The Future is Light John Cronin AUT University, Auckland NZ - PowerPoint PPT Presentation

WEARABLE RESISTANCE TRAINING The Future is Light John Cronin AUT University, Auckland NZ

Wearable Resistance (W (WR) Novel - No!

Wearable Resistance Novel - No!

Wearable Resistance Novel - No!

Wearable Resistance – Novel Technology Light Variable Resistance Training - LVRT

Wearable Resistance Training

Wearable Resistance

THE BACK STORY Action without knowledge is dangerous. Knowledge without action is useless.

Schedule/Course Content Theory Content Practical Content 1. Introduction Getting to know the technology Six load orientations 2. Resistance training - overloading Reinforce concepts of loading: ABCs 3. Optimising transference – Neural Qualitative movement analysis specificity Skill acquisition and coaching 4. Metabolic specificity How endurance athletes are using it 5. Technique and injury concerns Prehab - movement variability and warm-up Injury resistance and movement Specific exercises for injury resistance variability Case study and Exogen injury myth WR and injury rehabilitation 6. Training/Maintaining/Detraining Smart training sessions adding WR to current training 7. Programming/Periodisation The principles of training (5) Jumping, running and sprinting Acute and chronic training variables research Specific skill and sport development Program example 8. Trainer of the future Personalised Exogen profile - team setting.

Schedule/Course Content Theory Content Practical Content 1. Introduction Getting to know the technology Six load orientations 2. Resistance training - overloading Reinforce concepts of loading: ABCs 3. Optimising transference – Neural Qualitative movement analysis specificity Skill acquisition and coaching 4. Metabolic specificity How endurance athletes are using it 5. Technique and injury concerns Prehab - movement variability and warm-up Injury resistance and movement Specific exercises for injury resistance variability Case study and Exogen injury myth WR and injury rehabilitation – RTP/RTA 6. Training/Maintaining/Detraining Smart training sessions adding WR to current training 7. Programming/Periodisation The principles of training (5) Jumping, running and sprinting Acute and chronic training variables research Specific skill and sport development Program example 8. Trainer of the future Personalised Exogen profile - team setting.

Schedule/Course Content Theory Content Practical Content 1. Introduction Getting to know the technology Six load orientations 2. Resistance training - overloading Reinforce concepts of loading: ABCs 3. Optimising transference – Neural Qualitative movement analysis specificity Skill acquisition and coaching 4. Metabolic specificity How endurance athletes are using it 5. Technique and injury concerns Prehab - movement variability and warm-up Injury resistance and movement Specific exercises for injury resistance variability Case study and Exogen injury myth WR and injury rehabilitation 6. Training/Maintaining/Detraining Smart training sessions adding WR to current training 7. Programming/Periodisation The principles of training (5) Jumping, running and sprinting Acute and chronic training variables research Specific skill and sport development Program example 8. Trainer of the future Personalised Exogen profile - team setting.

WEARABLE RESISTANCE TRAINING The Why? Reason 1 - Mechanics.

Developing Strength/Force Traditional RT Force = m * a

Developing Strength/Force Light Variable RT Force = m * a

Inertia In Weight = ~1200 N Weight = ~950 N 120 kg 95 kg How much force is needed to get them airborne?

In Inertia ↑ Inertia by adding mass = ↑muscular work or force Overload Principle 1: Adding mass

Rotational In Inertia x y y m 0.1 I = mr 2 m 1 m 0.1 m 2 m 0.1 m 3 m 0.1 m 4 m 0.1 m m 5 0.1 n =  2 = 2 + 2 +    + 2 + 2 I m m r m r m r m x r r i 1 1 2 2 n - 1 n - 1 n n i = i 1

Rotational In Inertia B A Overload Principle 2: Placement

Rotational In Inertia vertical axis through y center of mass Horizontal m 1 m 2 m 3 m 4 m 5 axis through 0.1m 0.1m 0.1m 0.1m 0.1m 0.1m center of mass x x n =  2 = + +    + + 2 2 2 2 I m m r m r m r m r r y i 1 1 2 2 n - 1 n - 1 n n i = i 1 I y-y = (2.0kg)(0.1m) 2 + (2.0kg)(0.2m) 2 + (1.5kg)(0.3m) 2 + (1.5kg)(0.4m) 2 + (1.0kg)(0.5m) 2 = 0.725kgm 2

Rotational In Inertia • Rotational inertia of limb loaded mid-femur m 1 m 2 m 3 m 4 m 5 0.1m 0.1m 0.1m 0.1m 0.1m 0.1m Load (gm/oz) Rotational Inertia % Increase 200/7 0.743 2.42 400/14 0.761 4.73 600/21 0.779 6.93 800/28 0.797 9.03 1000/35 0.815 11.04

Rotational In Inertia • Rotational inertia of limb loaded distally m 1 m 2 m 3 m 4 m 5 y 0.1m 0.1m 0.1m 0.1m 0.1m 0.1m Load (kg/oz) Rotational Inertia % Increase 200/7 0.775 6.45 400/14 0.825 12.1 600/21 0.875 17.1 800/28 0.925 21.6 1000/35 0.975 25.6

Load Ori rientation Refers to the specific positioning of a single load on the body. The specific orientation effects movement outcome significantly, especially placement of the heavier belly end. INSERTION BELLY

Load Ori rientation – Rotational In Inertia B A Overload Principle 3: Orientation

Load Ori rientation – Rotational In Inertia A B Overload Principle 3: Orientation

Load Ori rientation – Rotational In Inertia B A Overload Principle 3: Orientation

Velocity of f Movement Muscular Work – Kinetic Energy KE = ½m.v 2 = ½ 100 X 0.58 2 = 50 x 0.34 = 17.4 kg.m.s Work-Energy Relationship KE = ½m.v 2 Trained Untrained = ½ 1.0 X 6.1 2 Joint Range Time Velocity Range Time Velocity = 0.50 x 37.2 Action (deg/s) (deg/s) = 18.6 kg.m.s Ankle Ext. 73 0.045 1622 56 0.075 746 (Squat data with well trained lifters Knee Ext. 32 0.045 711 6 0.075 80 Zink et al, 2006, JSCR) Hip Ext 59 0.06 983 32 0.075 426

Velocity of f Movement Muscular Work – Kinetic Energy KE = ½m.v 2 = ½ 100 X 0.58 2 = 50 x 0.34 = 17.4 kg.m.s Work-Energy Relationship KE = ½m.v 2 = ½ 1.0 X 6.1 2 = 0.50 x 37.2 = 18.6 kg.m.s Overload Principle 4: Velocity of movement (Squat data with well trained lifters Zink et al, 2006, JSCR)

Lin inear and Angular Motion I = mr 2 Torque = turning forces Linear Linear Rotational/Angular W = ½m.v 2 T = I ⍺ F = ma A = v/t ⍺ = ⍵ /t Rotational/Angular ⍵ = ⍬ /t V = d/t W = ½I. ⍵ 2

Buil ilding the Evidence Base Rotational Workload

Mechanical Overload Vest = Vertical Loading Limb = Rotational Loading

Wearable Resistance in Action

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Research/Questions john.cronin@aut.ac.nz

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