published online ahead of print August 21, 2018]. J Strength Cond Res . 30138237 26. Kempton T , Sirotic AC , Coutts AJ . An integrated analysis of match-related fatigue in
Influence of Faster and Slower Recovery-Profile Classifications, Self-Reported Sleep, Acute Training Load, and Phase of the Microcycle on Perceived Recovery in Futsal Players
Carolina F. Wilke, Samuel P. Wanner, Weslley H.M. Santos, Eduardo M. Penna, Guilherme P. Ramos, Fabio Y. Nakamura, and Rob Duffield
-variable timelines, without incorporation of the variability of players’ recovery or integrated analysis of the recovery measures. 4 Such characteristics limit the usability of the results to practitioners when monitoring players’ readiness to perform after a match or training session. To counter this, we recently
Increasing Breast Support is Associated With a Distal-to-Proximal Redistribution of Joint Negative Work During a Double-Limb Landing Task
Hailey B. Fong, Alexis K. Nelson, Deirdre McGhee, Kevin R. Ford, and Douglas W. Powell
Bogert AJ . Effect of gender on lower extremity kinematics during rapid direction changes: an integrated analysis of three sports movements . J Sci Med Sport . 2005 ; 8 ( 4 ): 411 – 422 . doi: 10.1016/s1440-2440(05)80056-8 18. Sigward SM , Pollard CD , Powers CM . The influence of sex and
Processing of Accelerometry Data with GGIR in Motor Activity Research Consortium for Health
Wei Guo, Andrew Leroux, Haochang Shou, Lihong Cui, Sun Jung Kang, Marie-Pierre Françoise Strippoli, Martin Preisig, Vadim Zipunnikov, and Kathleen Ries Merikangas
. Series A, Biological Sciences and Medical Sciences, 76 ( 8 ), 1486 – 1494 . https://doi.org/10.1093/gerona/glaa250 Lock , E.F. , Hoadley , K.A. , Marron , J.S. , & Nobel , A.B. ( 2013 ). Joint and individual variation explained (JIVE) for integrated analysis of multiple data types . Annals
Positional Match Running Performance and Performance Profiles of Elite Female Field Hockey
Jonne A. Kapteijns, Kevin Caen, Maarten Lievens, Jan G. Bourgois, and Jan Boone
integrated analysis of match-related fatigue in professional rugby league . J Sports Sci . 2015 ; 33 ( 1 ): 39 – 47 . PubMed ID: 24857235 doi:10.1080/02640414.2014.921832 24857235 10.1080/02640414.2014.921832 24. Manchado C , Cortell-Tormo JM , Tortosa-Martinez J . Effects of two different
