Kinematics of the Thoracic Spine in Trunk Rotation

Kinematics of the Thoracic Spine in Trunk Rotation

Dr. GJohn Mullen Biomechanics, Blog, Dr. John Mullen, Latest&Greatest, Training 2 Comments

Thoracic spine rotation is used in long-axis swimming. Therefore, understanding the biomechanical demand of this motion is mandatory to understand the optimal hydrodynamics. Unfortunately, the thoracic spine is rarely researched due to the low volume of injuries at this region. Simply comparing the thoracic spine to other areas is unjust, as the thoracic spine has many differences from the rest …

Minimizing Central Motor Control Breakdown

Minimizing Central Motor Control Breakdown

Dr. GJohn Mullen Blog, Dr. John Mullen, Latest&Greatest, Training Leave a Comment

Any repetitive task results in performance impairments over time. The cause of these decrements is typically considered physiologically induced. However, recent studies and exercise physiologist feel these impairments are influenced by the central nervous system. Transcranial magnetic stimulation (TMS) is suggested to alter the excitation of the movement areas in the brain (corticomotor tracts). The limits of maximal voluntary rate …

Auditory feedback helps adapt to altered environment

Auditory feedback helps adapt to altered environment

Dr. GJohn Mullen Blog, Competition, Dr. John Mullen, Latest&Greatest, Training Leave a Comment

Providing feedback during practice and competitions is common in all sports. Despite the difficulty of providing feedback during swimming, coaches and teammates commonly provide numerous visual and auditory cues. Sensory substitution is the skill of the nervous system to receive input from one sensory system and transmit this information to another sensory system. For example, in swimming the sensory system …

Resistance Exercise Load Does Not Determine Muscle Size

Resistance Exercise Load Does Not Determine Muscle Size

Dr. GJohn Mullen Blog, Dr. John Mullen, Dryland, Latest&Greatest, Training Leave a Comment

It is commonly thought the more weight one lifts during resistance training, the greater increase in muscle size (hypertrophy) occurs. Unfortunately, there is minimal evidence suggesting these two conditions correlate. Moreover, the size of a muscle is not suggested to correlate with swimming success. Instead of a percent of maximum, the total volume of weight lifted is potentially a means …

Friday Interview: Dr. Mitch Lomax on Inspiratory Muscle Fatigue (IMF) in Swimming

Friday Interview: Dr. Mitch Lomax on Inspiratory Muscle Fatigue (IMF) in Swimming

Dr. GJohn Mullen Blog, Dr. John Mullen, Latest&Greatest, Training 2 Comments

1. Please introduce yourself to the readers (how you started in the profession, education, credentials, expertise, etc)  I’m a Sport and Exercise Scientist and a Senior Lecturer in Sport and Exercise Physiology at the University of Portsmouth, UK. I gained both my PhD (2007) and MSc (with distinction, 2001) from Brunel University, UK, and my BSc (Hon) from Luton University …

Comparing Sprint and Strength Training Methods|

Comparing Sprint and Strength Training Methods

Dr. GJohn Mullen Blog, Competition, Dr. John Mullen, Latest&Greatest, Training 2 Comments

Resistance training is a common mode in dry-land to enhance out of water strength. Despite the lack of correlation between out of water strength and in water strength, many programs have found anecdotal success with resistance training. This is likely due to poor methods correlating in water strength and poor resistance training programs. Moreover, most studies comparing resistance training have …

Do I Have Core Strength?

Do I Have Core Swimming Strength?

Dr. GJohn Mullen Blog, Dryland, Latest&Greatest, Training Leave a Comment

TAKE HOME POINTS FOR CORE STRENGTH IN SWIMMERS Core strength is plane dependent. Core strength is activity dependent. Core strength can vary with training volume, load, etc. I’ve received a lot of emails recently regarding core strength, specifically how to test for core strength and tell if someone has enough “core strength for swimming”. Now, there are numerous methods for testing …

Friday Interview: Jernej Kapus Discusses Breathing

Friday Interview: Jernej Kapus Discusses Breathing

Dr. GJohn Mullen Blog, Competition, Training 1 Comment

1. Please introduce yourself to the readers (how you started in the profession, education, credentials, experience, etc.). I am coming from Ljubljana, Slovenia. I’m an Assistant Professor at the University of Ljubljana, Faculty of Sport. I spent most of my childhood in competitive swimming. My swimming career was ended during the third year of study at the University of Ljubljana, …

Core Stability Improves Throwing Velocity

Core Stability Improves Throwing Velocity

Dr. GJohn Mullen Blog, Competition, Latest&Greatest, Training Leave a Comment

Core stability and strength are thought to improve performance in various sports. In handball, the thrower is believed to use their core during maximal throwing performances. This study looked at the results of core training on throwing velocity performance. What was done Twenty-four female high-school handball players (16.6 years) were divided into a sling exercise training (ST) or a control …

Dynamic Core Strength Correlated with Ground-Based Performance

Dynamic Core Strength Correlated with Ground-Based Performance

Dr. GJohn Mullen Blog, Dryland, Latest&Greatest, Training Leave a Comment

Though many feel core strength is essential for athletes, measuring this strength is not well understood. This study attempted to analyze the impact of dynamic core strength on performance and find a measurable field test. What was done Twenty-five Division I collegiate football (~19.0 years) players performed medicine ball throws (forward, reverse, right, and left) in static and dynamic positions. …