Is the risk coefficient of parachuting high?

Relatively speaking, parachute is far from everyone's imagination.Especially the two -person parachuting that ordinary people can experience, the safety factor is relatively high.From the data alone, the rate of parachuting death was about one hundred thousand.And most of the accidents occur in single -person skydiving players holding photos.A double skydiving experience and safety coefficient depends on the professional level and equipment of the parachute base where you go.

From the perspective of big data around the world, parachute is a relatively high safety exercise. The safety factor is about the same as you go to the amusement park to play roller coasters!If it is not safe, it will not gradually evolve commercialization if it is not safe.The parachute contains a three -layer emergency protection mechanism. The first layer is the main umbrella, the second layer is a spare umbrella, and the third layer is an automatic umbrella.

Will there be a sense of weight jump?

In fact, during the entire skydiving process, there are two places a sense of centrifugation (weight loss) will be particularly strong:

1The process of rising planes

Most of the time when the plane rises (the aircraft rises (the aircraft rises (the aircraft is rising (the aircraft is rising (most of the time is stable (10-15Around minutes), it will always keep a certain amplitude flying up, but occasionally adjusts the angle according to height and wind direction.For example, the amplitude of the tilted upward becomes larger, turning left or right, etc. When the moment the change is changed, it will feel a centrifugal force.

The feeling of centrifugation is very short, just as the bus brakes is as short as possible, and the one comes quickly. You just feel the centrifugal power. The fear of the fear has not had time to surge.Leave3Second, the stimulant before jumping is beautiful.

2, Before jumping out of the cabin5Second:

This is better to understand that people change from a relatively static state to a state of a fast fall (200kilometer/ /Hour, that is, per second50Mi), "Acceleration" is still very strong, especially with psychological changes. The feeling of centrifugation is more strong.Your heart will be close to your back, you will involuntarily hold your breath, because you will feel better.

wait5After the second, you will completely get away from that feeling (relatively uniform speed), but at that time you will be a little nostalgic. The bloodline is sprayed. Don't be too cool!

5000How long does it take for the rice parachute to land?

5000Mi is the most common height of military skydiving and special forces. It is also the height that some very popular and extreme athletes like to try.From this high skydiving, the landing time is usually in6About minutes.However, the specific time still depends on factors such as airflow, weight, wind speed, and parachute area.During the parachuting process, the skydiver needs to adjust the landing speed and direction in a timely manner according to his own experience and weather conditions to land smoothly.

1. What is the price of surfing board

According to big data, surfing, Camping, and fishing have become the new three pets of "bankruptcy consumption" in the post -90s.According to the public information of the surfing world, the global surfing board sales exceeded 400,000 yuan each year.Compared with other equipment demand, there are relatively few equipment required for surfing.There is a set of surfing clothes, a surf panel, a foot rope, etc., which can basically go to the sea.So what is the price of surfing board?

The use of surfing boards, the size of the specifications and materials determine everything. Generally, there are generally tens of thousands of foreign ones. There are no tens of eight or nine thousand or not. The domestic ones are generally cheaper.Not bad.

2. How to buy surfing boards

After a brief understanding of the price of the power surfboard, let's take a look at how to buy the surfboard.

1. Weight and technology:The heavier weight, the larger the board, 60kg: 7.2-8.0 feet, 70kg: 7.8-8.6 feet, 80kg: 8.2-9.2 feet, 90kg: 8.6-10.0 feet.The larger, such as more than 7.8 feet.

Unit conversion: 1 feet = 30.48 cm, 1 -inch = 2.54 cm, such as 8 feet 6 boards, equal to 8*30.48 6*2.54 = 259.08 cm.The difference between the board and the 9-foot board 12-6 = 6 inches = 15.24 cm

2, wave condition:The large waves are used to use small plates, and small plates are flushed.

3. Material:It is mainly divided into inflatable boards and glass reinforced plates. The inflatable plate is mainly drawn with brushed substrate for core materials. The price is cheap and easy to carry. After inflatable, it is the same as the hard plate as the hard plate. After dual pressure reinforcement, it is not easy to break and will not leak air.The cost of glass fiber reinforcement plates will be higher. The mainstream is to use EPS to foam as the inner core. The glass reinforcement bottom is wrapped in two Levels. The epoxy resin is applied to make the plate body tightly pulling force, and it is more abrasion and not easy to break.

4, arc:The novice buying board must find the arc, the arc runs fast, it is better to do it, it is more suitable for novice.

5. board head:The head of the board affects the appearance. It is more stable when riding a little, and the pointed movement is lighter and more flexible.

6. Thick body body:The thicker the better, the stability is high, the speed will be slower, and the turn will be slightly difficult.The thinner the waves, the more difficult to chase the waves. It must be better on the steeper wave wall, but the speed is faster and the turning is easy.

The role of sports shoulder guard

Sporty shouldersThe main role is to support and protect the shoulders and reduce the damage or disease caused by the shoulder.At the same time, sports shoulders can also play a role in preventing cold and warmth.

However, the most important thing for sports shoulder guards is not to use during exercise, but later protection and protection after our shoulder injury.We are most often divided into three Levels of sports shoulders: the first -level shoulder -shoulder shoulder guards are mainly developed and developed for some sprains of shoulder sprains.The second -level protective shoulder guards are mainly targeted at diseases such as ligament loose and pain.Three -level protection is generally equipped with strong support items such as aluminum strips, which are mainly worn for shoulder injuries.

Movement dislocation and prevention

1.

The elbow joint is dislocated, and it should be kept quiet, do not move, and do not rub the injured parts.First of all, in order to avoid injuries again, you should sit down or lie down to check whether there are other wounds to keep warm and prevent shock. Usually the sitting position is most comfortable.The fixed dislocation site is the best way to reduce pain.

2. Want and ask

The wounded was sitting, and the assistant held his upper arm as a confrontation traction.The therapist holds the wrist of the wounder with one hand, continuously traction towards the original deformity direction.Joint reset.However, if rescuers are not very familiar with bones and cannot judge whether the joint dislocation is combined with fractures, do not easily implement the reset of elbow joint dislocation.

3. Do you need to go to the emergency department

When the elbow is dislocated, it should be taken to the Hospital immediately.At the same time, you can bend the elbow into right corners, hold the forearm and elbow with a triangle scarf, and hang it on the neck.If there is no rescue before, the wounded is judging by the joints according to the injury of the elbow joint. Do not force the injured limb straight at the semi -extended position to avoid causing greater damage.You can use a normal arm to unbutton the buckle, use the placket to hold the injured forearm from the bottom up, tied to the neckline, so that the injured elbow joint is fixed on the chest, and then went to the Hospital for treatment.

4. Team doctor suggestion

After dislocative joints, it takes a certain period of time to recover after reset. During this time, try not to be frequent or moved by the injury to the earth's activity.Inappropriately premature and frequent joint activities will cause obstacles to the joint capsule and ligament repair process, cause the joint capsule to relax, and become the habitual dislocation of the joint, which is even more troublesome.

Method of preventing dislocation

For exercise damage, prevention is more important than treatment. The following editors provide several methods to prevent dislocation:

1. Be careful before the activity to prepare activities, such as doing some surround and stretching activities so that all joint parts can be sufficient activities.

2. Before the activity, check whether the sports equipment is firm and whether the venue is flat.

3. Protection should be taken during activity, especially to strengthen the protection of injured parts.

4. Do your best, do some sports activities that are suitable for your physical strength, and never do dangerous movements that cannot be done.

5. To avoid the direct collision of violence as much as possible, do not jump directly on the hard land (cement field).

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1. What is the nature of power surfing board

Power Surfboards are entertaining.

The power surfing board belongs to the new type of motion equipment, especially the power surfing board that uses engine power that can be rushed on the sea or can drive on the calm water.Including hull components, power devices, manipulating handles, and main rear wing, the hull component is a flat -elliptical streamlined hollow structure. The middle position above the hull component is equipped with a large cover.In the area, the head of the hull component is equipped with a diversion cover. The manipulating handle is connected to the diversion cover by a Tube Tube. The tail under the hull component is equipped with a main tail wing.EssenceThe power device uses gasoline fuel, and has a control switch on the operating handle. It is operating and entertaining during surfing.

2. What is the biggest load of power surfing board?

The power surfing board is made of new composite materials. The streamlined hull is beautiful and fashionable. The controllers are also equipped on the hull, the electronic ignition switch button, and the throttle controller.So do you know what is the biggest load of power surfing board?

The material of the power surfing board determines that its load will be greater than ordinary surfing boards. Generally speaking, the load of the power surfboard is 180 kg.

The above is the introduction of what the nature of the power surfing board and the biggest load of the power surfing board. I hope to help you. There are many related knowledge in the homepage. Welcome to view.

Why war warm up before exercise

Heating before exercise can increase the activity of the joints, improve the core temperature of the body, awaken muscles, and make the muscle contraction and relaxation more efficient.In addition, warm -up will effectively reduce the phenomenon of joints, muscle sprains, and strain during exercise.Here are some warm -up movements. Before exercise, remember to do a few groups:

10 major actions of sports warm -up

Neck rotation

Mobilize the head back and forth to pull the neck muscles.A total of 3 groups need to be performed in a total of 10 times, and each group is allowed to have a rest time of 5 to 10 seconds.

C -shaped

Stand upright, stretch your arms, and draw a movement of a C from high to low.A total of 3 groups need to be performed in a total of 10 times, and each group is allowed to have a break of 10 to 30 seconds.

Side arm movement

Holding a light dumbbell with a light weight or not taking it, slowly swinging his arms with an angle.A total of 3 groups need to be performed in a total of 10 times, and each group is allowed to have a break of 10 to 30 seconds.

Hip joint rotation

The upper part of the body is leaning forward, the waist is bent down 90 degrees, the body is up, bending to the left to right, and stretching.A total of 3 groups need to be performed in a total of 10 times, and each group is allowed to have a break of 10 to 30 seconds.

Squat

The main activity of this action is the knee joint. When doing this action, pay attention to the body not to tilt forward, while the squatting action is mainly slow.A total of 3 groups need to be performed in a total of 10 times, and each group is allowed to have a break of 10 to 30 seconds.

Arrow squatting

When squatting in arrows, we must let our hips and legs work, feel the tension of the hip and leg muscles, and keep the back straight and the abdomen tightening.Don't let our knees exceed our toes, and try to keep our legs bending 90 degrees.

Hip Running

Picking the hip Running can fully stretch the thigh muscles, and help the second half of the Running posture in the Running gesture.You can do one -foot exercise in place first, use the muscles on the back of the thigh to lift the heel backwards, touch it with your hips, and then try to take turns or move forward easily.

Lift your legs after alternating prone

Lift your legs after leaning can help us activate the muscles of the hips and legs, and can also help us activate the abdomen muscles.First lying down on the mat, or keep the tablet support, and then lift our legs back alternately.

Open -closing jump

Open -closing jump can help our body quickly heating up in a short period of time, allowing us to be in a high degree of excitement, and at the same time, it will also allow our cells to be moved in the whole body. This is very good for our next training. At the same timeIt will also reduce the chance of injury when we do some high -intensity movements.The opening and closing jump must control the speed, do everything you can, keep the movement speed, and keep your arms and legs straight, and make our movements as much as possible.

High -lifting

The last action is to recommend a faster training movement to everyone, that is, raising legs.Raise your legs with both feet.Try to raise your own limit.A total of 3 groups need to be performed in a total of 10 times, and each group is allowed to have a break of 10 to 30 seconds.

Warm -up precautions

Water supplement

Pay attention to the water before warm -up, especially under hot and humid weather, and can also prevent cramps and heat stroke.

Warm -up

When warm -up, pay attention to gradual progress. The best exercise amount starts from small, gradually increases to achieve the effect of sweating.Don't be too severe to avoid fatigue.

Warm -up time

The time of warm-up exercise is 10-14 minutes. Depending on age, personal constitutional differences, seasons and temperatures, the time required for warm-up exercises will be different.When the weather is cold, the warm -up time should be extended to 20 minutes.It should not be rushed to take off the sports jacket and trousers before you sweat, which will hinder the effect of warm -up.

In fact, every movement of warm -up is very knowledgeable, and it is by no means just stretching at will, and the wrong movement will even cause muscle breaks or joint damage. It is better not to do it.The real warm -up is to keep the muscles soft, and then increase the range of the joints, so that we can make more correct Running or movement postures.Want to become flexible, strengthen the sense of balance, and no longer fall easily. Don't forget to warm up before exercise!