Saturday, March 28, 2009

WHAT IS A FIXED GEAR BICYCLE

What is a Fixed-Gear Bicycle, and Why Would You Want One?

Thought i would share some light into my new found passion.

The oldest and simplest type of bicycle is the "fixed-gear" bicycle. This is a single-speed bike without a freewheel; that is, whenever the bike is in motion, the pedals will go around. You cannot coast on a fixed-gear machine.

Any enthusiastic cyclists ride such bicycles by choice, at least part of the time. Why would anybody do that? It is not easy to put into words. There is an almost mystical connection between a fixed-gear cyclist and bicycle, it feels like an extension of your body to a greater extent.

Fixed for Fun
When you ride a fixed gear, you feel a closer communion with your bike and with the road. There is a purity and simplicity to the fixed-gear bicycle that can be quite seductive. Somehow, once you get past the unfamiliarity, it is just more fun than riding a bike with gears and a freewheel!

Fixed for Fitness and Form
Riding a fixed gear on the road is excellent exercise. When you need to climb, you don't need to think about when to change gears, because you don't have that option. Instead, you know that you must just stand up and pedal, even though the gear is too high for maximum climbing efficiency. This makes you stronger.

If you have the option of gearing down and taking a hill at a slow pace, it is easy to yield to the temptation. When you ride a fixed gear, the need to push hard to get up the hills forces you to ride at a higher intensity than you otherwise might. Really steep hills may make you get off and walk, but the hills you are able to climb, you will climb substantially faster than you would on a geared bicycle.

When you descend, you can't coast, but the gear is too low. This forces you to pedal at a faster cadence than you would choose on a multi-speed bicycle. High-cadence pedaling improves the suppleness of you legs. High rpm's force you to learn to pedal in a smooth manner, if you don't, you will bounce up and down in the saddle.

Most cyclists coast far too much. Riding a fixed-gear bike will break this habit. Coasting breaks up your rhythm and allows your legs to stiffen up. Keeping your legs in motion keeps the muscles supple, and promotes good circulation.

Join the Movement Efects team and go fixie!!!!!

COOGEE KETTLEBELL KILLER - 1000 REP CHALLENGE

This morning the Movement Effects Training team set out to smash a new challenge.

Welldone Jim, Kez, Vik, Phil and Rich for pushing yourselves mentally and physically to new limits.

The following is the prescribed work out of the day.

1km Soft sand run
200 Swings
200 Push ups
200 Sumo squat high pulls
200 Sit ups
200 Push Press
1km Soft sand run

This was BRUTAL!!!!!!

Wednesday, March 4, 2009

RESISTANCE TRAINING AND THE EPOC EFFECT

Introduction

After cardiovascular exercise or weight training, the body continues to need oxygen at a higher rate than before the exercise began. This sustained oxygen consumption is known as excess postexercise oxygen consumption (EPOC). Originally referred to as an oxygen debt, this postexercise state was first hypothesized by A.V. Hill and H. Lupton in 1922. Hill and Lupton theorized that the body needs to replace the oxygen used by working muscles during mild to intense bouts of exercise. More recently, researchers have used the term EPOC to describe the several different events that occur as the body restores itself to homeostasis, or rest.

This article will describe the physiological factors that contribute to EPOC and discuss its relation to weight management.


EPOC Overview

Body: During EPOC the body is restoring itself to its pre-exercise state, and thus is consuming oxygen at an elevated rate. This means that energy is also being expended at an elevated rate.

The following occurs during EPOC:

1) Replenishment of Energy Resources: Replenishment occurs for the immediate source of energy, known as the phosphagen system, which is comprised of creatine phosphate and ATP (adenosine triphosphate). In addition, lactate, a molecule that is produced during more intense exercise, is being converted to pyruvate for fuel utilization. The body is also restoring the muscle glycogen (a stored form of glucose) that has been used during the exercise bout.

2) Re-oxygenation of Blood and Restoration of Circulatory Hormones: During exercise metabolism, large amounts of oxygen are used to break down food substrates for energy. Therefore, the body continues to expend energy after exercise to re-oxygenate the blood. In addition, in the postexercise period, the body restores the levels of circulatory hormones, which increased during exercise, to normal.

3) Decrease in Body Temperature: As energy is liberated from the exercising muscle tissues of the body, heat is produced. Thus, during EPOC, the body must expend energy to return to the normal core body temperature.

4) Return to Normal Ventilation and Heart Rate: Energy expenditure is greatly elevated as the body rapidly returns to a normal breathing rate. Heart rate is also returning to a pre-exercise rate.


EPOC and Weight Management

Because the body continues to expend energy after exercise, EPOC plays a supplemental role to an exercise program in weight management. Currently, researchers are interested in the effect different forms of exercise have on EPOC.

The evidence suggests that a high-intensity, intermittent-type of training (interval training) has a more pronounced effect on EPOC (Haltom et al. 1999). Also, it appears that resistance training produces greater EPOC responses than aerobic exercise (Burleson et al. 1998). The research suggests that high-intensity resistance exercise disturbs the body’s homeostasis to a greater degree than aerobic exercise. The result is a larger energy requirement after exercise to restore the body’s systems to normal (Burleson et al. 1998), and thus an explanation for the higher EPOC.