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PFI Basic Freediver Course

Basic Freediver Program

Nick Fazah

on 19 August 2012

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Transcript of PFI Basic Freediver Course


Liability & Assumption of Risk
Medical Form FREE DIVING
SAFETY BREATHING EQUIPMENT Physics and Physiology Things to do for ears

Flexibility of schedule

Everyone learns at their own pace

Things to avoid (caffeine and dairy)

Things to add (Water, Salt & Mucinex) Things to think about for class Freediving Supervision Direct supervision
One Up / One down
Wait 30 seconds and until recovery breathing is complete
Are you OK?

#1 Goal is to protect the airway! Safety for Constant Ballast Be prepared
Be close enough to protect the airway
Timing & Style
3ft/s or 1m/s descent & ascent
Body language indications
Know which direction your buddy is headed
90% of hypoxic problems happen at the surface
How to signal need help Safety for Static Apnea Agree on Signal
Watch for signal as you tap
Watch for the following:
-Weak signals
-Loss of airway control
Time signals
Target Time
Starts 1min < Target Time
30 seconds until Target
Every 15 sec > Target Time
Signals agreed upon
Weak or ‘held’ signals
Two strikes & you’re OUT! Safety for Dynamic Shadow above with flutter board

Watch for the following:
Body style
Loss of airway control
Speeding up Blackouts & Near Blackouts Signs and symptoms of LMC/Near Blackout/Samba

-Emotional instability
-Loss of Motor Control
-Convulsions Symptoms
-Dizziness or Confusion
-Tingling or Numbness
-Loss of Motor Control
-Visual Disturbances Blackouts & Near Blackouts Signs of a Blackout

-Loss of respiratory control
-Loss of Motor Control
-Convulsions Depth vs Apnea Hypoxia How does hypoxia present itself during a static dynamic breathold?
Symptoms present slowly
Gives you time to notice the symptoms

How does hypoxia present itself during a constant ballast dive?
Fast reduction of water pressure on ascent
Symptoms come on very fast and may not be noticed Assisting an LMC at the surface

Be prepared
Remain close
Provide assistance
Talk & encourage
Remove mask if possible Blackouts & Near Blackouts Assisting a B/O on the surface

At the surface
Support / weights
Protect airway
Remove mask
3 x Blow-Tap and Talk
AR if necessary Blackouts & Near Blackouts Respiratory muscles Stomach / Diaphragm
Most important
Extends out
4 X practice w/hold (1>)

Chest / Intercostals
Internal & external
Lower vs.. Upper chest
4 X practice w/hold (1 > 2)

Shoulder / Subclavian
4 X practice w/hold (1 > 2 > 3) Correct breathing cycles 1.)Normal Ventilations (1min)
Relaxed & slow

2.)Ventilations (3.5min)
Diaphragm & lower chest
SLOW EXHALATION 3.)Purging cycles (X5)
Deep / fast exhalations
Removes CO2

4.)Peak inhalation
(diaphragm>chest>shoulders) Recovery breathing Job isn’t done once at surface
Six most important breaths
Breath from Upper Chest
Hook Breaths vs.. Cleansing Breaths
Static RB = 6C
Depth RB = 3H/3C Anxiety stimulus Real causes of stress / anxiety
Equalizing issues
Name a few more…

Imagined causes of stress / anxiety
Name a few more… Stress reduction Training

Preparation & prevention

Skills practice

In-water comfort Freediving masks Volume & Profile

Black skirts vs clear

Mask straps (remove neoprene straps)

Proper maintenance Freediving fins Bi-fins vs.. Mono-fins

Full-foot vs. Open-heeled
Stiffness of foot pocket
Proper fitting

Carbon Fiber vs. Plastics
Determining stiffness

Special Features
Fin keepers Freediving snorkels KISS principle

Proper placement

REMOVE SNORKEL during descent Freediving wetsuits John & Jacket vs. One-piece

Recreational vs. Competitive
Nylon outside
SCS (smooth composite skin)

Neoprene Materials
Suit thicknesses (3mm-7mm)
Yamamoto 45 vs. 38
Buoyancy properties Freediving wetsuit accessories Wetsuit Features & Maintenance
Face/Ankle/Wrist Seals
Ear Holes
Suit Lube & Proper Donning
Proper Maintenance

Wetsuit Accessories
Gloves Freediving weight belts & weights Rubber vs. Nylon
Bullets & flat lead
Buoyancy vs. Trim
Proper Placement
Below hip bone
Crotch Straps Floats and bouyancy systems Diver Below Flag
Red square with white diagonal line through it
Tells boaters that divers are under water and to stay away
Alpha Flag
Blue and white flag
Floats & Line
Adequate Buoyancy
Thick enough to grab
Adequate weight Pressure & Volume Depth ATA Volume
0’ 1 ata 1 cuft
33’ 2 ata 1/2 cuft
66’ 3 ata 1/3 cuft
99’ 4 ata 1/4 cuft Boyles law

Pressure increases / volume decreases

Pressure decreases / volume increases Equalization techniques Valsalva vs. Frenzel Equalization

Volume change decrease Pressure related injuries Sinus Squeeze
Barotitis Media
Reverse Block
Mask Squeeze
Perforated Tympanic Membrane Pressure related injuries Positive> Safety
Neutral> 10m/33ft
Negative > Technique

Effects on Buoyancy
Body Type
Lung Volume
Wetsuit Thickness
Weights & Belt
Water Salinity (Salt, Fresh, Red Sea) Pressure related injuries Tables
Static Apnea
dry vs wet
Dynamic Apnea

Any in water training must be conducting with a BUDDY WHO IS TRANINED IN FREEDIVING RESCUE TECHNIQUES Types & causes of blackouts Recovery Blackout
Remember recovery breaths

Ascent Blackout
Used to be called Shallow Water Blackout
90% happen at or after surfacing
Diving day is done after LMC or Blackout.
Freediving Tables & Scuba & flying Finish Mammalian dive reflex Blood Shunt


Increased Red Blood Cells

Thoracic Filling EAST COAST DIVERS

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