At the gym

I joined our local gym today. I was going to try to hold off spending the money, but pounding the pavements was starting to take it's toll on my joints. Whilst I was unfit, hauling my ass round our little town was exercise enough, but all that walking over the last eight weeks has improved my fitness quite surprisingly. I found that I wasn't able to push myself or my heart rate into the ideal fat burning zone by walking. The pace I need to reach now puts too much stress on my overloaded joints and spinal injury.

The cross trainer, pictured to the right, is a great bit of kit. It gives a whole body workout without the jarring impacts of a treadmill or pavement or the numb butt of the exercise bikes. The fluid elliptical movement of your feet is similar to running and works the same lower body muscles. The longer two pole handles are linked to the foot plates and allow you to push and pull working you upper body. You can also let go of the handles altogether and work your core muscles as you constantly adjust your balance whilst moving.

The machine also has several resistance settings, that mean you can use it as a warm up exercise, as your main workout or as a cool down machine. Personally I use it as my main workout as I walk to and from the gym as a warm up.

For my main workout I did 3 fifteen minute sessions. Each session I set the machine at a low resistance and pace myself so that my heart rate holds steady at 120 bpm for five minutes. I then double the resistance and pick up the pace for a minute, pushing my heart rate out of the aerobic zone, up to 150 bpm into the anaerobic zone for one minute, then drop the resistance and speed, so my heart rate drops back to 120. After two minutes at 120 bpm, I repeat the faster pace etc until I've completed 15 minutes. I take a short 3 minute break, grab some water and then repeat the exercise again.

I based the workout on interval training, although at a slightly more relaxed pace and intensity, as I'm guessing workout facilities in the local heart attack ward are a little sparse. You calculate your maximum heart rate by subtracting your age from 220. The idea fat burning zone is 55 - 65% of your maximum, the anaerobic zone is between 65-75%. Shorter sessions of interval training has been shown to be more effective than spending hours plodding along on the treadmill. Ideally it should be one minute at high intensity, then two at a lower intensity for about 30 minutes. Although my fitness level has improved significantly, I'm no where need ready for very intense levels.

As my fitness levels improve, I'll up the intensity of the intervals to maintain the optimal fat burning effects. As my core strength improves I'll be able to add weights into the workout to push the muscles that don't get pushed hard enough on the cross trainer.