Garmin announced some new running watches recently. However, I just replace my running watch from Forerunner 910 XT to fenix 3 HR about 6 mounts ago. It is good enough for me for now. Today, I introduce one of my usage of fenix 3 HR. There are functions to estimate my VO2max and Lactate threshold. This function is not supported in Forerunner 910XT.
As I posted before, I went to Taiwan last month. The second day, I resumed running over there. However I got injured during the training. I tipped and tried to recover. However, my right leg got some unexpected force and probably my muscle got injured. Due to the injury, I stopped running since April 17 till Wednesday last week. It's been a month. The first week was really bad. I had really bad pain even if just walking. It did not happen when I was young at least 5 years ago. I guess my body is not strong like before due to aging.
My leg right after the injury
(you can see internal bleeding)
Because of the injury, I stopped running for a month. I still feel something strange on my left leg, but I resumed running since last Wednesday with really slow jog around 3km.
Then one of interesting function in fenix 3 is estimating VO2max and Lactate Threshold. Those functions are supported in "fenix 3 HR" and newer high-end model. Many running watches from Garmin supported VO2max, but supporting Lactate threshold function is still limited to the high-end models.
VO2max last 6 months
Here is the trend of my VO2max. Before the injury, it was around 43[ml/kg/min]. But after resuming running, it was dropped to 36[ml/kg/min]. Previous trend was staying more than 40, but just stopped running for a months, the number is significantly dropped.
Lactate Threshold (Heart rate / pace)
The next plot is Lactate threshold. The heart rate was slowly up from 160[bpm] and the value right before the injury was 163[bpm]. After resumed, it was slightly dropped to 162[bpm]. The pace was 5 minutes 30 seconds / km right before the injury. Then, it was dripped to 5 minutes 47 seconds / km. For this trend, I guess it might be hard to conclude the performance is getting worth. But I think a little performance drop could be true.
The both value has not been improved in 5 days. At least VO2max is significant drop after the injury.
Anyway, after age 50, the performance drop due to no training is getting bigger than at least 5 years ago (age 45). Thinking about the fact, to keep a good performance, the best way is not get injured. What I watch next a couple months will be checking the both value how I can improve the performance getting back before the injury, especially how long I need to take. This date is probably very interested in how my training help to improve the performance. Showing a number is a good scale to tell my performance and the result of the training. I think it is very good feature to motivate daily training and monitor the progress.
(To be continue)