Anyone use treadmills?

[Elle-j]

I have been using the gym since September at university and my workout includes burning 300 calories walking at 15% incline at 5.5mph and I reduce this little by little as I feel necessary (takes me 26 mins) and I spend ten minutes on a bike which burns about 50 cals. The last two times I've been on them though my heart rate has been all over the place. Its usually between 134 and 160 when I get going but then dropped to 78, then 48 which panicked me a bit as I hadn't slowed down, the numbers then rose gradually back to 78 then I felt a little jump in my chest and it went back to 134. Needless to say I slowed down after that and on the bike my heart rate started at 114 and then stayed at about 134 till I finished. Are they just dodgy machines or should I be worried? Theyre only a year old. I'm asthmatic but never suffered an attack - touch wood - but I did panick for a short while at the gym. I just googled what your heart rate should be though and it said 40-100 at rest so Im not dying but any advise I would be very gatefull for.

[Penel]

Talk to your doctor if you are concerned. Bear in mind that your body is not a machine.

[Jackie_M_Reid]

Hi Elle-j,

I use treadmills and the bike at the gym a lot.

I rough rule of calculating what you heart rate should be is 220-your age=training heart rate. For example I'm 52 so my training heart rate is 220-52= 168.

However I think your best bet would be to speak with one of the staff in the gym who will work out a program for you focusing on what you personal goals are.

[Elle-j in reply to Jackie_M_Reid]

Im 22 so that would make my training heart rate 198. Didn't think it was good to go that high. Asking the gym staff is a good idea thank you. Im starting to think it might be to do with stress and anxiety now however as it happened yesterday when I wasn't even working out. My doctor is useless but I will definitely be asking my nurse when I visit her later in the month. Thanks for the replies

[FitnessLover]

I would contact the doctor as well. You should never joke too much with your heart rate.

I personally use a treadmill and there are some great ones around. While searching for your answer I found this review: your-workout-routine. (remove space) com/cardio/best-treadmills-2014/