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In a long distance race, the athletes were expected to take four rounds of the track such that the line of finish was same as the line of start. Suppose the length of the track was 200 m.
(a) What is the total distance to be covered by the athletes ?
(b) What is the displacement of the athletes when they touch the finish line ?
(c) Is the motion of the athletes uniform or non-uniform ?
(d) Is the displacement of an athlete and the distance moved by him at the end of the race equal ?
Given, Length of the track = 200 mExpected rounds athlete are supposed to take = 4
(a) Total distance covered by each athlete = 4 × 200 = 800 m.
(b) As the line of finish is the same as the line of start, so displacement of each athlete = 0.
(c) Motion of the athletes is non-uniform as the speed of the athlete will be changing at each point.
(d) From parts (a) and (b), the distance and displacement of an athlete are not equal at the end of the race.
Soccer is a popular sport worldwide and that moves millions of people, practitioners or spectators. The practitioners, they are amateur or professional, seeking the best performance in the field seeking help your team achieve great results.
The intensity and the workload are influential on the necessary physiological demand in a match, and these variables can be indicated by the distance
traveled by the athlete. The activities carried out by the practitioners during the match and the intensity of the same determine the type of action (Hughes, 2003).
Studies have considered that the work rate profile is able to estimate the contribution of each energy system during the game, as well as to identify factors contributing to training programs (Tumilty, 1993; Bangsbo, 1994).
The work rate can be described by the distance traveled by the athlete and / or the frequency of their actions within the game (Bangsbo, 1994;. STOLEN, et al, 2005).
Distance traveled in field
Several studies have been produced in order to compare the distance traveled by athletes from different positions on the field, compare technical levels, among others.
In table found in the book Football: Applied Sciences Game and Training (See below) we can see that the distance traveled by the online players have a range from 8000 to 12,000 meters per game, while some authors report that this variation may be due to difference of assessment methods (Ekblom, 1986; REILLY, 2003).
Activities or actions in the game
There is a big discussion about what would be the difference between teams of different levels of sports performance.
For this mission, the distance covered by the athlete is unable to measure. As a parameter in Thatcher research and Batterham (2004), noted that the distance athletes Under-19 averaged 600 meters above the professional athletes, what makes us think that more important than the distance, it is the number of actions during the game, and the distance at high intensity.
Over the years football has become more agile, hard and with less space for large displacements at low intensity as before (SILVA NETO, 2013).
The number of shares in the game increased in recent years making anaerobic activities, with greater intensity, making the work rate higher and key to achieving the expected results.
Factors influencing the work rate
The literature highlights factors that influence the distance on the field and the rate of work, being them:
The literature highlights the distance traveled difference according to the position on the field, where it is consensus that the midfielders in general have greater distance in a game, especially when you have a responsibility to support the defense and attack (STOLEN et al., 2005).
Rienzi et al. (2000) reports that midfielders have more aerobic actions as attackers and defenders use more intense and anaerobic movements.
Another factor that influence the distance the footballer’s style of play, which can range from quick counter attacks, keeping possession, more defensive style, long balls, etc.
In addition to this, fatigue is a factor, as some articles have found reductions in distances traveled by athletes in the second half compared the distance achieved during the first starting time (ANANIAS et al, 1998;. RAHNAMA et al, 2003).
Finally, the competitive level is also a variable that should be highlighted, where it was found in the literature a significant difference between professional and
amateur, where the first had a greater distance and greater number of shares during the matches (O’DONOGHUE et al., 2001).
We can suggest to the findings that the distance is not decisive in general, only if there is a considerable amount of intense shifts, able to provide decisive moments in the match (MOHR et al., 2003).
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When it comes to running in sports, some have it worse than others. Players in soccer’s World Cup, for example, run an estimated seven miles per game. (And the refs will run even more!) Here’s how that compares to athletes in other sports.
Baseball: .0375 miles
This is a rather generous estimate that translates into approximately 198 feet per game, taken from the 2015 statistics of the current Major League Basebal star Mike Trout from the Los Angeles Angels. The distance between each base is 90 feet. Adding all of the total bases (singles, doubles, triples, and home runs) and stolen bases that Mike Trout logged during the 2015 regular season, the total distance run comes to just more under six miles. (Obviously, as a centerfielder he covers a lot of extra ground on defense, as well.) Those not as successful at the plate log even less mileage—or more accurately, feet.
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Football: 1.25 miles for receivers and cornerbacks
Football players don’t have a lot of time to travel very far. According to the Wall Street Journal, the average NFL game includes only 11 minutes of actual playing time. Receivers and cornerbacks run the most at just over one mile a game. That’s still an impressive feat considering 11 massive and highly trained athletes would prefer they run as little as possible.
Basketball: 2.55 miles
Cutting-edge tracking technology has allowed coaches and statisticians to track NBA player performance in real time, including the distance traveled per game. (Our average is a rough estimate of the top 10 players in distance per game during the 2016 NBA season.) According to the site NBAMiner.com, which tracks advanced player statistics, running the most during the 2016 season was Jimmy Butler of the Chicago Bulls at 2.74 miles per game.
Tennis: 3 miles
Tennis: 3 miles
Distance traveled depends heavily on playing style and the duration of a match, but competitive players can expect to shuffle and sprint nearly a 5K while chasing down balls. During the longest recorded tennis match, at Wimbledon in 2010, it’s estimated that John Isner and Nicholas Mahut each ran about six miles during 11 hours and five minutes of play.
Field Hockey: 5.6 miles
According to Tribesports, field hockey players travel more than athletes in almost any other sport, chasing and defending the ball for nearly a 10K during 70 minutes of play.
Soccer: 7 miles
A large field, a fast moving ball, and rare substitutions mean soccer players can expect to log some heavy mileage over 90-plus minutes. Midfielders tend to run the most, sometimes reaching nearly 9.5 miles, according to SportVU.
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Kit has been a health, fitness, and running journalist for the past five years. His work has taken him across the country, from Hayward Field in Eugene, Oregon, to cover the 2016 Olympic Trials to the top of Mt. Katahdin in Maine to cover Scott Jurek’s record-breaking Appalachian Trail thru-hike in 2015.
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