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Power Resistance
Power Trainig Explained Part 3
When extra resistance is added to a sport movement, the athletes motion will be altered, so take car when applying the techniques mentioned in this article to fine motor movements like the golf swing. monitoring of the movements by a trained kinesiological eye is recomended to avoid developing faulty movement patterns.
Types of power training:
plyometrics.
Plyometrics is characterized by resistance exercises involving the stretch-shortening cycle of the muscles involved in the exercise. a good example of this is the depth jump. In this exercise an athlete jumps from a predetermined height, such as a stool. At ground contact the body forces the legs to bend or flex at the hips, knees and ankles, producing a stretch of the leg extensor muscles. Then, without any pause the athlete rebounds as explosively as possible bring about leg extention as a result of the contraction of the leg extensors. The higher the height used the greater the load placed on the muscles. Most plyometric movements are body weight exercises. Plyometrics is about the stretching of muscles under load and then an explosive rebound contracting the same muscles immediatly. A simple google search will yield many sport specific examples of plyometric exercises that you can incorperate into your program. Plyometric exercises are extremly useful in the development of reactive speed at strength or power.
Power endurance
Power endurance is characterized by the maintanace of high power output over time. The idea is to increase the ability of the athlete to sustain high power output for as long as possible. A good example of this kind of training is when a cyclist enguages in hill sprint training. The resistance applied is a modest one compared with heavy load power training but intense to maintain for a longer time with explosive leg cycles.
General power
General power training is characterized by explosive movements during the lifting phase of an exercise. Remember as discussed earlier in this article series any traditional exercise can be turned into a power exercise by applying, the appropirate technique, resistance load ,set combination, times per week and recovery period used with general power training.
When implementing power training into a periodized or progressional athletic pre-in season training program it should be comenced in the mid pre-season stage with less volume and intensity and progress and peak at the most important event or fixture during the in season stage. It should then be tappered off to final omission in the post season stage of the program.
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About the Author
Sheldon Kuhn is an exercise specialist in personal training and sports conditioning and a former premier fitness college lecturer. Get more information on <a href="http://exercisehealthier.com">weight less program</a> and<a href="http://exercisehealthier.com">fitness for less</a> by visiting<a href="http://exercisehealthier.com">exercisehealthier.com</a>
Given resistance, power, time (in seconds), and energy, how do you find temperature increase?
The element is being use to heat a kettle containing 1.20 kg of water. Assume that 70 percent of the heat is absorbed by the water. What is the water's increase in temperature during the 28.0 s?
___°C
The power generated by the element is V²/R, where V is the applied voltage and R the resistance. 0.7 times this is absorbed by the water. The power into the water is then
0.7*V²/R
for V in volts and R in ohms, this is watts, or joules/sec. In 28 seconds, the energy is
E = 0.7*28*V²/R
the water's increase in temperature is given by
E = cp*m*∆T,
cp = specific heat of water = 4.18 J/gºC
m = water's mass = 1200 g
0.7*28*V²/R = 4.18*1200*∆T
∆T = 0.7*28*0.7*28*V²/(R*4.18*1200) ºC (same as ºK for temp change)
Insanity Workout Review | Day 3 - Cardio Power and Resistance