How many swimming positions are there in swimming?

Everyone knows that swimming is very good for people’s health, and many people are keen on swimming now, so in this case, everyone has done some research on swimming. Many people are looking for their favorite postures when swimming in school, but they don’t know much about the specific and separable postures. Here are some specific introductions about swimming.

freestyle

One of the swimming events. In 1896, the first Olympic Games began to be listed as an official event. Freestyle is not limited by any posture, crawl is the fastest, and crawl has become the only posture of freestyle. Crawling is like crawling, that is, paddling with both arms alternately and kicking with both legs alternately. This kind of swimming posture has reasonable structure, small resistance and even speed, and it is the fastest and most labor-saving swimming posture in the world at present.

The basic technical characteristics of freestyle are that the human body is prone in the water, with its head and shoulders slightly higher than the water surface. When swimming in, the trunk rolls around the longitudinal axis of the body appropriately, and the arms take turns paddling to push the body forward. After the hand enters the water, the paddling route is S-shaped, and the breathing and paddling movements are coordinated. When the arm paddles hard, use the water flow to inhale in the valleys formed on both sides of the head.

breaststroke

Breaststroke is an ancient swimming style. According to records, as early as 2000 ~ 4000 years ago, China, Rome and ancient Egypt had similar swimming styles. On August 24th, 1875, the famous swimmer M Webb swam across the English Channel in breaststroke, which lasted for 21 hours and 45 minutes. In the early 19th century, breaststroke was the first position adopted in swimming competitions. However, due to the slow speed of breaststroke, there are fewer and fewer people who swim sideways, crawl and use breaststroke in the competition. It was not until the third Olympic Games in 1904 that breaststroke was separated from other postures.

butterfly stroke

During the period from 1924 to 1936, the biggest innovation of breaststroke was that after the stroke, the arms were no longer moved forward from the water, but the arms were moved from the air but the legs were still clamped by breaststroke, and the deformation of breaststroke-butterfly stroke appeared. In butterfly swimming, the body lies prone in the water, and relies on the powerful strokes of the arms and the wavy strokes of the legs to push the body forward. There is no fixed body posture.

backstroke

One of the swimming events. In 1900, the 2nd Olympic Games began to be listed as an official event. Backstroke includes backstroke and crawl backstroke. Reverse breaststroke is the earliest backstroke, which is similar to breaststroke in action and opposite in body posture. That is, the human body lies on its back on the water, and its arms paddle backwards from the head to the side. In the first few Olympic Games, the backstroke was held in an anti-breaststroke position. When backstroke, the body lies almost horizontally in the water, the chest naturally stretches in line with the abdomen, the head is submerged in the water, and the face is exposed to the water. When swimming in, the head always maintains an upright posture, and the trunk naturally rotates around the longitudinal axis due to the alternate paddling action of the two arms.

How many swimming positions are there in swimming? Different postures in swimming bring different exercises to different parts of people’s bodies, because everyone knows that swimming can exercise all parts of people’s bodies, so swimming is very good for everyone to exercise healthily.

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You should know these basics when you first meet baseball.

1. What is the ball made of? How big and how heavy is it?

The outer layer of a baseball is tightly sewn with white horse skin or cowhide, and its center is made of round cork, rubber or similar substances and wound with hemp thread.

Generally speaking, a ball is 7.5 cm in diameter, 141.7-148.8 g in weight and 22.9-23.5 cm in circumference.

Step 2 get to know the bat

The bat should be made of a whole piece or more than two pieces of wood. It is less than 1.07 meters long and less than 7 centimeters wide.

Professional baseball players are not allowed to use metal bats. Only amateur and high school baseball players can use them.

3. Baseball gloves

The pitcher’s gloves should be the same color, except white and gray. The color of decorations on gloves must be the same as that of gloves.

Step 4 dress

Players of the same team should wear uniform colors and styles, and baseball-related patterns and shiny decorations are not allowed on the clothes.

Step 5: Protective gear

Batters and base runner should wear protective hats with ear protection, and they must wear protective hats, face protection, chest protection and leg protection when taking over.

Table tennis world cup: two games 8

On December 7, 2023, the table tennis mixed team World Cup continued. The second stage ended with two matches. South Korea beat Sweden 8-2, taking the lead in winning seven consecutive victories, Germany beat China Taipei 8-2, and the second seed ended its losing streak. The lineup of Guoping against France was announced.

In the first stage, South Korea won four games in a row, ranked first in Group D and advanced to the quarter-finals, but did not encounter too strong opponents. In the second stage, the competition was more intense. South Korea won French and Slovak in a row, and with the previous results against China and Taipei, there were still four rounds to play, of which the third round against Sweden was not sure of winning, which attracted the attention of outside fans, and the South Korean team changed its array and changed to a new lineup.

In the first three sets, South Korea sent Zhang Yuzhen/Tian Zhixi, Li Shiwen and Lin Zhongxun. Now mixed doubles are two choices. Lin Zhongxun/Shen Yubin can’t be underestimated. It depends on who plays singles. Some of the main players of Sweden are absent, and the lineup is relatively weak. Judging from the performance against Japan earlier, they also have strong threats, especially the male players Carlson and Carlberg, who are all first-class players.

The competition adopted the best of 15 games, so it was enough to win eight games first. In the first set, Zhang Yuzhen/Tian Zhixi lost 1-2 to Carlson/Christina (10-12, 11-6 and 6-11), and Zhang Yuzhen/Tian Zhixi were in poor condition and failed to play their best. In the second set, Li Shiwen beat Linda 3-0.

In the third set of men’s singles, Lin Zhongxun swept Carlberg 3-0 (11-7, 11-8, 11-8), and the process was easier than expected. You should know that Zhang Benzhi and Carlberg only won 2 points before, but now Lin Zhongxun has a strong performance and won no opponents directly. In the fourth set, Zhang Yuzhen/Lin Zhongxun beat Carlson/Carlberg 1-0 (11-7).

At the same time, German defeated China Taipei 8-2, mixed doubles meissner/Winter reversed Yang Jiaan/Li Yuhuang 2-1, women’s singles Shan Xiaona beat Chen Siyu 2-1, men’s singles Walther swept Ye Zhiwei 3-0, women’s doubles Shan Xiaona/Winter beat Chen Siyu/Huang Yihua 1-0, and the second seed ended its losing streak and won the first victory at this stage, but she wanted to win the top four.

The table tennis match against France is the focus of the battle. The lineups in the first three sets were announced, followed by Wang Chuqin/Sun Yingsha against Alex/Yuan Jianan, Manyu Wang against Pawad, and Fan Zhendong against Felix. It is worth mentioning that if the first three sets didn’t win eight sets, the lower ranked French team decided to choose men’s doubles or women’s doubles, and the team World Cup is about to usher in the highlight, so please look forward to it.

(Sports International Football) FIFA: Saudi Arabia is the only bidder for the 2034 Football World Cup.

Xinhua News Agency, Geneva, October 31 (Reporter Shan Lei) On October 31, FIFA announced that Saudi Arabian Football Association was the only football association to submit an application for hosting the 2034 Football World Cup before the deadline.

FIFA confirmed that it has received an application from Saudi Arabia to host the 2034 World Cup, and Saudi Arabia is the only country that has expressed its interest in hosting the 2034 World Cup.

Previously, FIFA had announced that the only application for hosting the 2030 World Cup was jointly submitted by the Football Associations of Morocco, Portugal and Spain. At present, these three countries have confirmed their willingness to bid. As the centenary celebration of the World Cup will be held in 2030, FIFA plans to hold a World Cup in Uruguay, Argentina and Paraguay, and these three countries have also confirmed their willingness to host the World Cup.

Like Morocco, Portugal and Spain, Saudi Arabia still needs to pass the FIFA audit. If these bidding countries can meet the requirements of FIFA and go through the whole bidding process, then FIFA will determine its right to host at the FIFA General Assembly at the end of 2024. (End)

FISU Football World Cup, Beijing Normal University women’s team won the championship.

According to Xinhua News Agency, the 2023 FISU Football World Cup closed in Jinjiang, Fujian on October 31, and the men’s team of paulista University in Brazil and the women’s team of Beijing Normal University won the men’s team and the women’s team respectively.

In the first women’s final, the women’s team of Beijing Normal University played against the women’s team of paulista University in Brazil. After the two sides scored twice in the regular time, they failed to make any achievements, and the game entered a penalty shootout. In the end, the women’s team of Beijing Normal University scored five penalties, defeating their opponents with a total score of 7-6 and winning the championship.

Another China team, Hohai University Men’s Team, finished eighth in the men’s team, up five places from the last competition.

The FISU Football World Cup is held every two years, and this year is the second.

Editor Wang Chunqiu

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  • In 2023, the "ugly" anchor in the "double 11" live broadcast was disgusting.

    Reporter Wan Jing

    Recently, the Public Opinion Analysis Report on Consumer Rights Protection in double 11 in 2023 released by China Consumers Association (hereinafter referred to as the Report) shows that China’s consumer market continues to pick up, and consumer demand tends to be diversified and personalized. In this year’s "double 11", competition for "price power" is the main theme of business marketing, and the pursuit of "cost performance" has become a new trend of residents’ consumption. However, the problem of consumer rights protection is still the focus of attention from all walks of life. The rights protection problems mainly focus on the chaos of live broadcast, the quality of goods, the bad experience of mobile phone software advertising, and the dispute over promotion price.

    Live broadcast and low price become hot topics.

    China Consumers Association used the Internet public opinion monitoring system to analyze the related consumer rights protection from October 20th to November 16th. The results show that consumer feedback tends to be positive as a whole, and live broadcast and low price have become hot topics of consumer rights protection in double 11 this year. Besides the old problems of preferential price dispute, counterfeiting and poor after-sales service, price monopoly and software advertising have also brought consumers a bad consumer experience.

    According to the Report, consumers mainly rely on video, Weibo, clients, news websites, WeChat, forums and other channels to reflect various consumer rights protection issues. It is worth noting that this year, consumers use video release to protect their rights with the highest amount of information, accounting for 42.93%; Followed by Weibo, accounting for 24.61%; The third is the client, accounting for 15.67%. This also reflects the "fancy renovation" of China’s consumer rights protection channels. The new media technology has been more and more widely accepted by consumers, and it has shown good "rights protection strength" in the actual consumer rights protection.

    According to the monitoring data of China Consumers Association, the negative information about "live broadcast with goods" reached 1.565 million, accounting for 47.99% of the spit information, with an average daily information of 55,900. The amount of relevant information is mainly concentrated in the first half of double 11, reaching a peak of 94,700 on October 25th. The negative information of "live broadcast with goods" involves price monopoly, vulgar goods, false propaganda and other issues.

    The case of rights protection disclosed in the Report shows that the anchor who made his fortune by judging ugliness in the "live broadcast with goods" is causing more people to resent it.

    In addition, the problem of "fake and shoddy" commodity quality involved in "live broadcast with goods" can not be ignored. According to the monitoring data of China Consumers Association, there are more than 870,000 negative messages related to "commodity quality", accounting for 26.68% of the spit information. These negative messages were concentrated in the early days of "double 11" and reached the peak on October 25th, with 55,600 messages.

    In addition to the problem of "live broadcast with goods", another "slot" that double 11 consumers spit out this year is the bad experience of mobile phone software advertising. People’s hot topics focus on the many forced jumps in mobile phone software advertisements, which make consumers hard to prevent and have a particularly headache.

    According to the Report, many users have been voicing on social platforms recently, saying that their mobile phones are often disturbed by "shake" jump advertisements, and if they are not careful, they will jump to the "double 11" special session of shopping software, which is unbearable.

    The dispute over promotion price is still the focus.

    During the "double 11" this year, the old problems such as "promotional price dispute" are still the focus of consumer complaints, which mainly reflect the problems that merchants and platforms arbitrarily change preferential policies, suddenly cut prices, fail to protect prices, and induce consumers to cancel orders. For example, the recent incident that the price of the iPhone15′ double 11′ was reduced in the last two hours, which was highly concerned by public opinion, made many consumers who bought the iPhone 15 in the early stage of the "double 11" campaign feel that they were "backstab in price".

    According to the Report, there are 63,800 negative messages about "promotional price disputes", accounting for 1.96% of the spit messages, with an average of 2,277 messages per day. The overall trend fluctuates and rises. On October 31, November 10 and November 13, spit messages appeared in a concentrated manner, with the highest amount of information on November 10, at 4,635.

    According to the analysis of China Consumers Association, this year’s routines of platforms and businesses have been simplified, which are all attributed to "low prices", but more new competitions have also been derived from this. The progress of science and technology and the development of live broadcast format have brought more convenience to consumers, but their extensive management and loopholes have also affected consumers’ shopping experience to some extent. Specific performance in the following three aspects:

    Simplification of rules does not mean that there are no rules, and the integrity consciousness and contract spirit of merchants need to be improved. "Price power" is the key to strengthening user stickiness in major platforms this year, and consumers are more sensitive to price than ever this year. However, this year, there are still cases of preferential policies adjustment or even direct price reduction after the final payment, and consumers have said that they have "encountered backstab". Behind the "shopping" of low prices, businesses and platforms should realize that the formulation of preferential policies should follow the market rules and the spirit of contract, and it is not acceptable to raise prices first and then lower prices. The constant change of prices for the second time will also hurt consumers’ feelings and brand image.

    More and more new platforms and businesses are entering the market, and the government’s assistance and supervision of platforms need to be strengthened. This year’s "double 11" is the most attended by small and medium-sized businesses and Internet platforms, and the foundation of these "fresh blood" is relatively weak. Behind the chaos of "rollover" of live broadcast, there are vulgar goods and false propaganda caused by chasing traffic, counterfeiting and refund disputes caused by craving for income, and lack of after-sales service caused by imperfect system. Merchants and brands need not only more intimate assistance policies, but also stricter regulatory measures, so as to seek the improvement of quality and service beyond low prices and adapt to the trend of diversified consumption.

    Drainage advertisements should be "convenient" rather than "disturbing people", and related App behaviors must be restricted and guided. In this year’s "double 11", consumers nicknamed it "all roads are electrified". Frequent and chaotic jumping of open-screen advertisements is a short-sighted behavior, which may bring some convenience to consumers, but more often it leads to consumers’ disgust and resistance. From the advertiser’s point of view, this approach may get a certain amount of clicks, but it consumes the user’s goodwill and trust. Open-screen advertising governance has been introduced at the beginning of the year, but it still needs e-commerce platforms, App developers and businesses to reach a consensus and strengthen self-discipline.

    Consumers should be assured of their peace of mind.

    The reporter found that this year’s "double 11" consumer rights protection public opinion was mostly triggered by the "low price" promotion of platforms and merchants. Platforms, anchors, merchants and consumers played games with each other in order to obtain the greatest benefits, and innovation and change were also in line with the characteristics of the current economic environment.

    Liu Junhai, executive director of China Consumers Association and a professor at the Law School of Renmin University of China, believes that China has entered a stage of high-quality development, and people’s yearning for a better life has generally shifted from "whether there is" to "whether it is good". With the improvement of residents’ income level, the consumption structure has gradually shifted from survival to development and enjoyment, and the people’s requirements for the quality, environmental protection and safety of goods and services have also been continuously improved. Guided by the concept of high-quality development, the government conforms to the trend of people’s consumption upgrading and vigorously promotes green consumption, intelligent consumption and healthy consumption. Among them, it is also very important to constantly improve the consumption environment and solve all kinds of market consumption disputes.

    In this regard, the Report also suggested that the future market competition should adhere to refinement, institutionalization and standardization, and provide consumers with more cost-effective products, better services and more convenient consumption experience with the help of digitalization and AI empowerment. Platforms and businesses should aim at "price power" and continue to exert their strength, adhere to legal compliance, tap consumer demand, and provide consumers with more cost-effective products. At the same time, seek to improve the "service power" and win the favor of consumers with better service and low price strategy.

    The platform should earnestly fulfill its management responsibilities and maintain market order. On the one hand, give more support to small and medium-sized businesses, reduce service fees, provide support policies and conduct professional training to stimulate market vitality. On the other hand, we should strictly supervise false propaganda and price misleading, eliminate the chaos of live broadcast, improve the professional quality of anchors and create a level playing field.

    The regulatory authorities should continuously improve their regulatory capacity and level in the field of live broadcasting. Make good use of scientific and technological strength, use emerging technologies to develop new means of supervision, and further strengthen the standardized management of platforms, anchors, businesses, etc. Be wary of "price monopoly" and "new routines" to ensure consumers’ peace of mind.

    The media should play a greater role in guiding consumer behavior and helping consumer rights protection. Guide consumers to establish a correct consumption concept through public opinion propaganda, improve consumers’ awareness of discrimination, and enhance their resistance to induced consumption; Constantly broaden the channels of consumer rights protection, pay attention to the information of consumer rights protection on social media platforms, guide and help consumers to rationally protect their rights, and provide consumers with more rights protection.

    Football today: Liverpool vs Toulouse Graz storm vs Atlanta

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    Football today: Liverpool vs Toulouse Graz storm vs Atlanta

    Today is a football feast, and two high-profile European games will start soon. One is Liverpool against Toulouse, and the other is Graz storm against Atlanta. Let’s take a look at these two focus wars.

    First of all, let’s take a look at Liverpool’s game against Toulouse.

    As the champion of the Premier League, Liverpool naturally attracts much attention. They have done well in the Premier League and have always been at the top of the list. Toulouse, on the other hand, is a strong team in Ligue 1, and has also made good achievements in Ligue 1 in recent years. This game can be said to be a match of equal strength.

    Liverpool sent the strongest team in this game. Their strikers, Trident Salah, firmino and Mane will continue to lead the attack line. Henderson, Keita and Fabio in midfield will be responsible for organizing the game. Van Dyke and Alexander Arnold on the back line will defend with all their strength. This Liverpool team can be said to be of great strength.

    The Toulouse team did not show weakness. Their forwards Xavier Jr., Baigneaux and Salahnovsky will form a powerful offensive force. Du Kulei and Kasami in midfield will be responsible for organizing the match. Vallanet and Alvarez at the back will do their best to protect the goal. Although this Toulouse team is not as strong as Liverpool, it will never give up easily.

    Next, let’s take a look at the game between Graz Storm and Atlanta. Graz Storm is a strong team in the Austrian Super League, and they have been doing well in the past few seasons. Atlanta is a strong team in Serie A, and they also have good results.

    Graz Storm sent the strongest team in this game.

    Their strikers strinic, Kramaric and Wesley will be in charge of the attack. In the midfield position, Sinkavic and Ulm will organize the game. On the back line, Brabuye and Widdel will do their best to protect the goal. The strength of this Graz storm team should not be underestimated.

    The Atlanta team also sent a strong lineup.

    Their strikers Ilisic, Pasici and muriel will form the attack line. Gomez and Frailey in midfield will be responsible for organizing the match. Himir and Toran on the back line will defend with all their strength. This Atlanta team has excellent strength.

    The results of these two games are expected, whether it is Liverpool against Toulouse or Graz storm against Atlanta, it will be a wonderful confrontation.

    We are looking forward to cheering for our favorite team!

    The above is the introduction of two focus games in today’s football, hoping to bring a wonderful football feast to the fans. Let’s look forward to the wonderful performance of these two games together!

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