Medellín, 22, 23 y 24 de Agosto 2018

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II

• Genadijus Sokolovas, Ph.D.,

• Global Sport Technology, Inc

•www.globsport.org

•web@globsport.org

Control of Biomechanical Parameters for Elite Level Athletes

•The following information is collected and presented on the DVD:

–Velocity (m/s) measured 60 times/second–Force (kg) measured 60 times/second

SWIM POWER TEST

SWIM POWER DATABASE

• 65 Olympic Champions in swimming:• Michael Phelps, Katie Ledecky, Ryan Lochte, Nathan Adrian,

Simone Manuel, Natalie Coughlin, Aaron Peirsol, Rebecca Soni, Kousuke Kitajima, Ruta Meilutyte, Kathleen Baker, Katie Meili, Jason Lezak, Ous Mellouli, Taewan Park, Liu Zige, Dara Torres, Brendan Hansen, Ian Crocker, and others.

• More than 85 Olympic Medalists in swimming.

• About 10,000 elite level and age group swimmers from 125 countries.

BENEFITS FROM THE SWIM POWER TEST

• Real time velocity measured 60 times/second at every point of the swimming cycle synchronized with underwater video

• Detailed analysis of swimming technique

• Drills to improve swimming technique

• A DVD with underwater video overlaid with swimming velocity curve

TESTING PROTOCOL

• The testing protocol includes three 25 meters efforts at race pace in various positions unique to the specific stroke analyzed:– Pull with buoy

– Kick

– Swim

PULL TEST

KICK TEST

SWIM TEST

TESTING DIFFERENT SWIMSUITS USING SWIM POWER TEST

INDIVIDUAL SWIM POWER SESSION

• Side and front view video with overlaid swimming velocity curve

• Multiple tests with immediate video feedback

• Real-time stroke corrections

• Digitizing the stroke

• Evaluating drag forces for different swim suits

FEEDBACK

BUTTERFLY SWIMMING VIDEOS

BUTTERFLY ANALYSIS

BACKSTROKE SWIMMING VIDEOS

BACKSTROKE ANALYSIS

BREASTSTROKE SWIMMING VIDEOS

BREASTSTROKE ANALYSIS

FREESTYLE SWIMMING VIDEOS

FREESTYLE ANALYSIS

Analysis of Swim Power Tests

Step 1:

Identifying strengths and weaknesses of each swimmer based on changes of swimming velocity during the swim cycle.

Step 2:

Detailed analysis of swimming technique by comparing individual testing results with elite level swimmers.

Step 3:

Developing customized swimming drills to improve weaknesses and maintain strengths.

Answers from Swim Power Tests

• Mistakes at various phases of swimming stroke:• Am I losing speed at the beginning, in the middle or at the end of the stroke?

• How much and for how long am I losing speed at various phases of the stroke?

• Breathing mistakes:• Am I losing speed during the breathing phase?

• Am I losing speed at the beginning, in the middle or at the end of the breathing phase?

• How much and for how long am I losing speed during the breathing phase?

Answers from Swim Power Tests

• Underwater mistakes:• Is my down-kick stronger than my up-kick?

• Am I bending knees too much during underwater kicking?

• How much and for how long am I losing speed in transition from up-kick to down-kick and vice versa?

• Am I staying too long or too short underwater after the turn?

• How long should I stay underwater? When my underwater speed drops below my average swimming velocity?

Answers from Swim Power Tests

• Head positon mistakes:• Am I losing speed due to low or high head position?

• Am I losing speed due to unstable head position?

• Body position mistakes:• Am I losing speed due to incorrect body position?

• Am I losing speed due to unstable body position?

• Am I losing balance when swimming?

How to Fix Mistakes in Swimming Technique?

• Over the last 10 years, we developed hundreds of swimming drills to improve swimming technique.

• Based on individual mistakes in swimming technique, customized drills are selected for every swimmer.

• Drills are prioritized to reach the maximum benefits from Swim Power tests.

•Velocity = Stride Rate * Stride Length

• Stride Rate:

•Ground Time

•Air Time

• Stride Length:

•Ground Time

•Air Time

RUNNING BIOMECHANICS(Summary from R.Mann, G.Sokolovas, etc)

SWIMMING VS RUNNING EFFICIENCYWorld Records Analysis

Swimmers Males Runners Males

100/50 = 2.243 400/200 = 2.242

200/100 = 2.174 800/400 = 2.345

400/200 = 2.158 1600/800 = 2.211

RUNNING BIOMECHANICSDr. Ralph Mann

• Increase horizontal force.

•Minimize vertical force:

•Vertical force must be generated to support body against gravity and air phase in running

•Eliminate lateral force:

•Lateral force can be avoided

ELITE LEVEL SPRINTERSAT 60 METERS

•Max Velocity:

•12 meters/ sec

•Ground Time:

•0.08 sec

•Air Time:

•0.123 sec

Max Vel: 12 m/secGround Time: 0.08 sec

Air Time: 0.123 sec

Max Vel: 9.5 m/secGround Time: 0.10 sec

Air Time: 0.103 sec

Max Vel: 7 m/secGround Time: 0.12 sec

Air Time: 0.08 sec

ELITE LEVEL SPRINTERSDr. Ralph Mann

•The best sprinters run at:

•Longer stride (up to 2.6 meters)

•Higher rate (up to 5 steps/ sec)

•Ground time very short (up to 0.08 sec)

•Air time is the same for fast and slow sprinters (around 0.12 sec)

RUNNING MECHANICS FOR ELITE LEVEL SPRINTERS

•The best sprinters run:

•Body in more vertical position

RUNNING MECHANICS FOR ELITE LEVEL SPRINTERS

•The best sprinters run:

•More thigh flexion (up to 240 degrees)

RUNNING MECHANICS FOR ELITE LEVEL SPRINTERS

•The best sprinters run:

•Less thigh extension (up to 170 degrees)

RUNNING MECHANICS FOR ELITE LEVEL SPRINTERS

•The best sprinters run:

•Less calf extension (up to 140 degrees)

RUNNING MECHANICS FOR ELITE LEVEL SPRINTERS

•The best sprinters run:

•More bent knees during recovery (around 35 degrees)

HORIZONTAL RUNNING SPEED

•Horizontal speed is related to:

•Higher foot vertical speed at impact on the ground (Front Side Mechanics)

•Stability of foot, lower leg, upper leg, and trunk

•Production of high levels of vertical force

•Shorter ground time with efficient stride length

THANK YOU FOR YOUR ATTENTION!