I've started roller skating on Saturday nights again. This week I knew I was going to be sluggish as I rode to/form work two days in a row just before. During my warm-up I started to notice my left skate acting strange. At first I thought maybe the wheels were over torqued, but as I started adjusting them I saw that my truck had broken. The rink had a replacement, but at some point the industry switched from 7 mm to 8 mm axles as the standard. So I needed four new bearings as well as an axle and truck. At some point I will have to switch my other trucks and bearings so they match, but my skate was repaired and I returned to the floor.
The last time I skated regularly I was burning 2,500 Calories in just shy of 3 hours. Last week I did that without issue but I was questioning my heart rate monitor because it was showing rates over 190 BPM. This week I skated an entire song at around 192 BPM. At my age, this is 107.2% of my maximum heart rate. This bests my previous noted
high rate of 101.6% when I noted I burned 100 Calories in around 5 minutes. During this song, one of the other skated, a younger tall guy on roller blades was trying to keep up. He asked me afterwards how I can move so fast. I don't actually know the answer. My only thought is that long strides with high torque. My performance has clearly improved since 2016, but not because I've been skating.
The one fast song was the only one I really pushed myself for. I finished the night with 2,238 Calories, far short of the 2,553 I burned last week. I lost 15 minutes for the broken truck, but mostly it was my fatigue that didn't allow for higher performance.