Connect with us

Thai Life

Light shined on blackouts – Phuket Diving

Legacy Phuket Gazette

Published

 

on

Light shined on blackouts – Phuket Diving | The Thaiger

PHUKET: The death of PADI professional and freediving enthusiast Denis Lipatov last month brought into sharp focus the specter that continues to haunt the sport of freediving – shallow water blackouts (click here for article).

Even the term “shallow water blackout” is rife with confusion within the freediving community, and even more so within the scuba diving community and general public, according to Richard Wonka, Southeast Asia representative of the International Association for the Development of Freediving (AIDA).

The term, often used to describe a variety of freediving accidents, has for many become a catch-all that fails to adequately describe the circumstances leading to an unconscious freediver. Rarely do freediving accidents lead to fatalities. In fact, taking the safety precautions that are taught in any freediving course make a staggering difference.

In an attempt to clarify and demystify shallow water blackouts, Divers Alert Network (DAN) recently developed a new terminology for blackout accidents. Most fall into three categories: duration induced blackout, ascent induced blackout and hyperventilation induced blackout.

Asking why we black out leads to an even more basic question… why do we have the urge to breathe? Most of us, professional scuba divers included, keep it simple: because we need oxygen – and for anyone but elite freedivers, that is simply wrong.

Without extensive training, we are not even aware of our oxygen levels, but we quickly register changes in our carbon-dioxide levels. The urge to breathe is actually the desire to exhale, rather than to breath in.

Normally, as we exhale we are breathing out vast amount of usable oxygen. However, that unmonitored supply of oxygen is exactly what keeps us conscious above and below the water’s surface.

Our carbon-dioxide level can give us clues to determine our oxygen supply, but reading these clues requires specialized training.

As we descend below the water’s surface the pressure of the water above us increases the partial pressure for oxygen, despite the actual amount of oxygen within our system remaining the same. So, effectively we can function on less oxygen than we could at the surface.

As we ascend, that partial pressure decreases, and though it was sufficient for maintaining consciousness at 20 meters, it is very possible to have used enough oxygen that the partial pressure will drop below the level needed to remain conscious at five meters, leading to a blackout.

Very simply, a person blacks out because the partial pressure of oxygen drops below a certain level.

This is what is described by the term ascent induced blackout. A blackout can also be caused by freedivers pushing beyond their duration limits and unsafely ignoring their body’s carbon-dioxide levels – duration induced blackout. Hyperventilation, which was once taught as a standard practice for increasing freediving times, is another major factor that can lead to a blackout – hyperventilation induced blackout.

Less than ten years ago, scuba diving agencies and their scuba diving instructors, taught hyperventilation as a method for freediving. I too was taught that rapid exhalation allowed me to increase the amount of oxygen I was able to fill my lungs with on my final breath.

This, like many other preconceived notions about freediving, is completely wrong. Hyperventilation simply down regulates the carbon-dioxide levels, which allows you to dive with lower levels of oxygen before your body’s alarm system starts to warn you of worrisome levels of carbon-dioxide.

“They [freedivers after hyperventilating] feel nothing, they feel no warning signs, they feel comfortable because they can not feel the carbon-dioxide increasing and they run out of oxygen without any warning signs,” Richard explains.

There is really only one thing that prevents a freediver from becoming a corpse – a trained buddy on the surface.

“I’ve had to pull a diver out of the water once when there was no sign of distress, no visible sign of anything and then suddenly he was out. I just saw him stop moving and sink to the bottom,” Richard says. It was later confirmed that he had used hyperventilation in an attempt to extend his bottom time.

Many of those who have died freediving alone (none have died during competitions) were not professionally trained, or vowed that “they know the risks, that’s why they are extra careful”.

“That is what every single freediver who has ever died performing the sport says,” Richard says.

“Denis had told me that on several occasions,” Richard said. Divers who utter the phrase are breaking the most basic freediving rule – never freedive alone.

As an untrained freediving enthusiast it is frightening to discover that I fall into this category. With no one wanting to go freediving, I have found peace in gliding above the corals at Ao San on a single breath. Aware of the risk and playing it safe by never going “too” deep or staying down for “too” long, it’s now clear that I simply had no idea what I was talking about.

“It is the most common rationalization of a very real risk, and it’s what everyone who has gone freediving alone and never came back thought. I’d wager very few people went out saying ‘I will go freediving without a buddy because I want to kill myself. Everybody thought they were staying safe, but they didn’t come back,” Richard warns.

— Isaac Stone Simonelli

Keep in contact with The Thaiger by following our Facebook page.

Archiving articles from the Phuket Gazette circa 1998 - 2017. View the Phuket Gazette online archive and Digital Gazette PDF Prints.

Click to comment

Leave a Reply

Your email address will not be published. Required fields are marked *

Thailand

21% of Thai teenagers are gambling

Greeley Pulitzer

Published

on

21% of Thai teenagers are gambling | The Thaiger

PHOTO: Gambling, local style, Rai Et, north-east Thailand – Pinterest

Early in October the Thai Health Promotion Foundation met to discuss the gambling situation in Thailand in 2019. Also present were the Centre for Gambling Studies, Stop Gambling Foundation and related groups.

The meeting was set up after a report revealed that more than half (57%) of the Thai population, or 30.42 million people, gamble. The director-general of the Centre for Gambling Studies at Chulalongkorn University shared the report, which was based on data from a survey of 44,050 people across 77 provinces.

The figure is an increase of 1.49 million people from 2017. While most Thai gamblers are of working age, 2.4% of the total were aged between 15-18 years. This means that 21% of that age group are gambling.

According to California’s Council on Problem Gambling, youth, like everyone else, gamble for many reasons, including entertainment; socialisation; competition; loneliness, and boredom; to get rich quick; to impress others; be the centre of attention; make new friends, and because winning provides an instant, temporary boost of confidence.

“The California Council on Problem Gambling lists depression as one reason youth turn to gambling, noting that depression can just as easily be an effect as a cause. This is especially important to note in a country like Thailand.”

In an article in The ASEAN Post, it was noted that in December 2017, Thailand’s Department of Mental Health (DMH) reported that an estimated one million teenagers are believed to suffer from depression, many of whom go untreated, with two million more are at risk, making upward of three million among a population of eight million teens then.

The DMH said that stress and anxiety may affect a student’s ability to concentrate and perform well at school, and they may show several warning signs, such as lack of attention, loss of interest in daily activities, lethargy, sadness, and sleeping issues.

“It is clear from studies that depression and gambling go hand-in-hand: the unfortunate case in Thailand is that it is affecting children too.”

SOURCE: The ASEAN Post

Keep in contact with The Thaiger by following our Facebook page.
Continue Reading

Bangkok

Professor: Military government too interested in tourism – not people’s welfare

Greeley Pulitzer

Published

on

Professor: Military government too interested in tourism – not people’s welfare | The Thaiger

A professor of Rangsit University has criticised the previous military government for focusing too much on tourism and not enough on the welfare of the Thai people. The professor was speaking at Chulalongkorn University at a seminar discussing street stalls and urban development.

She questioned the National Council for Peace and Order’s policy of clearing street vendors in all but a few areas such as Yaowarat and Khao San Road that mainly cater to tourists.

She claimed that the NCPO – in power since the coup of 2014 until this year’s election – was more interested in economic development through tourism than in the welfare of the public.

Having affordable street food options was not just about tourism, she said, it was vital for poor workers who have migrated from the countryside, adding that it was part of an informal rather than a formal economy.

“For years people had earned their living from selling goods and services, including food, on the streets.”

This in turn provided an affordable option to eat for workers who came to Bangkok on for large investment projects. The issue, she said, was not just about tourism but the wider economy that might benefit.

The professor noted that CNN had once called Bangkok the best place in the world for street food but this had changed with the sanitized food trucks that have appeared since stalls and vendors were banned from most areas.

The Thaiger notes that banning street vendors has divided the capital. Many are happy that the sidewalks are easier to navigate, but others – including tourists – have said that the lifeblood and character of the city has suffered.

SOURCE: Naew Na | ThaiVisa Forum

Keep in contact with The Thaiger by following our Facebook page.
Continue Reading

Chiang Rai

Journey back to Tham Luang in ‘The Cave’ – VIDEO

The Thaiger

Published

on

Journey back to Tham Luang in ‘The Cave’ – VIDEO | The Thaiger

PHOTO: Tom Waller on site during the filming of The Cave – AFP

Determined divers racing against time. Rising waters threatening lives. 12 teenagers and their soccer coach trapped inside for two weeks. A remote cave that most had never heard of.

The stuff of a Hollywood drama, except that it’s all true and happened in Chiang Rai last year. Now the first of several re-tellings of the story comes to the big screen in The Cave.

The ordeal in late June and early July last year had barely ended when filmmakers began their own race to get the nail-biting drama onto cinema screens. The first of those projects premiered at the start of October, when director Tom Waller’s The Cave showed at the Busan Film Festival in South Korea.

The film was shot over three months earlier this year and has been in post-production since then. The 45 year old Thai-British filmmaker says the epic tale of the Wild Boars (Mu Pa) football team was a story he simply had to tell.

“I took the view that this was going to be a story about the people we didn’t know about, about the cave divers who came all the way from across the planet.”

The 13 young men entered the Tham Luang cave complex after soccer practice and were quickly trapped inside by rising floodwater. The boys were forced to spend nine nights lost in the cave, whilst Navy Seal and other diver searched frantically, before they were spotted by a British diver.

It would take another eight days before they were all safe, against all odds, in a risky mission.

Waller was visiting his father in Ireland when he saw television news accounts of the drama.

“I thought this would be an amazing story to tell on screen.”

But putting the parts together after their dramatic rescue proved to be a challenge. Thailand’s government, led by the military NCPO, became very protective of the story, barring unauthorised access to the Mu Pa team or their parents. Waller often feared his production might be shut down.

His good fortune was that the events at the Tham Luang cave in Chiang Rai province had multiple angles and interesting characters. Especially compelling were the stories of the rescuers, particularly the expert divers who rallied from around the world. He decided to make a film “about the volunteer spirit of the rescue.”

Other people proposed telling the story from the point of view of the boys, and Netflix nailed down those rights in a deal brokered by the Thai government.

“I took the view that this was going to be a story about the people we didn’t know about, about the cave divers who came all the way from across the planet. They literally dropped everything to go and help, and I just felt that that was more of an exciting story to tell, to find out how these boys were brought out and what they did to get them out.”

Waller even had more than a dozen key rescue personnel play themselves.

Waller said they were natural actors, blending in almost seamlessly with the professionals around them, and helped by the accuracy of the settings and the production’s close attention to detail.

“What you are really doing is asking them to remember what they did and to show us what they were doing and what they were feeling like at the time. That was really very emotional for some of them because it was absolutely real.”

Waller says his film is likely to have a visceral effect on some viewers, evoking a measure of claustrophobia.

“It’s a sort of immersive experience with the sound of the environment, you know, the fact that is very dark and murky, that the water is not clear.”

“In Hollywood films, when they do underwater scenes, everything is crystal clear. But in this film it’s murky and I think that’s the big difference. This film lends itself to being more of a realistic portrayal of what happened.”

Some scenes were filmed on location at the entrance to the actual Tham Luang cave, but most of the action was shot elsewhere.

“We filmed in real water caves that were flooded, all year-round. It is very authentic in terms of real caves, real flooded tunnels, real divers and real creepy-crawlies in there. So it was no mean feat trying to get a crew to go and film in these caves.”

The Cave goes on general release in Thailand on November 28.

ORIGINAL ARTICE: Associated Press | Time.com

Journey back to Tham Luang in 'The Cave' - VIDEO | News by The Thaiger

PHOTO: Tom Waller – Associated Press/Sakchai Lalit

Keep in contact with The Thaiger by following our Facebook page.
Continue Reading

The Thaiger Newsletter

Keep up with all the day’s news. Subscribe here.

The latest news and information from Thailand.

* indicates required
ไทยแชมป์วอลเลย์บอลอาเซียนกรังด์ปรีซ์สนาม 2 รางวัลรายบุคคล | The Thaiger
วอลเลย์บอล1 week ago

ไทยแชมป์วอลเลย์บอลอาเซียนกรังด์ปรีซ์สนาม 2 รางวัลรายบุคคล

ตรวจหวย1ตุลาคม2562 ผลรางวัลที่ 1 เลขท้าย 2 ตัว 3 ตัว เลขหน้า 3 ตัว และรางวัลอื่น ๆ | The Thaiger
ตรวจหวย2 weeks ago

ตรวจหวย1ตุลาคม2562 ผลรางวัลที่ 1 เลขท้าย 2 ตัว 3 ตัว เลขหน้า 3 ตัว และรางวัลอื่น ๆ

ถ่ายทอดสดหวย 1 ตุลาคม 2562 ลุ้นรางวัลที่ 1 สลากกินแบ่งรัฐบาล | The Thaiger
ตรวจหวย2 weeks ago

ถ่ายทอดสดหวย 1 ตุลาคม 2562 ลุ้นรางวัลที่ 1 สลากกินแบ่งรัฐบาล

สีจิ้นผิงกล่าวสุนทรพจน์ ครบรอบ 70 ปีก่อตั้งสาธารณรัฐประชาชนจีน -ลิงก์ถ่ายทอดสด | The Thaiger
ต่างประเทศ2 weeks ago

สีจิ้นผิงกล่าวสุนทรพจน์ ครบรอบ 70 ปีก่อตั้งสาธารณรัฐประชาชนจีน -ลิงก์ถ่ายทอดสด

คลิปไฮไลท์วอลเลย์บอลเวิลด์คัพ 2019 นัดที่ 5 | The Thaiger
วอลเลย์บอล4 weeks ago

คลิปไฮไลท์วอลเลย์บอลเวิลด์คัพ 2019 นัดที่ 5

คลิปไฮไลท์ วอลเลย์บอลเวิลด์คัพ 2019 นัดที่ 1 | The Thaiger
วอลเลย์บอล1 month ago

คลิปไฮไลท์ วอลเลย์บอลเวิลด์คัพ 2019 นัดที่ 1

Paramount เตรียมรีเมค FACE/OFF หนังบู๊ระดับตำนาน | The Thaiger
หนัง1 month ago

Paramount เตรียมรีเมค FACE/OFF หนังบู๊ระดับตำนาน

ประยุทธ์ โต้ รัฐบาลไหนก็มีตำหนิทั้งนั้น “ถึงเวลาก็อ้างอย่างที่ผมอ้าง” | The Thaiger
ข่าวการเมือง1 month ago

ประยุทธ์ โต้ รัฐบาลไหนก็มีตำหนิทั้งนั้น “ถึงเวลาก็อ้างอย่างที่ผมอ้าง”

อารัมภบท รักฉุดใจนายฉุกเฉิน My ambulance ตอนแรก 6 กันยานี้ | The Thaiger
บันเทิง1 month ago

อารัมภบท รักฉุดใจนายฉุกเฉิน My ambulance ตอนแรก 6 กันยานี้

วอลเลย์บอลหญิงชิงแชมป์ยุโรป 2019 โฉมหน้า 4 ทีมตัดเชือกรอบรอง | The Thaiger
วอลเลย์บอล1 month ago

วอลเลย์บอลหญิงชิงแชมป์ยุโรป 2019 โฉมหน้า 4 ทีมตัดเชือกรอบรอง

บิ๊กไบก์หัวร้อน ตบหัวลุงพิการผัวะ ‘รถกูเป็นอะไร มีปัญญารับผิดชอบไหม’ | The Thaiger
ข่าวไทย1 month ago

บิ๊กไบก์หัวร้อน ตบหัวลุงพิการผัวะ ‘รถกูเป็นอะไร มีปัญญารับผิดชอบไหม’

“มิน พีชญา”ทุ่มสุดตัว นัวผู้ชายเกือบสิบ ป่วยโรคติดเซ็กซ์ ใน”สองนรี” | The Thaiger
บันเทิง1 month ago

“มิน พีชญา”ทุ่มสุดตัว นัวผู้ชายเกือบสิบ ป่วยโรคติดเซ็กซ์ ใน”สองนรี”

ไฮไลท์ผู้เล่นตัวท้อป 8 ทีมสุดท้าย วอลเลย์บอลชิงแชมป์ยุโรป 2019 | The Thaiger
วอลเลย์บอล1 month ago

ไฮไลท์ผู้เล่นตัวท้อป 8 ทีมสุดท้าย วอลเลย์บอลชิงแชมป์ยุโรป 2019

เคาะแล้ว สนามโคราช จัดแข่งวอลเลย์บอลคัดโอลิมปิก | The Thaiger
วอลเลย์บอล1 month ago

เคาะแล้ว สนามโคราช จัดแข่งวอลเลย์บอลคัดโอลิมปิก

คลิปวงจรปิดฉาว อส.ชลบุรี ทุบเด็กแว้นนอนเจ็บคาเตียงโรงพยาบาล | The Thaiger
ข่าวไทย2 months ago

คลิปวงจรปิดฉาว อส.ชลบุรี ทุบเด็กแว้นนอนเจ็บคาเตียงโรงพยาบาล

Trending