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A typical 5k runner might consider 8 to 10 miles (13 to 16 km) of LSD, while a marathoner might run 20 miles (32 km) or more. LSD runs are typically done at an easy pace, 1–3 minutes per mile slower than a runner's 10k pace. The objectives of these runs are to build blood volume and to increase muscle strength, endurance, and aerobic fitness.
A pacemaker or pacesetter, sometimes informally called a rabbit, [1] is a runner who leads a middle- or long-distance running event for the first section to ensure a high speed and to avoid excessive tactical racing. Pacemakers are frequently employed by race organisers for world record attempts with specific instructions for lap times.
The general relationship between absorbed dose and equivalent dose can be represented as. H = Q ⋅ D. where H is the equivalent dose, D is the absorbed dose, and Q is a dimensionless quality factor. Thus, for any quantity of D measured in Gy, the numerical value for H measured in Sv may be different.
The marathon was conceived centuries ago and as of recent has been gaining popularity among many populations around the world. The 42.195 km (26.2 mile) distance is a physical challenge that entails distinct features of an individual's energy metabolism. Marathon runners finish at different times because of individual physiological characteristics.
Middle-distance running events are track races longer than sprints, ranging from 500 metres up to two miles (3218.688 metres). The standard middle distances are the 800 metres, 1500 metres and mile run, although the 3000 metres may also be classified as a middle-distance event. [ 1] The 1500 m came about as a result of running 3⁄ laps of a ...
An ultramarathon, also called ultra distance or ultra running, is a footrace longer than the traditional marathon length of 42.195 kilometres (26 mi 385 yd). Various distances, surfaces, and formats are raced competitively, from the shortest common ultramarathon of 31 miles (50 km) and up to 3100 miles. [1] World Championships are held by the ...
A pace is a unit of length consisting either of one normal walking step (approximately 0.75 metres or 30 inches), or of a double step, returning to the same foot (approximately 1.5 metres or 60 inches). The normal pace length decreases with age and some health conditions. [1] The word "pace" is also used for units inverse to speed, used mainly ...
In the 800 meters, the fastest times have almost always been achieved with a positive-split strategy. A study of 26 world-record 800m races from 1912 to 1997 showed that in 92% of the fastest 800m races, the first half of the race has been run faster than the second half. This implies that the optimal strategy for the 800m is a positive-split.