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Training diary and random remarks around my rowing
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Feb 25 2017

Friday – cycling / Saturday – planning

Friday

Cycled to work and cycled back.

Strong headwind in the afternoon (and a slight tailwind in the morning).

I also installed PyRow on a Raspberry Pi and rowed 100m on the Concept2 erg to test it. It worked flawlessly through the USB interface and a short CSV file was the result. So I have another small project, to adapt PyRow to record more metrics and produce a CSV file compatible with Rowsandall.com. If I get them interested, I want to involve my sons in the project. The Pi is ideal to show how a computer is built, and how computers communicate.

PyRow also shows the strength of open source. I was up and running in 15 minutes, and I have plenty of ideas to implement, which will flow back to the original PyRow, and thus can be of use to many other people.

Well, so far it’s just ideas.

Saturday

Also just an idea, so far, is the following:

Today we had our annual member’s meeting at the rowing club. My club, CVK Brno, has two locations. The lake venue is where we have most of our boats, the club house, the erg room, and where we train.

We also own the original venue on the Svratka river, a few kilometers downstream from the lake. There is the original club house, which is now rented to an outdoor clothes store, and a few old hangars. In the summer, we rent the garden to a company that commercially exploits dragon boats.

The entire area around the river is interesting. There are a few rowing and canoe club houses (some of them abandoned). One of the main ring roads, a tram line and the river fight for space:

The city council is now making serious plans to revitalize the whole area, and the club has to decide whether to hop on this boat or not. Here is one of the plans, putting the traffic and the tram partly in a tunnel. Our club house is in the top of the image, before the bend in the river.

Here is a visualization seen from the north, with our club house among the other historic club houses to the left of the small bridge in front of the picture.

This is how the road and tram are almost pushing into the river today. The river is on the right. The road is too narrow and is one of the main problem points with long traffic jams every day, so it has to be widened, but between the river and the hill there is almost no place. So that is why they are talking about a tunnel.

One of our ideas is to renovate the old club house, depicted below on an old photo, and turn it into our main place to do land training. There would be a gym with ergs, bike trainers, and treadmills.

Talking of old club houses, next to our club house is an even older rowing club house, which is now abandoned.

The picture is from the early 20th century, and now the building looks like this:

Not a very good shape, but this building is under monument’s protection, and one of the ideas is to make it into a small museum about rowing.

All of this are really plans for the coming 5-10 years, and they are just visions, and nobody knows what is really possible, but if we make the wrong decision now, we may not be part of the planning, and an opportunity may be lost.

Actually, tomorrow I plan to row from this location.

The lake is still frozen and it looks like it will take another month before the last ice is gone. So this morning I mounted my new Empower Oarlock and did all the calibrations, and then I prepared the single on the trailer. Tomorrow, I plan to move the single to our river venue and row from there, until the ice thaws on our lake.

By the way, the mounting and calibration of the oarlock too no more than 30 minutes, and I had to check on the great YouTube instruction video only once.

By sanderroosendaal • Uncategorized • 13 Comments • Tags: cycling, OTW, rowing, training

bokeh_plot (15)

Feb 23 2017

Power at 17spm

Today’s workout was another interesting one:

5x(6x15strokes on / 10 strokes off)/5 minutes rest. Drag 145. Stroke rate 17spm

My Masters team mates warned that this is a “very heavy” workout. So after another long day at work, I went down to my erg cave. Tired, but curious.

I did a 1500m light warming up without any fast strokes. Then set the drag to 145 and started a “Just Row”.

After the first interval I took a piece of paper and wrote down a row of numbers 1 to 5 and another row of numbers 1 to 6. Then I took two coins and placed one on the 1 in the top row and the other one next to the 1 on the bottom row.

After each 15 strokes “on”, I moved the bottom coin to the next number.

The only way for me to count the number of intervals and sets. Counting to 15 and 10 was hard enough.

Here are some stroke stats:

Pace-wise, I paddled the 10 strokes at a very light pace, and the “on” strokes got down to 1:54, but usually were between 1:56 and 1:58. It took about 10 strokes in each set to get below 2:00 pace.

It wasn’t very hard, and I was surprised how fast the first 10km passed. Perhaps I was doing something wrong? Perhaps I should pull harder?

Doing the flex charts I made an interesting discovery. The average/peak force was unusually high for me. Normally it is around 0.56 or 0.57. Today it was significantly higher at 0.62. Most of the following plots are made on rowsandall.com by selecting only the strokes below 18spm:

ON strokes only
Including rest strokes (19-20spm)
ON strokes only
ON strokes only
ON strokes only
ON strokes only
ON strokes only
Including rest strokes

Not sure about this workout. Let’s see. Either I did it wrong, or I wake up tomorrow with a 10% increase in leg strength.

By sanderroosendaal • Uncategorized • 3 Comments • Tags: concept2, erg, low rate, OTE, rowing, strength, training

Feb 22 2017

February CTC (10×90″/30″)

Well, that was painful.


Workout Summary - media/20170222-2000230o.csv
--|Total|-Total-|--Avg--|-Avg-|Avg-|-Avg-|-Max-|-Avg
--|Dist-|-Time--|-Pace--|-Pwr-|SPM-|-HR--|-HR--|-DPS
--|04931|20:00.0|02:01.7|244.4|26.8|170.3|181.0|09.2
W-|04129|15:00.0|01:49.0|274.0|27.9|169.9|181.0|09.9
R-|00813|05:00.0|03:04.6|110.8|22.5|172.9|181.0|02.4
Workout Details
#-|SDist|-Split-|-SPace-|-Pwr-|SPM-|AvgHR|MaxHR|DPS-
00|00417|01:30.0|01:47.8|268.6|27.8|145.1|163.0|10.0
01|00408|01:30.0|01:50.2|270.8|27.1|162.0|169.0|10.0
02|00407|01:30.0|01:50.7|261.7|26.9|166.9|172.0|10.1
03|00414|01:30.0|01:48.6|268.6|26.9|169.5|173.0|10.3
04|00415|01:30.0|01:48.5|283.5|27.8|171.7|177.0|10.0
05|00414|01:30.0|01:48.6|272.2|27.3|175.2|179.0|10.1
06|00411|01:30.0|01:49.5|273.3|27.0|175.9|180.0|10.2
07|00415|01:30.0|01:48.5|278.9|28.7|176.7|180.0|09.6
08|00415|01:30.0|01:48.6|279.4|29.1|177.5|181.0|09.5
09|00413|01:30.0|01:48.9|282.8|30.2|178.4|181.0|09.1

The training plan called for a 50 minute gentle run. I came home very late and had 4 performance reviews today, one of which was a very tough one.

Also, I wanted to get the CTC out of the way, and with a 2km warming up and a 2km cooling down, it would be a short workout.

Short but painful. I aimed for 1:49 pace. The 30 second “rest” is just enough to make you go harder than if you would row this without breaks, and you pay for it after 3 or 4 intervals.

A bunch of stroke metric plots:

SPM kept going up faster and faster. Power just slightly
Expected to see a bigger drop in work per stroke at the higher rates. This is not bad
Strokes got a bit shorter during the workout
The force ratio dropped as the power and SPM increased

And here is the correlations table:

You can see the strong negative correlation of stroke rate and average/peak force ratio. I would also like to point out the strong positive correlation between Work per Stroke and stroke length. A fact we all know but forget as soon as we sit down on the erg.

Finally, a few cumulative statistics. I am building the map of New Zealand by plotting power vs stroke rate. Stroke Force Ratio is pretty constant across stroke rates. 

Past year
Past 10 days

You can also see that in the past 10 days I have done a bit more speed work, compared to the past year.

I nearly fainted after completing the workout. This is a real hard one, especially on a day with a few performance reviews.

By sanderroosendaal • Uncategorized • 1 Comment • Tags: concept2, ctc, erg, OTE, rowing, training

myimage (63)

Feb 21 2017

Team workout

Armed with my iphone connection kit and a 30-pin to firelight (or firewire or wirefire, whatever), I took to the rowing club. I want to get into the habit of doing one or two sessions per week with the other Masters rowers. It is good to train with others.

It is also unusual. The erg room is hot and sweaty, not like my gloomy but nicely cool rowing cave. There is other music. But mostly, you are rowing next to other guys and there is the peaking on each other’s PM’s factor.

Today’s training was 3x15min/4min with the 15min at 20spm, but every fifth minute at 24spm. We rowed in sync.


Workout Summary - media/20170221-1825230o.csv
--|Total|-Total-|--Avg--|-Avg-|Avg-|-Avg-|-Max-|-Avg
--|Dist-|-Time--|-Pace--|-Pwr-|SPM-|-HR--|-HR--|-DPS
--|13178|57:05.0|02:10.0|172.1|17.6|0.0|000.0|13.1
W-|11320|45:00.0|01:59.3|206.8|21.2|000.0|000.0|11.9
R-|01861|12:05.0|03:15.0|001.0|00.1|000.0|000.0|382.8
Workout Details
#-|SDist|-Split-|-SPace-|-Pwr-|SPM-|AvgHR|MaxHR|DPS-
00|03814|15:00.0|01:58.0|212.5|21.0|000.0|0.0|12.1
01|03759|15:00.0|01:59.7|204.9|21.2|000.0|0.0|11.8
02|03747|15:00.0|02:00.1|203.0|21.3|000.0|0.0|11.7

The plots are a bit weird. I was hesitating if I would add a fourth interval or not. In the end I couldn’t convince Martin (gasping for air) and Tomas to do it, but I did a few strokes into a fourth interval. Painsled didn’t like that really.

I also discovered that the PM3 doesn’t send the cool metrics like drive force and drive length over the USB connection. Messes up the stats.

As I don’t have a Polar heart rate connector, I recorded my heart rate separately on the Garmin Forerunner. Quite high heart rates. I didn’t much like this workout. Too low stroke rate for me.

By sanderroosendaal • Uncategorized • 4 Comments • Tags: concept2, erg, OTE, rowing, steady state

lelekovice-web-85

Feb 19 2017

Recovery run

I had to stay on the roads. The forest is still not runnable. Ice and snow and icy snow. And mud.

It was a nice run. Originally planned to go out for just 8km, but I always prefer running a loop over running the same way back, so in the end it was almost 13km.

I just threw my running into fifth gear and enjoyed my stream of thought. Rewinding yesterday’s races and some stuff related to the rowsandall.com site.

By sanderroosendaal • Uncategorized • 0 Comments • Tags: cross-training, running

empower

Feb 19 2017

Under 7 minutes again – ErgoShow Race Report

What a relief. I prolonged my membership of the sub-7 minutes group yesterday, at the “ErgoShow”.

The ErgoShow was an indoor rowing event. The main part of the event was the Czech Indoor Rowing Championships, but they had fun events around it. For Masters, there was a 1k race in the morning (to which I didn’t participate) and they had University Fours. Four ergs slides connected together, racing over 4 minutes. The sum of the four distance scores is the score of the four. Teams of different universities rowed against each other in this format.

They also had live broadcasting over YouTube and a very good commenter. In the morning, I followed the races from my living room. I ended up cheering to the computer monitor when my daughter Lenka rowed her race.

Just after lunch, one of the other Masters at our club, picked me up in his minivan. A quick round through Brno to pick up the others and we were on our way to Hodonin, a 1 hour drive south of Brno.

The venue was really nice. There was a warming up room with lots of ergs, a separate cooling down room with lots of ergs and bikes, and the main hall with two stages full of ergs. Another nice detail was lots of places where you could refill your water bottle with a sports drink for free.

I made a quick stop at the Concept2/NK booth to pick up some goodies:

Yes – my own Empower Oarlock. Too bad there is still 40cm of ice on our lake.

I also got an iphone connection kit. Unfortunately, I was already too focused on my race, and didn’t check it. At home, I found out that they had given me a connection kit for the iphone 4, which has a different connector than my iphone 5. Well, trainings at the club will remain unconnected for a while.

Concept2 did ask me if I could come around for a chat after the races.

Now it was less than an hour to my scheduled racing time. Time to change clothes and hop on one of the warming up ergs, a model D with a PM3.

After about 6km of Fletcher-like warming up (I can never remember the exact durations and paces, but I think I get it sort of right) it was time to visit the bathroom and some other confused running around. By the time I was done with that, it was 10 minutes to the scheduled time for my race.

A few minutes to get the footstretcher and drag factor set to my favorite settings and do a few strokes to test the erg, and then it was Ready – Attention – ROW! (Actually we did get to do that twice, because someone – not me – caused a false start.)

Again an unconnected row. I just have the Strava heart rate record from my Garmin watch:

On the monitor next to the erg I could see that my little boat was in the back of the pack. I knew this was going to happen and I actually rowed my own race. After the first few starting strokes I found myself at 1:39, with an average of 1:46. I continued conservatively, pulling 1:45/1:46 1:46 with the occasional 1:44 in the first 800m (I was mentally doing 1:46, but there were enough strokes at 1:45). At 1200m to go I switched to “1:45” (i.e. I banned 1:46 strokes). Rowed down to 900 to go, then to 600 to go, at which point I started pulling 1:44. With 300m to go I went all out. There was a guy who was 8m ahead of me. I nearly got him, but in the end he finished 2 seconds earlier.

No drama, really. Even though I wondered whether there was more in the tank, I was glad I paced conservatively. After my 7:09 debacle I wasn’t sure if I was in sub-7 shape. Actually when my competitors asked what I was aiming for, I jokingly answered that I would go for 6 minutes and 60 seconds.

The “quick chat” at the Concept2 booth started with “Why haven’t you told us about your project?” and it turned into a slightly longer, friendly chat. At one point my team mates threatened to leave without me, so I had to stop chatting and jump in the car back to Brno.

Here are the full results in the Masters category. Our Jiri Pfeifer rowed a nice row for a 51 year old (6:23.9). My race was won by Karel Nevrala. He moved to live with his Mix 2x partner, who now also is his girlfriend, and both of them have taken to train very hard. Romana and I beat them in the Mix 2x a couple of time, but she rowed a 6:57.6 yesterday, so she nearly chicked me.

My end time was 6:57.5 (just 1.9 seconds above my Masters PB of 6:55.6). Here are the splits according to the PM:

1st 500 – 1:45.4 – 31SPM

2nd 500 – 1:45.0 – 31 SPM

3rd 500 – 1:44.0 – 31 SPM

4th 500 – 1:43.2 – 33 SPM

Unfortunately, I cannot look at my race on YouTube any more because the Warner Music Group has blocked it for copyright reasons. Yes, there was background music played at the venue!

By sanderroosendaal • Uncategorized • 4 Comments • Tags: 2000m, 2k, concept2, erg, OTE, race, rowing

bokeh_plot (96)

Feb 17 2017

Sharpening

8km in total. A few 15 stroke bursts and 350m at 2k pace. Pace came easy today. I went slightly faster than my anticipated pace.

Tomorrow: Race day. A 2k erg race in the Masters category.

By sanderroosendaal • Uncategorized • 1 Comment • Tags: 2k, concept2, erg, OTE, sharpening

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