Average 40 yard dash time for 11 year old boy

For example, if you search for 50- to 54-year-old men's 100-yard freestyle in 2018-19, the fastest time is 48.26 seconds. But the middle time of the top 500 is 1:04.64. For the 25- to 29-year-old women, the average swimming time for the 1650 (the swimming competition version of a mile), out of the times recorded, is around 21:30.

I'm gonna say first of all that it is highly unlikely that either your teammates or you are running close to sub 4.5 a hand time will definitely make a difference by a relatively very large portion, the average 40 time for a wide receiver in the nfl combine is something like a 4.48, here's a study showing hand time for the 40 specifically is actually .31 seconds on average faster than ...The average 40 yard dash time varies across age groups. For teenagers (15-19 years old) it is typically around 5.8-6.2 seconds, while for adults (20-29 years old) it is around 5.0-5.3 seconds. These times can vary based on individual factors such as fitness level and training.110'0″-90'0″. 120'0″-100'0″. Some colleges publish their track and field recruiting and scholarship standards. Others don't, but you can find standards necessary to compete in their division's championships. Below is a sampling of D1-D3 schools' track and field recruiting standards and performance lists.The average time it takes an 18 year old boy to run the 30 yard dash is about 3.75 seconds according to psychologist Kathleen Stassen Berger. This figure is found on page 421 of her textbook The Developing Person Through Childhood and Adolescence. Mickey Mantle could run from 1st base to second base, 90 feet, in 3.1 seconds.Apache/2.4.52 (Ubuntu) Server at www.thefootballusa.com Port 80Men's fashion has changed a great deal over the past 100 years. Take a look at men's fashion trends from different time periods at HowStuffWorks. Advertisement It may seem like guy...Hill's 4.82 second 40-yard dash in high school would have placed him 13th among all defensive linemen at this year's Combine, but he ran a 5.23 Monday, good for a tie for 30th. In fact, only five ...

im 18 and run a 4.47 and im one of the fastest in my age group so 5.9 would be super fast. 6.2 would be fast. 6.4 would be average 10 seconds. My best as a 10 year old boy in fifth grade in 1962 was 7.2 seconds. One boy was faster, at 7.1 seconds. I never knew if these were good or just average. My 7 year old grandson did the 50 in 10.53. My 7 year old granddaughter did the 50 in 10.52. Of this is backyard olimics, thying to be as accurate as possible.And a 5.01 40M 5.12 40M all at 11 years old I usually always get under 6 in the 40 and under 13 in the 100M. I am 12 year old. I ran 2.78. Im 11 and i run a 4.48. I ran a 5.5, and I am only 12. I’m 13 120 pounds and run a 4.7 40. For a 12 year old boy, 6.82 seconds is the average time for a 40 yard dash. The fastest time posted is 6.13 seconds.40 time: 4.39 seconds (86%*) Age: ... Harrison Jr. saw action in 12 games with no starts for the Buckeyes as he made 11 receptions for just 139 yards for an average of 12.6 yards per reception, with 3 TDs. ... including height, weight, 40-yard dash times, on-field performance statistics, and overall player rating. The analysis is conducted ...2. Once you have your 10 yard dash time you're going to add anywhere from 3 to 3.25 seconds to it and get an optimal "projected" 40. Look at the following table to see how much to add: 10 yard dash. 1.6-1.7: tack on 3.1 to 3.25 seconds 1.5-1.6: tack on 3.0 to 3.1 seconds 1.5 or less: tack on 3.0 seconds** By equivalent performance, we mean another run with the same age graded percent. Of course, training for a 100 meter dash is ridiculously different from training for a 100 mile race, so just because the calculator gives you an equivalent time doesn’t mean you’ll automatically be able to run it. You still have to train appropriately.They achieve adult height usually at the age of 14-15 or a couple of years after menstruation occurs the first time. ... The average height of a 12-year-old boy is 148.3 cm (4 ft 10 in), while for a 12-year-old girl, it is 150.0 cm (4 ft 11 in). The reason girls are slightly taller at this age is that, on average, they go through puberty ...

What is the average 10 yard dash time for a 13 year old boy with football experience? A 10 yard dash time is really not a good judge of your speed, the distance is too short. A 40 yard dash is what you need to get a good estimate of your abilities. but I'll give you time for both 40 yard dash-between 5-5.8 seconds 10 yard dash-between 1.3-1.5 ...Can you imagine having a 17 year old male sprinter on your team who runs 11.45 for 100 meters, then the following year as a Junior he runs 10.50. 10.30 is the IAAF “A” standard so you dare to write him off as “Nah, he’ll never be a world class sprinter” kind of attitude.Begin with your feet in 40 yard dash position. Push the hips back and lean the torso forward. Explode out as far as you can and land softly. 2. Single Leg Triple Jump. Single leg triple jumps are another one of my go to plyometrics to help athletes run a faster 40 yard dash.What is the average 10 yard dash time for a 13 year old boy with football experience? A 10 yard dash time is really not a good judge of your speed, the distance is too short. A 40 yard dash is what you need to get a good estimate of your abilities. but I'll give you time for both 40 yard dash-between 5-5.8 seconds 10 yard dash-between 1.3-1.5 ...We would like to show you a description here but the site won’t allow us.

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Every football player covets a fast 40-Yard Dash time. A blazing 40 can gain the attention of coaches and scouts, and it looks downright impressive. ... Most high school 40 times are recorded by individuals who are inexperienced in timing the 40-Yard Dash. The average 4-year-old boy is about 3 feet 6 inches, so your son is taller than average ...Here's a quick & short answer that'll definitely help you out! Top professional soccer players like Lionel Messi, Cristiano Ronaldo, and Arjen Robben have been recorded reaching speeds between 32.5-37 km/hr during games. Based on these top speeds, their projected 40-yard dash times would be in the range of 4.5-5.3 seconds.In terms of volume or how much, Josse suggested that the volume of flying sprints (which also includes the build-up) be minimal; stating that "linear sprint workouts for football players usually don't need to exceed 300 yards in one workout" vary between 250-300 yards (speed skills), 200-250 yards (big skill and combo) and 100-200 yards for linemen and pro-style quarterbacks.54.89* 48.89* 42.89* 40.89* 38.89* 36.89* 50 M Back 36.89* 38.89* 40.99* 42.99* 49.19* 55.29* 1:59.19* 1:45.99* 1:32.69* 1:28.29* 1:23.89* 1:19.49* 100 M Back 1:18.79* 1:22.89* 1:26.89* 1:30.89* 1:42.99* 1:54.99* 1:00.49* 53.99* 47.49* 45.29* 43.09* 40.89* 50 M Breast 40.59* 42.69* 44.89* 46.99* 53.29* 59.69*Every day for a week, he counts how many times each player can leg press 350 pounds. The following week, he has each player sprint 40 yards every day. The tables shows the average number of leg-press repetitions and the average 40-yard dash time (in seconds) for seven randomly selected players. What is the equation of the line of best fit

The average time it takes an 18 year old boy to run the 30 yard dash is about 3.75 seconds according to psychologist Kathleen Stassen Berger. This figure is found on page 421 of her textbook The Developing Person Through Childhood and Adolescence. Mickey Mantle could run from 1st base to second base, 90 feet, in 3.1 seconds.If someone gave you that time seriously both you and them are deluded. You would be one of the fastest 15 year-olds in the world if your ran a 3.9-4.0, and I seriously doubt you can come close to 4 seconds. Your supposed time translates to around a 4.1 40 yard dash which would break Deion Sanders combine record (if Bo doesn't own the record).Then, calculate the total time for the 6 players with the new average: 5.5 seconds/player × 6 players = 33.0 seconds. To find the time of the new player, subtract the original team's total time from the new total time: 33.0 seconds - 28.5 seconds = 4.5 seconds. Therefore, the personal time for the 40 yard dash of the new player is 4.5 seconds.The average time to swim 50m freestyle varies depending on the age and skill level of the swimmer. Generally, a good time for a beginner adult swimmer is around 59 seconds, while a good time for an experienced swimmer is around 28-33 seconds. For younger swimmers, times can be much faster.Generally the school was asking for anyone who could run 100m in 16s or less to join up for trials. M y son is is 12 years old, in pretty good shape, this was his first time running track and he ran the 100 yard dash in 14.02 seconds. T he average speed for a boy born in the years 1994-1995 is about a 13.5-16.0.5 sec per year from age 11 until 15. Then, 0.2 sec thereafter. This means for the 60 yard dash: 9.5 sec age 11 9.0 sec age 12 8.5 sec age 13 8.0 sec age 14 7.5 sec age 15 7.3 sec age 16 7.1 sec age 17 6.9 sec age 18On-field workouts for the 2023 NFL Combine start today. Here is a look at the average 40-yard dash time by position over the last decade. Cornerbacks have clocked in at the fastest average time at 4.50 seconds, with wide receivers (4.51 seconds) and safeties (4.55 seconds) right behind them. Data Source(s) and Tools:I'm gonna say first of all that it is highly unlikely that either your teammates or you are running close to sub 4.5 a hand time will definitely make a difference by a relatively very large portion, the average 40 time for a wide receiver in the nfl combine is something like a 4.48, here's a study showing hand time for the 40 specifically is actually .31 seconds on average faster than ...Question: 2. How fast are NFL Players? Prior to 2012, the average forty yard dash time for running backs and wide receivers was 4.53. On average, were NFL players between 2012-2014 significantly faster than in previous years? a. State the hypotheses of interest.What is the average 40 yard dash time for a high schooler? ... Intermediate female sprinters ages 14 and 15 should achieve a time of 11.6 seconds in the 100-meter sprint and 26 seconds in the 200-meter sprint. ... Running Times for Boys. A 12-year-old boy who can complete a 1-mile run in eight minutes and 40 seconds sits at about the …

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When he turned 50 years old in 2010, Green wanted to see if he still had wheels and was timed in the 40-yard dash. Friends and family could only laugh in amazement when he turned in a time of 4.43 seconds. In 2016, Green was hired as an associate athletics director and special assistant to the athletic director at George Mason University in ...We provide strength and fitness calculators for strength training, and cardio standards for running, rowing, swimming and cycling. How fit are you? Calculate male/female running performance for all distances including 5k, 10k, 1 Mile, 2 Mile and 3 Mile. Compare your races against other runners the same age. Compete with friends.100-meter time: 17.61 seconds. From this data, we can calculate the average human athlete sprinting speed across both sexes to be 18.23 mph (3:17.5 minutes per mile), or 29.33 kilometers per hour. Average male sprinting speed: 19.52 mph (3:04.4 minutes per mile), or 31.4 kilometers per hour.What is the average 10 yard dash time for a 13 year old boy with football experience? A 10 yard dash time is really not a good judge of your speed, the distance is too short. A 40 yard dash is what you need to get a good estimate of your abilities. but I'll give you time for both 40 yard dash-between 5-5.8 seconds 10 yard dash-between 1.3-1.5 ...According to NFL Draft Buzz, Cooper DeJean has a 40-yard dash time of 4.50 seconds. During his high school days, the CB ran the 100-meter dash in 11.16 seconds and the 200-meter dash in 22.12 ...What is a Good 40 Yard Dash Time? A good 40 yard dash time varies by age, gender, and sport. Here is a general guideline for what is considered a good 40 yard dash time: High school athletes: 4.5 - 5.5 seconds; College athletes: 4.4 - 5.0 seconds; Professional athletes: 4.3 - 4.7 seconds; Average 40 Yard Dash Time by Age Chart. Here is an ...For the flying 30-meter dash, the average speed for 16- to 19-year-old girls ranges from 4.3 to 4.4 seconds, according to "Physical Education and the Study of Sport" by Robert Davis. While an excellent speed drops below 4.5 seconds, a poor speed is 4.6 seconds or higher. Boys in the same age group run about 4 to 5 seconds faster than the girls.Sep 28, 2023 · 10 seconds. My best as a 10 year old boy in fifth grade in 1962 was 7.2 seconds. One boy was faster, at 7.1 seconds. I never knew if these were good or just average. My 7 year old grandson did the 50 in 10.53. My 7 year old granddaughter did the 50 in 10.52. Of this is backyard olimics, thying to be as accurate as possible. Since 2013, only 11 players have run a sub-4.30 second 40-yard-dash. They comprise of six wide receivers, three cornerbacks and two running backs. Last year, these were the 17 fastest college ...Aug 30, 2023 · in 14 in hs and about 175 5'6 and i run it in about 5.5. depends on how much you weigh. I would say the average 13 year old 40 yard dash is: Well, the fastest recorded in history is 4.8 i think. I one a saw a kid run a 7.0 40 yard dash, and he was also 13 years old. so if you average those out or find the mediun of those, you would get 5.9.

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A good clue to determine whether you should hyphenate the year old phrase is to see if a noun comes after it. If there is a noun, hyphenate: six-year-old toy. fifty-year-old whiskey. eight-year-old cat. If the sentence is simply stating that someone or something is so many years old, then don't use a hyphen: Her dad turned sixty years old today.in 14 in hs and about 175 5'6 and i run it in about 5.5. depends on how much you weigh. I would say the average 13 year old 40 yard dash is: Well, the fastest recorded in history is 4.8 i think. I one a saw a kid run a 7.0 40 yard dash, and he was also 13 years old. so if you average those out or find the mediun of those, you would get 5.9.You need a box step, YouTube, and a little dash of confidence. Dancing can be intimidating. At any wedding or club, there always seems to be someone there who looks so effortlessly...100-meter time: 17.61 seconds. From this data, we can calculate the average human athlete sprinting speed across both sexes to be 18.23 mph (3:17.5 minutes per mile), or 29.33 kilometers per hour. Average male sprinting speed: 19.52 mph (3:04.4 minutes per mile), or 31.4 kilometers per hour.Pickerington Ridgeview: Xavier McCoy, Juell Scott, Sherone White Jr., George Akotia: 45.12: 2021: Massillon MS: Javon Merriweather Savior Owens Reymir Jackson Deontay MaloneWhat is the average 40 yard dash time for a high schooler? ... Intermediate female sprinters ages 14 and 15 should achieve a time of 11.6 seconds in the 100-meter sprint and 26 seconds in the 200-meter sprint. ... Running Times for Boys. A 12-year-old boy who can complete a 1-mile run in eight minutes and 40 seconds sits at about the …Hill's 4.82 second 40-yard dash in high school would have placed him 13th among all defensive linemen at this year's Combine, but he ran a 5.23 Monday, good for a tie for 30th. In fact, only five ...Results: Boys 100 Meter Dash 14 years old (Prelims) UNOFFICIAL RESULTS; Pl Athlete Time Heat (pl) 1: Kendrick JONES JR.Young Runners : 10.98 -2.2: 8 (1) 2: ... Swoop Time Track Club : DNS: 11: Malachi DAWSONBlack Lightning : DNS: 11: Jay'Vier KERRGood2Great : DNS: 11: Reon WEBSTERLightning Speed Track Club : DNS: 11: Cole DAVINAccording to High School Baseball Web, the average 60 yard dash time decreases by 0.5 seconds per year from age 11 until 15, and then decreases by 0.2 seconds thereafter. This means that at age 11, the average time is 9.5 seconds, while at age 18, it is 6.9 seconds. These times are crucial for players who want to be scouted by college and ... ….

According to sources, running backs come in second at 4.49, following wide receivers and cornerbacks at 4.48. The players' typical 40-yard dash times by position are listed below: Wide receivers ...Of the five quarterbacks with 1,000-plus rushing yards over the past two years, only two have a 40 time below 4.5 seconds. ... most is 40-yard dash time. ... .5 mph and an average speed of 20.1 ...The average 40-yard dash from the fastest players in the 2023 NFL Combine is 4.58 seconds, while the average ball carries from 2022 is 21.52 mph. The 40-yard dash data was pulled from the 2023 NFL Combine, and the average ball-carrying speed from Nextgenstats. After collecting the data, we calculated the average numbers.People drank more booze, more milk, more coffee, but less soda. And the average American man in his 40s was 23 lbs lighter. The final season of Mad Men, AMC’s hit TV show about a 1...See Answer. Question: You have been working with your cousin over the summer to prepare for high school football tryouts. He is asking you to figure out where he currently ranks among his peers for his height, weight, and 40 yard dash time. Your cousin is 70 inches tall, weighs 143.5 lbs, and his fastest 40 yard dash is 4.7 seconds.mph = 18.18. Divide the number of seconds in an hour, 3600, by your time per mile, 198. The answer is rounded to two decimals. 18.18 mph. A 40-yard dash completed in 4.50 seconds would be about 18.18 miles per hour (mph), after rounding to two decimals. Convert 18.18 miles per hour to kilometers per hour using the online converter.Aug 25, 2008 · The average MLB outfielder can (from contact) get the ball to home plate in 7 seconds, therefore, if you cannot score in that time you will usually be out at the plate. Here is the 8 point system some organizations use: 80 - Exceptional 70 - W. Above Avg. 60 - Above Avg. 50 - Average 40 - Bellow Avg. 30 - W. Bellow Avg. 20 - Poor 60 Yard time: Getty Images. Earlier this year, Pro Football Hall of Fame wide receiver Terrell Owens claimed that he could still run a 40-yard dash in under 4.5 seconds during an appearance on a podcast. It was ... Average 40 yard dash time for 11 year old boy, What is the average 10 yard dash time for a 13 year old boy with football experience? A 10 yard dash time is really not a good judge of your speed, the distance is too short. A 40 yard dash is what you need to get a good estimate of your abilities. but I'll give you time for both 40 yard dash-between 5-5.8 seconds 10 yard dash-between 1.3 …, 45-47. According to the data table, the average time for a high school male runner in a 400m race is 54 seconds, while for females of that age group, it is 58 seconds. For the average Joe off the streets, the average time for the 400m is between 70 and 90 seconds. However, elite runners can complete the race between 45 and 47 seconds, which is ..., According to sources, running backs come in second at 4.49, following wide receivers and cornerbacks at 4.48. The players' typical 40-yard dash times by position are listed below: Wide receivers ..., Marble Fun. $$$$$. STEM. This maze toy for 11-year-old boys is both a game and a marble run! It comes with a game grid, 9 towers, a target piece, and 3 marbles. It also comes with 60 challenge cards that range from beginner to expert. He can pick up a card and must build a marble run that meets the challenge., im 18 and run a 4.47 and im one of the fastest in my age group so 5.9 would be super fast. 6.2 would be fast. 6.4 would be average , Wilt ran the 100-yard dash in 10.9 seconds, threw the shot-put 56 feet, he triple jumped 50 feet, and he won the Big Eight high jump three straight years." James' junior season high school ..., If someone gave you that time seriously both you and them are deluded. You would be one of the fastest 15 year-olds in the world if your ran a 3.9-4.0, and I seriously doubt you can come close to 4 seconds. Your supposed time translates to around a 4.1 40 yard dash which would break Deion Sanders combine record (if Bo doesn't own the record)., 56-70 mm Hg. School-aged child. 97-112 mm Hg. 57-71 mm Hg. Adolescent. 112-128 mm Hg. 66-80 mm Hg. What is considered healthy for your child also varies by height, age, and sex. You can use Baylor College of Medicine's calculator to see if your child's blood pressure reading is in a healthy range., At 67 kg and 5'10", what is a good 40-yard dash time for a 15-year-old? The average is 5.2, the average is good 4.9, and the average is excellent 4.6. Anything higher than 5.5 isn't so good. This is coming from a coach who has spent over 20 years timed 100s. Is a 40-yard dash a good idea? People tend to forget that a 40-yard dash time of ..., Fastest 40-Yard Dash Times at the 2024 NFL Combine by Position The 40-yard dash is the premier event of the 2024 NFL Combine, with no drill leading to more publicity or scrutiny for players. As the showpiece drill, it is the test that will get replayed on airwaves for years to come, but it is the 10-yard split that is more translatable to the NFL ., We would like to show you a description here but the site won't allow us., I use to run a 5.2 but that was a long time ago. Probably 15, so in my peak I think I can hit mid 4 seconds. 40 yard dash btw. 5.2 is horrible for a 15 year old. My sophomore year, at age 15, I ran an official 4.71 at Ok State football camp. No prior training, and I stumbled at the launch. 04-10-2014, 07:30 PM #8., When it comes to age grading, which calculates an individual’s performance based on their age and gender, the average time for a 40-year-old male to run 100m is 13.98 seconds …, mph = 18.18. Divide the number of seconds in an hour, 3600, by your time per mile, 198. The answer is rounded to two decimals. 18.18 mph. A 40-yard dash completed in 4.50 seconds would be about 18.18 miles per hour (mph), after rounding to two decimals. Convert 18.18 miles per hour to kilometers per hour using the online converter., 4.9 - 5.6 secs. Recreational College athletes (male) ~5.0 secs. Recreational College athletes (female) ~5.8 secs. What is a good 40 yard dash time for an average person? Heck, the 40 yard dash is only a bit more than 36 meters, which is very short for most sprinters. Given fast NFL players run this sub-4.5 seconds, I'm going to say 5-5.5 ..., Your cousin is 70 inches tall. weighs 143.5 lbs, and his fastest 40 yard dash is 4.7 seconds. You've collected data to determine the following: average height for his peers is 67 inches (with a std dev. of 1 inch), average weight is 140 lbs (with a std. dev. of 2 lbs), and the average 40 yard dash time is 5.2 seconds (with a std dev of 0.2 ..., Outdoor Gifts for 11 Year old Boy. Another easy answer for you. Go with the Backyard Discovery Playset . This brilliant play and swing set is an absolute beast! It's made from cedarwood, which is ..., We would like to show you a description here but the site won't allow us., mph = 18.18. Divide the number of seconds in an hour, 3600, by your time per mile, 198. The answer is rounded to two decimals. 18.18 mph. A 40-yard dash completed in 4.50 seconds would be about 18.18 miles per hour (mph), after rounding to two decimals. Convert 18.18 miles per hour to kilometers per hour using the online converter., The 40-yard dash is a sprint covering 40 yards (36.576 m). ... A year and a half after he retired from active competition, Usain Bolt ran a 4.22 in running shoes and a tracksuit at a promotional event for the Super Bowl in Atlanta, Georgia on February 2, 2019. ... The following average times were measured between 2000 and 2012 at the NFL ..., If someone gave you that time seriously both you and them are deluded. You would be one of the fastest 15 year-olds in the world if your ran a 3.9-4.0, and I seriously doubt you can come close to 4 seconds. Your supposed time translates to around a 4.1 40 yard dash which would break Deion Sanders combine record (if Bo doesn't own the record)., One of the more pop'yar drills, called the 40 yard dash, is the time it takes each player to run 40 yards. We computed the average 40 yard dash time every season from 1990 to 2016 for all players at two positions: wide receiver (WR), who receive passes from the quarterback, and defensive cornerback (DC). who try to stop the wide receivers from ..., The average 40-yard dash time from 36 QB prospects was 4.78. 2017 NFL Combine. Average 40-yard dash time: 4.75. 2018 NFL Combine. Average 40-yard dash time: 4.82. 2019 NFL Combine. Average 40-yard dash time: 4.79. 2020 NFL Combine. Average 40-yard dash time: 4.78., A woman can jog at 6.5mph and run 100m in 34 seconds. A non-elite athlete can run 100m in 13-14 seconds or at 15.9mph. What is the fastest time to run 100 yards? For those unfamiliar with top 100-meter dash times, let's look at the world records for that event. Men: Usain Bolt, 9.58 seconds (set in 2009), The average college football player is nearly a tenth of a second slower (e.g., a NFL Combine 4.5 after a high school 4.4) after four to five years in a college strength and conditioning program as he was when he entered that program. 93 players ran a sub-4.5 second 40 yard dash in high school., We would like to show you a description here but the site won’t allow us., The 40 yard dash was an arbitrary number, just like the 72 ounce steak “eat in 1 hour and it’s free” in Amarillo Texas on Route 66. Someone chose 40 yards as the distance a football player needs to run, just like 72 ounces (4.5 pounds or over 2 kilograms!) of steak as simply a very large amount of steak eaten by one human in one sitting., On average, male runners can run at about 6.6 mph (10.62 km/h) and women, at 5.7 mph (9.17 km/h). Strava Run generally says the average mile time is …, http://www.hudl.com/athlete/4430793/derrell-carterhttp://www.burdvideoandphoto.com/Five Star Skills Camp Official 40 yard dash, The average time to swim 50m freestyle varies depending on the age and skill level of the swimmer. Generally, a good time for a beginner adult swimmer is around 59 seconds, while a good time for an experienced swimmer is around 28-33 seconds. For younger swimmers, times can be much faster., We would like to show you a description here but the site won’t allow us., Good. Under 13 seconds. Alright. Under 14 seconds. Alright. 100m sprint average times. Based on the information in the table, you can work out what level you are at and what you need to do to increase your 100 meter dash time. You can also work out your average 100m sprint time by age by analysing your average sprinting speed., for 10 to 11-year olds compared to 12 to 15-year olds and BMI for 5 to 9-year olds compared to 10 to 11-year olds. • Systematic variability was present for 12 to 15-year olds in the 40-yard dash, but was not present for any other variable. • Relative reliability was greater than zero, and ranged from 0.78 to 0.96.