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Training diary and random remarks around my rowing
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Oct 7 2018

More traveling – the voice of the water

Thursday, September 27th

I flew to Brussels and ended up doing some work in my hotel room, too lazy to go find a swimming pool or hit the hotel fitness.

Friday, September 28th

I did hit the hotel gym and it was a good 90 minutes session. Not bad. Weights training mainly but I did a long warming up on the treadmill and elliptical.

After my meetings in Brussels, I took a train to Antwerp and had dinner with my sister. I staid over at her place, taking the opportunity to do some laundry as well.

Saturday, September 29th

No training. I took a train to my parent’s place. It’s quite a long ride from Antwerp. First the Benelux train to Amsterdam Schiphol Airport and then an intercity train to Enschede.

It was a nice trip though. I liked watching the familiar flat landscape, and crossing the big rivers between the South Netherlands and the North Netherlands is always spectacular, especially the wide river at Hollands Diep (Rhine and Meuse estuary).

The familiar flat landscape
Crossing Hollands Diep

It was my mother’s birthday, and we had a good time chatting on the terrace in the autumn sun. We also went for a 2×40 minutes hike, interrupted by a tea break, and we had dinner together.

Sunday, September 30th

I said goodbye to my parents and took a train to Zoetermeer, close to The Hague, to visit Ele Jan, an old rowing friend, and his family. In the afternoon we went to the Rijnland rowing club, now on a new location, and went out rowing. Ele Jan, Ad and myself. We took a C 3x, a boat type that I haven’t seen outside The Netherlands. It’s basically a touring type boat, wider and heavier than a standard shell. These boats are sturdy. They are not exactly coastal boats. Here’s a picture of a typical C boat:

It was good we took the C boat. It was a glorious, sunny Sunday afternoon, and about everyone in Leiden, Voorschoten and Leidschendam were taking their motor boat for a tour. We were constantly washed by their wakes, and we needed the extra stability of the C boat to be able to row through the waves.

Tuesday, October 2

On Monday I took a train to Vught where I would take part in a three day management training course. I went for a run on Tuesday morning but didn’t do anything on Wednesday.

It was quite dark at 6am, so I had to stay on the town streets and couldn’t run in the forest.

On Wednesday evening I took a train to Amsterdam. Took another picture of a river crossing from the train.

“Holland … wide rivers flowing slowly through endless low lands.” That’s from the start of a famous poem by Henri Marsman. Here’s an English translation:

Thinking of Holland

I see broad rivers

languidly winding

through endless fen,

lines of incredibly

tenuous poplars

like giant plumes

on the polder’s rim;

and sunk in tremendous

open expanses,

the farmsteads scattered

across the plain:

coppices, hamlets,

squat towers and churches

and elms composing

a rich domain.

Low leans the sky

and slowly the sun

in mist of mother

of pearl grows blurred,

and far and wide

the voice of the water,

of endless disaster,

is heard and feared.

Thursday, October 4

On Thursday, I traveled back home to Brno. In the afternoon I had time to get in a nice Head Race preparation session. It was more or less free form, but the core part was alternating 30 strokes at head race pace with 30 light strokes.

I had forgotten to change the battery in the oarlock, so the power data stopped about 4km before the end of the row.

After the row I prepared my boat for transport and loaded it on the trailer.

No rowing on Friday. A rest day before race day.

By sanderroosendaal • Uncategorized • 0 • Tags: cross training, head race prep, head race preparation, rowing, training

Capture

Sep 26 2018

Running along the river

Monday

No training. I took a car to Vienna, then a flight to Brussels and finally a flight from Brussels to Toulouse. I had dinner in the hotel with colleagues.

Tuesday

Meetings at one of the biggest employers in the city of Toulouse. I work for a supplier to this company and on Tuesday we had a big meeting attended by our vice presidents and those of our customer. We from engineering got to present. I presented my stuff and all was good. Between the meetings and the business dinner, I found some time to go for a run. I had never run from this hotel but by intuition I found a nice river, the Touch as it’s called, and ran 30 minutes along it, then 30 minutes back.

The weather is perfect here in Toulouse, 25 degrees C and fair. The path along the river was nice and shady and ther were many other runners.

Some GPS problems in the beginning make this run look a bit longer than it really was.

Wednesday

Today, I found time between two meetings and did the same run. The only difference was that instead of crossing at a small bridge I stayed on the left bank. That was a mistake, because the path turned to the right and I ended up running on the streets for a few kilometers. Eventually found my way back to the river, followed it for a while and then turned back.

Tomorrow, I will fly to Brussels. I am planning to find some time in the afternoon or early evening for a swim. Need to find a suitable pool.

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

mapka

Sep 23 2018

Sunday – Change of Plans

The plan was to row another hard 6k, but when I arrived at the lake … it started to rain.

The rain didn’t change my plans, but what I saw on the lake did. There was a sailing regatta going on in the south half of the lake, and I didn’t feel like rowing my 6k at speed straight through their regatta. It was also slightly choppy, so going to the cover of the gorge seemed a good idea. I was actually looking forward to a little change of scenery.

So I did. I also changed the workout to a 4x”10min”/”5min” threshold intervals session. The work and rest interval durations are just for guidance, because the plan was to row from the end of the twisty part to the castle (intervals 1 and 4) and from the big turn after the castle to the bridge in Veverská Bítýška (intervals 2 and 3). I have indicated the start and end lines of these stretches in the map below (the black stripes):

I estimated the stretches to be roughly 10 minute intervals with the exact duration depending on the wind, and I would take the rest duration as the time needed to drink a bit and paddle to the start of the next interval, respectively turn the boat.


Workout Summary - media/df_20180923-124012.csv
--|Total|-Total-|--Avg--|-Avg-|Avg-|-Avg-|-Max-|-Avg
--|Dist-|-Time--|-Pace--|-Pwr-|SPM-|-HR--|-HR--|-DPS
--|13922|74:08.0|02:39.7|168.8|23.0|149.2|180.0|08.1
W-|08468|38:08.0|02:15.1|227.1|26.3|167.8|180.0|08.5
R-|05459|35:59.0|03:17.8|107.1|19.6|129.5|180.0|07.5
Workout Details
#-|SDist|-Split-|-SPace-|-Pwr-|SPM-|AvgHR|MaxHR|DPS-
01|02329|10:23.1|02:13.8|232.8|25.2|162.8|173.0|08.9 - tailwind
02|00994|04:15.0|02:08.3|239.5|26.5|161.8|173.0|08.8
02|00946|04:07.6|02:10.8|230.0|26.3|174.1|178.0|08.7
03|01912|08:54.3|02:19.7|227.4|26.9|170.3|180.0|08.0 - headwind
04|02201|10:01.7|02:16.7|216.4|26.9|172.2|179.0|08.1

The interval summaries are created with my “patented” automatic summary generator for OTW rows. You can see it thought I was taking a few strokes rest in the middle of the second interval, splitting a almost 9 minute interval in two pieces of a bit over 4 minutes. There is quite a sharp turn in the middle of that stretch, and with the power meter on the left oarlock that leads to a temporary reduction in power. The world is not perfect.

I was really happy with the session. I was able to hold my target power (230W) for all intervals. The summary does show a lower average power for the fourth interval, but that one had two large left turns. I also enjoyed rowing fast in the narrower part of our rowing water, and having a different view, including the unfamiliar sound of the reeds blowing in the wind.

Technique Wise?

Well, looking at what the Empower Oarlock tells me, all sessions were pretty good except the final one, where it got sloppy. It is natural to row a bit shorter drive length in headwind, but I am worried about the values for Wash:

That’s the red dots in the right-most picture. I was recording the row with the RowP app as well, so let’s look if we can see anything in those in-stroke data. Here’s the first interval (“good”):

The left chart is the seat acceleration and the right chart is boat speed and acceleration. I am showing the average curve for the entire interval, as well as two shorter samples from the start and the end of the row.

Here’s how the final interval (the bad one) looks:

Now tell me if you can see a difference? It’s extremely subtle, but here is what I note:

  • Less consistent acceleration in the last part of the drive
  • A bigger deceleration (boat check) around the catch on the “bad” interval
  • Accelerating into the catch (on the “bad” interval)

It’s too early to draw conclusions, but I am getting less and less convinced of the merits of trying to accelerate the seat into the catch on the recovery.

Planning Wise

This workout marks the end of a training week, and it is probably the last session in my single before the 6k head race of early October. I am going on a long business trip. Here’s how I did this week:

Funny how I underestimated how hard the threshold sessions would be. Especially today’s one seems to have been a brutal one (and I didn’t record the last 1000m because of a full SpeedCoach memory).
I have recently improved the training planning part of the rowsandall.com site, and I can now do summaries for micro cycles (weeks) and meso cycles (groups of three weeks in my case):

The pink card on the left is the plan vs actual for the three weeks. The light blue cards on the right are the individual weeks. I plan the rowing sessions by rScore, which is a score taking into account intensity and duration of the workout. I do actually plan cross trainings by time. You can see that I am getting better adhering to my plan but I am training harder than I planned, except for the first week of this training plan.

By sanderroosendaal • Uncategorized • 0 • Tags: 1x, OTW, river, rowing, single, threshold, threshold training, training

zachranna-akce-tonouci-prehradaBrno_ZZSJmK

Sep 22 2018

The Water is Dangerous

Thursday

A nice technique row in the double with Romana. The weather was nice with very flat water when we launched. The only issue was low visibility because somebody was burning leaves or grass on the other side of the lake, and the smoke cloud covered a large part of the lake.

We rowed up to Rokle, and then back to Sirka through the middle of the lake and through the smoke cloud. Then we turned at Sirka and rowed back. When we were about 1km from Sirka, we saw the fire brigade rushing towards the lake. I thought somebody had called them because of the guy creating the smoke cloud.

A little later, the rescue service and the police sped across the lake in their speed boats. I started wondering. They sped to an area in front of Lodni Sporty rowing club, but then they moved to the beach around the 1km mark, roughly where we were rowing when we first saw the fire brigade.

A few minutes later, a helicopter arrived at the scene. We continued our technical/steady state row to Rokle and then turned. The beach at the 1km mark was now full of police, ambulance, fire brigade, and the two speed boats. At that time we thought it was a drill.

Not true. We were witnessing desperate attempts to save someone’s live.

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According to the news, a person of about 65 years of age was playing with a remote controlled model airplane. The plane fell into the water, and he decided to swim for it. Which cost him his life. Difficult to guess what happened, but a few meters below the surface, the water is not exactly warm.

Of course we didn’t know anything about that when we were rowing, and we were quite happy with the pace achieved at a relatively light pressure. Did I mention the water was quiet and mirror flat?

Friday

I nice weights workout in the gym. I found a free hour in the afternoon and did a thorough weights session. Increased the weights on some of the exercises.

Saturday

A 2km swim followed by a hot tub. We went to Kurim, where they have a 25m pool. I prefer a 50m pool, but this was a nice workout. The water was nice. It was good to be swimming again, and I got a very good workout.

By sanderroosendaal • Uncategorized • 0 • Tags: 2x, double, drowning, OTW, rowing, steady state, training

map

Sep 20 2018

Sander beats a 6k

Wednesday, another 6k effort on the program. I am doing a lot of them in the prep for the Uherske Hradiste regatta, and I am doing a lot of them now because I on Monday I will go on a nearly 2 week lasting business trip.

I had little hope of a good performance this Wednesday afternoon. I had slept well but short, and it has been busy at work. Also, I ate some crappy food on Wednesday afternoon (too salty) and I felt it. So I agreed with myself to not to fuss about it and just treat this as a good threshold training. I also decided to not watch the in-boat monitors (NK SpeedCoach, RowP) too much during the row and row on feel.

I arrived at the start in Rokle simultaneously with a group of Juniors in a pair, double and a single, and our head coach in a launch. They set off ahead of me, and I followed. In the first part I had to pass the guy in the single and then I got in the launch’s wake. Luckily, they stopped to do starts practices at the start of the 2k course, so at that point, about five minutes into the row, I was able to pass all of them and just had to deal with the head wind.

Interestingly, it all worked out great. I was super conscious of not pushing too hard and didn’t fuss when the power values were below 210W. I had a tiny crisis with 2k to go but was able to delay the “counting strokes to distract me” until 1k to go. The final bit of the 6k was into a turn, so the low power is artificial.

I actually didn’t know until after the shower that it had been a quite good row. My workouts were syncing during the shower, and after that, Rowsandall.com sent me a nice email.

Pretty nice! Perhaps I should program those notifications to be sent a little more often.

Here are some comparisons with Sunday’s row:

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And here are some details of Wednesday’s row:

Basically, you are looking at Work per Stroke, average drive force and Wash fade away as I get tired and rate up to keep the pace.

Here are some stats:

Workout Summary - media/20180919-1630480o.csv
--|Total|-Total-|--Avg--|-Avg-|Avg-|-Avg-|-Max-|-Avg
--|Dist-|-Time--|-Pace--|-Pwr-|SPM-|-HR--|-HR--|-DPS
--|06000|27:13.0|02:16.1|212.2|25.3|180.0|187.0|08.7
W-|06000|27:13.0|02:16.2|212.2|25.3|180.0|187.0|08.7
R-|00000|00:00.0|00:00.0|000.0|00.0|000.0|187.0|00.0
Workout Details
#-|SDist|-Split-|-SPace-|-Pwr-|SPM-|AvgHR|MaxHR|DPS-
00|00500|02:18.4|02:18.4|219.4|24.2|159.1|174.0|09.0 -- head wind
01|00500|02:19.9|02:19.9|213.0|23.8|175.4|177.0|09.0
02|00500|02:17.8|02:17.8|218.4|24.8|178.8|181.0|08.8
03|00500|02:20.2|02:20.2|215.2|24.4|180.6|182.0|08.8
04|00500|02:21.1|02:21.1|210.6|24.5|180.8|182.0|08.7
05|00500|02:35.7|02:35.7|199.6|24.0|181.2|184.0|08.0 -- including turn
06|00500|02:10.6|02:10.6|208.2|25.5|180.4|183.0|09.0 -- tail wind
07|00500|02:10.2|02:10.2|210.1|25.5|182.9|184.0|09.0
08|00500|02:10.1|02:10.1|210.9|26.1|185.1|186.0|08.8
09|00500|02:11.6|02:11.6|207.8|26.1|185.2|187.0|08.7
10|00500|02:07.2|02:07.2|223.4|27.7|185.6|187.0|08.5 -- pushing for virtual race
11|00500|02:10.9|02:10.9|211.2|28.4|186.7|187.0|08.1

In interval #10 above, I was also pushing for the virtual finish line of the virtual race on rowsandall.com:

https://rowsandall.com/rowers/virtualevent/307

I am just racing myself here, but managed to improve by 30 seconds. Next time, I should do the turn a bit earlier. I think I rowed about three strokes beyond the entry into the “turn polygon”.

By sanderroosendaal • Uncategorized • 0 • Tags: 1x, head race prep, OTW, rowing, threshold, training

bokeh_plot (48)

Sep 17 2018

Another steady state row – Super Flat Water & Technique study

Another Steady State row in the single. It was beautiful weather. No wind at all. Mirror flat water. Great day to do rate ladders and work on technique.

Paying attention to pace at constant stroke rate I noticed significant speed improvements when focusing on sitting up straight on the catch and making sure I don’t open up the back too early. However, it’s difficult in the boat to check whether the speed gains are because I row at higher Work per Stroke (average drive force, stroke length) when focusing on this or whether I am improving boat efficiency. The following chart seems to suggest it’s primarily a power/length/force thing:

If I look at a measure for efficiency and do the statistics, I find a small positive correlation with:

  • Distance per stroke (logical)
  • Slip (higher value = higher efficiency)

I also find a small negative correlation with:

  • Peak force
  • Peak force angle (i.e. lower efficiency when peak force is closer to the bow)
  • Average force
  • Work per Stroke

I find no correlation whatsoever, i.e. pure random behavior on:

  • Drive length
  • Catch & Finish angle
  • SPM
  • Wash
  • Effective stroke length

It may be that I am pretty constant in drive length, catch and finish angle, but I do think that the stats point towards one thing and that is ramping up the force too fast at the catch. Look at the correlations. Larger slip, lower average and peak force and work per stroke point to a most efficient stroke when I am not pushing too hard. The odd one out here is the peak force angle.

I also used the Quiske pod to measure seat speed and try to correlate that to efficiency. I recorded three full lake lengths, and from each stretch I selected strokes at 20, 22 and 24spm. Here are the charts:

Stroke Rate 20:

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Stroke Rate 22:

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Stroke Rate 24:

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I am glad my strokes are so consistent and all curves look nearly identical, but it doesn’t help with the analysis. Only at 20spm there is a clear difference between the red curve and the two others. The red curve has

  • Lower seat speed early in the drive and a lower boat acceleration early in the drive
  • A shorter period where the seat doesn’t move around the finish

In this chart, in particular the recovery in the blue curve seems inefficient. I am hesitant to look at the boat speeds as I haven’t correlated it to average power yet. I am conscious though that this blue curve corresponds to the first Rokle – Sirka stretch, where I was most fanatical in trying to be slow around the finish (doing a “Drew”). One has to bear in mind though that all this was done at low boat speeds and low stroke rates. At full 1k sprint speed and 35spm the recovery dynamics looks totally different, and both boat drag and seat acceleration are much higher. Still, I am sceptical.

By sanderroosendaal • Uncategorized • 0 • Tags: 1x, OTW, rowing, single, steady state, training

RDMMS

Sep 17 2018

I measured my heart rate variability during a trip to India

Finally, I had some time to look at the result. So far, I have only made a chart of the average rMMSD over all measurements I took during the trip.

The little cross at 46 years. That’s me. The lines show percentiles across the general population that I found. Higher numbers means fitter. I guess I am scoring pretty well. That’s great.

I took measurements a few times per day during the trip. More detail will follow. For now, a couple of pictures that my colleague took:

By sanderroosendaal • Uncategorized • 0 • Tags: HRV

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