I did my first pull up test (palms out) today and did 18 pull ups in a minute, 15 in a row though.
I also found this article on livestrong.com talking about the average pull up.
Pull-ups are an exercise traditionally used to measure upper body strength and endurance. The pull-up is performed by gripping an elevated straight-bar with an overhand grip and pulling up so that your chin is at bar level. The average number of pull-ups a man can do typically depends on his current age. Pull-ups strengthen and improve the physique of your back, biceps and forearms when used for exercise.
The President's Council on Physical Fitness and Sports states that the 50th percentile for pull-ups for males ages 6 to 12 are 1 to 2 full repetitions. Specifically, boys ages 6 to 9 are expected to perform 1 pull-up for the 50th percentile while boys ages 10 to 12 are expected to perform 2 pull-ups.
The President's Council raises the number of pull-ups required to meet the 50th percentile for teenagers by several repetitions. Thirteen-year-old males are expected to perform three pull-ups. Fourteen-year-olds are expected to perform 2 more reps for a total of 5 reps for meeting the 50th percentile. Fifteen-year-olds are expected to complete 6 reps; while 16-years-olds should do 7 reps, and 18-year-olds do 8 reps.
Males over the age of 18 are expected to perform 8 repetitions of pull-ups to be classified as in "borderline shape" according to the President's Council. The average number of pull-ups a male can do begins to decline around the 31 to 50 age bracket, and is normally associated with a decline in physical activity and an increase in weight.
Military pull-up averages and standards depend on branch of service and level of fitness required for the specific assigned duty. Enlistees into the United States Marine Corp must be able to perform at least 3 pull-ups; however, a score of 50 percent is met with a total of 10 pull-ups completed.
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