Workloads of Competitive Surfing: Work-to-Relief Ratios, Surf-Break Demands, and Updated Analysis (2018)
Journal Article
Farley, O. R., Secomb, J. L., Raymond, E. R., Lundgren, L. E., Ferrier, B. K., Abbiss, C. R., & Sheppard, J. M. (2018). Workloads of Competitive Surfing: Work-to-Relief Ratios, Surf-Break Demands, and Updated Analysis. Journal of strength and conditioning research, 32(10), 2939-2948. https://doi.org/10.1519/jsc.0000000000002659

The study provides an in-depth descriptive and quantitative time-motion analysis of competitive surfing, using Global PositioningSystem (GPS) units and video synchronization, which serves toextend upon the results of Farley, Harris, and Kilding (Jour... Read More about Workloads of Competitive Surfing: Work-to-Relief Ratios, Surf-Break Demands, and Updated Analysis.

Comparison of the effects of active, passive and mixed warm ups on swimming performance. (2014)
Journal Article
Adams, S., & Psycharakis, S. (2014). Comparison of the effects of active, passive and mixed warm ups on swimming performance. Journal of sports medicine and physical fitness, 54(5), 559-565

AIM: The aim of this paper was to compare the effects of an active (AWU), passive (PWU) and mixed warm up (MWU) on swimming performance. METHODS: Eight male competitive swimmers completed each type of WU and, following a 20-minute rest, performed a m... Read More about Comparison of the effects of active, passive and mixed warm ups on swimming performance..

Relationships between glide efficiency and swimmers’ size and shape characteristics (2012)
Journal Article
Naemi, R., Psycharakis, S., McCabe, C., Connaboy, C., & Sanders, R. (2012). Relationships between glide efficiency and swimmers’ size and shape characteristics. Journal of Applied Biomechanics, 28, 400-411

Glide efficiency, the ability of a body to minimise deceleration over the glide, can vary with variations in the body's size and shape. The purpose of this study was to investigate the relationships between glide efficiency and the size and shape cha... Read More about Relationships between glide efficiency and swimmers’ size and shape characteristics.

Kinematic differences between front crawl sprint and distance swimmers at sprint pace (2011)
Journal Article
McCabe, C., Psycharakis, S., & Sanders, R. (2011). Kinematic differences between front crawl sprint and distance swimmers at sprint pace. Journal of Sports Sciences, 29, 115-123. https://doi.org/10.1080/02640414.2010.523090

The purpose of this study was to use three-dimensional methods to determine whether there are distinct kinematic differences between sprint and distance front crawl swimmers when swimming at a sprint pace. Seven sprint and eight distance specialists... Read More about Kinematic differences between front crawl sprint and distance swimmers at sprint pace.

Shoulder and hip roll differences between breathing and non-breathing conditions in front crawl swimming (2011)
Journal Article
Psycharakis, S., & McCabe, C. (2011). Shoulder and hip roll differences between breathing and non-breathing conditions in front crawl swimming. Journal of Biomechanics, 44, 1752-1756. https://doi.org/10.1016/j.jbiomech.2011.04.004

The effects of breathing on body roll have been previously investigated for the roll of the whole trunk only. The purposes of this study were: to calculate separately the shoulder roll (SR) and hip roll (HR) of swimmers during front crawl for non-bre... Read More about Shoulder and hip roll differences between breathing and non-breathing conditions in front crawl swimming.

Assessment of accuracy, reliability and force measurement errors for a tethered swimming apparatus (2011)
Journal Article
Psycharakis, S., Paradisis, G., & Zacharogiannis, E. (2011). Assessment of accuracy, reliability and force measurement errors for a tethered swimming apparatus. International journal of performance analysis in sport, 11, 410-416

Researchers frequently use purpose-built devices to calculate propulsive forces during tethered swimming. Although such devices are subject to force measurement errors, no specific methods have been suggested in the swimming literature for the estima... Read More about Assessment of accuracy, reliability and force measurement errors for a tethered swimming apparatus.

Body roll in swimming: a review (2010)
Journal Article
Psycharakis, S., & Sanders, R. (2010). Body roll in swimming: a review. Journal of Sports Sciences, 28, 219-236. https://doi.org/10.1080/02640410903508847

In this article, we present a critical review of the swimming literature on body roll, for the purposes of summarizing and highlighting existing knowledge, identifying the gaps and limitations, and stimulating further research. The main research find... Read More about Body roll in swimming: a review.

Validity of the use of a fixed point for intracycle velocity calculations in swimming (2009)
Journal Article
Psycharakis, S. G., & Sanders, R. H. (2009). Validity of the use of a fixed point for intracycle velocity calculations in swimming. Journal of Science and Medicine in Sport, 12(2), 262-265. https://doi.org/10.1016/j.jsams.2007.11.008

The intracycle velocity (V) of a fixed point on a swimmer’s body, usually the hip, is frequently calculated as a direct indication of the intracycle V of the centre of mass (CM). The purpose of this study was to examine whether the intracycle V of th... Read More about Validity of the use of a fixed point for intracycle velocity calculations in swimming.

Rolling rhythms in front crawl swimming with six-beat kick (2009)
Journal Article
Psycharakis, S. G., Sanders, R. H., Sanders, R., & Psycharakis, S. (2009). Rolling rhythms in front crawl swimming with six-beat kick. Journal of Biomechanics, 42(3), 273-279. https://doi.org/10.1016/j.jbiomech.2008.10.037

The purpose of this study was to establish the rhythm characteristics of skilled front crawl swimmers using a six-beat kick. These included the amplitudes of the first three Fourier harmonics (H1, H2, H3) and their percent contributions to power cont... Read More about Rolling rhythms in front crawl swimming with six-beat kick.

Shoulder and hip roll changes during 200-m front crawl swimming (2008)
Journal Article
Psycharakis, S., & Sanders, R. (2008). Shoulder and hip roll changes during 200-m front crawl swimming. Medicine and Science in Sports and Exercise, 40, 2129-2136. https://doi.org/10.1249/MSS.0b013e31818160bc

Purpose: To determine accurately the magnitude and changes in shoulder roll (SR) and hip roll (HR) throughout a 200m maximum front crawl swim and whether SR and HR were associated with swimming velocity (V). Bilateral roll asymmetries and timing diff... Read More about Shoulder and hip roll changes during 200-m front crawl swimming.

Swimming. (2008)
Book Chapter
Sanders, R., Psycharakis, S., Naemi, R., McCabe, C., & Machtsiras, G. (2008). Swimming. In Handbook of Biomechanics and Human Movement Science (323-339). Routledge

Analysis of selected kinematic and physiological performance determinants during incremental testing in elite swimmers. (2008)
Journal Article
Psycharakis, S., Cooke, C., Paradisis, G., O'Hara, J., & Phillips, G. (2008). Analysis of selected kinematic and physiological performance determinants during incremental testing in elite swimmers. Journal of strength and conditioning research, 22, 951-957. https://doi.org/10.1519/JSC.0b013e31816a6364

This study examined the relationships between selected kinematic and physiological parameters and their influence on performance, during incremental exercise in elite swimmers (competing at international level). Eleven men and ten women (all speciali... Read More about Analysis of selected kinematic and physiological performance determinants during incremental testing in elite swimmers..

Analysis of swimming technique: state of the art: applications and implications. (2006)
Journal Article
Sanders, R., Psycharakis, S., McCabe, C., Naemi, R., Connaboy, C., Li, S., Scott, G., & Spence, A. (2006). Analysis of swimming technique: state of the art: applications and implications. Revista portuguesa de ciências do desporto, 6, 20(S)-24(S)

Methods of analysing motion have advanced greatly in recent years due to improvement in technology as well as application of scientific approaches. Methods of analysis may involve video based techniques from which kinematics and kinetics can be deriv... Read More about Analysis of swimming technique: state of the art: applications and implications..