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myimage (7)

Aug 6 2017

Sunday – Wonderful Steady State in the double

We drove home from Pardubice in the morning, arriving home around lunch time. It was raining in Brno. Temperatures have dropped by 15 degrees C overnight.

But Romana and I found a window without rain by carefully studying the online weather radar and we used it to the max. It was quite windy and choppy but that didn’t stop us from doing a lot of technique drills. As a result, we managed to row well in the chop and when we reached the quiet areas of the lake, we were flying (at steady state pace).

We got enthusiastic and did a race start, and two race pace intervals of 15 strokes each.

Technique drill between 2k and 3k resulting in no stroke rate recorded

A nice row. When we were cleaning the boat, it started to rain again.

The two rows in the double of this weekend were both great, and they confirmed one thing. As a result of rowing with the Empower Oarlock and the constant direct feedback, combined with the analysis done at rowsandall.com, I have gradually made small incremental changes on my technique, trying to make the boat go faster. Both Romana and Tomas confirmed that I have made a fundamental change in my stroke, and they had to get used to it. But both confirmed that when they managed to fall into the same groove as I, we were going relatively fast.

Rowing in the double without the Empower Oarlock, I set up the SpeedCoach to show meters per stroke. I find that this metric really shows effectiveness of rowing, with two pitfalls:

  1. Do not compare meters/stroke at different stroke rates
  2. Do not compare over longer distances

It is a useful metric to monitor stroke to stroke differences at constant stroke rate. In the headwind intervals, we were rowing well when we reached just over 10 meters/stroke at 21 spm. In the tailwind intervals this was about a meter further.

By sanderroosendaal • Uncategorized • 1 • Tags: 2x, double, OTW, rowing, steady state, training

myimage (6)

Aug 6 2017

Saturday: Sprintervals in the double – minus one GoPro camera

Friday

Another heat wave day. I decided to cross train, cycle to work (15km) and, after only half a day of work, cycle home (15km), which was a good endurance workout in the heat. I took the afternoon off and did some work around the house, helped by my son Dominik.

I didn’t know the route through the city center is shorter:

Saturday

We drove to Pardubice, where we celebrated my youngest son’s eleventh birthday at my mother-in-law’s place. Big lunch. Then coffee with birthday cake. Then unwrapping of gifts, followed by a refreshing hour of splashing in the pool.

At 5pm, my brother-in-law Tomas and I, as well as my daughter Lenka and her boyfriend took off to the University rowing center in Pardubice (where Tomas is coaching). Tomas and I took a double, and Lenka and Vasek would row a quad with two Pardubice student girls.

I fitted the double out with my GoPro camera, because I wanted to film this workout.

Then we were busy getting the girls (+ one boy) out on the water, and in the hassle I forgot to put on my heart rate belt. I only noticed that after the row.

I also forgot to record the cooling down on the SpeedCoach (because I was pretty exhausted by the time we started the cooling down). So for the entire row, I only have the Garmin Forerunner recording:

The workout was great. The only minus was that we got terribly waked three times by a waterskier. Normally water skiing happens on a lake not far from Pardubice, but this guy decided it was a good idea to do water skiing.

I also noted that Stand-Up Paddle boarding has reached Pardubice. There was a SUP rental station 500m upstream from the rowing club, so there we would row through about 15 paddle boarding beginners. Exciting!

One of the wakes must have washed my GoPro off our front deck. We ended the row without camera. It’s a pity I don’t have the footage, because it was a good workout and we wanted to look at some technical flaws. I am not too depressed about losing the camera. I was a very early adopter of the GoPro, so I am due for an upgrade! 😉

The workout was 2x(8×45″/1:15″)/5min. The 8 intervals were chosen to fit nicely into the 4km stretch of river that we rowed on. It was an interesting experience. There were intervals where Tomas was perfectly in sync with my rhythm, and there we hit 35spm easily with good pace. But about half of the intervals were “miss”. We were slightly out of sync, which means that the boat suddenly feels heavy, you have difficulty getting the stroke rate up, and about 20 seconds into the interval you feel the lactate rush to your legs.


Work Details
#-|SDist|-Split-|-SPace-|-SPM-|-Pwr-|AvgHR|MaxHR|DPS-
01|00206| 00:45 |01:49.2| 32.0| 000 | 000 | 000 | 8.6
02|00222| 00:45 |01:41.3| 33.3| 000 | 000 | 000 | 8.9
03|00217| 00:45 |01:43.6| 33.3| 000 | 000 | 000 | 8.7
04|00226| 00:45 |01:39.5| 36.0| 000 | 000 | 000 | 8.4
05|00210| 00:45 |01:47.1| 33.3| 000 | 000 | 000 | 8.4
06|00218| 00:45 |01:43.2| 33.3| 000 | 000 | 000 | 8.7
07|00215| 00:45 |01:44.6| 33.3| 000 | 000 | 000 | 8.6
08|00219| 00:45 |01:42.7| 34.7| 000 | 000 | 000 | 8.4
09|00205| 00:45 |01:49.7| 32.0| 000 | 000 | 000 | 8.5
10|00198| 00:45 |01:53.6| 32.0| 000 | 000 | 000 | 8.2
11|00204| 00:45 |01:50.2| 33.3| 000 | 000 | 000 | 8.2
12|00201| 00:45 |01:51.9| 34.7| 000 | 000 | 000 | 7.7
13|00183| 00:45 |02:2.9| 30.7| 000 | 000 | 000 | 8.0
14|00189| 00:45 |01:59.0| 32.0| 000 | 000 | 000 | 7.9
15|00220| 00:45 |01:42.2| 36.0| 000 | 000 | 000 | 8.1
16|00227| 00:45 |01:39.1| 36.0| 000 | 000 | 000 | 8.4
Workout Summary
--|03360| 12:00 | 1:47.1| 33.5| 000 | 000 | 000 | 8.4

Power courtesy of Strava (not accurate)

By sanderroosendaal • Uncategorized • 4 • Tags: ANC, ANC training, double, river, rowing, sprintervals, training

IMG_0282

Aug 4 2017

Thursday: steady state

My entire flotilla was on the water. Romana and her doubles partner Veronika were out in our double “Orca” and I took my single “Dolfijn”.

Just 14 km of steady state, rowing back and forth alongside (in front of) the double. Veronika, who is from Ostrava and used to a quiet river, was very stressed by the traffic on the lake. In her own words: “If something floats in our river, it’s dead.”

I guess I have developed quite some nonchalance managing the lake traffic. I take calculated risks and go close. The risk is having to do a dead stop, but most of the time everything is fine. Perhaps my Dutch cycling skills come into play here:

This is how we cycle, where I grew up. I don’t see anything abnormal, but I understand from the circles, that there is something interesting going on.

Back to rowing, I was also rowing low Work per Stroke on purpose, and I was not slow.

A quick look at some metrics:

 

And here is the interesting chart. I am looking at data for the steady state workouts of Tuesday and Wednesday.

And here is the really interesting chart. I took pace vs power (my go-to efficiency chart currently) and looked at average data grouped by work per stroke. The data are from this week’s steady state workouts. On Tuesday I was rowing in the 550-600J range. On Thursday, I was in the 475-550J range:

You see how the boat speed stagnates between 180 and 200W of power? I was just more efficient on Thursday. Getting the same average boat speed at lower power.

The water temperature was the same. The weather was the same:

Thursday: Summary for your location at 2017-08-03T18:22:24Z: Mostly Cloudy. Temperature 78.81F/26.0C. Wind: 0.24 m/s. Wind Bearing: 4 degrees

Tuesday: Summary for your location at 2017-08-01T07:23:25Z: Clear. Temperature 82.53F/28.0C. Wind: 0.79 m/s. Wind Bearing: 147 degrees

According to the weather report there was a slightly stronger wind on Tuesday. According to my own observations, the wind was stronger on Thursday. But light wind in both cases. The wind direction was different, but that should average out over the outing.

I don’t take it as hard evidence but I do take it as an encouragement to keep experimenting with lightening up the stroke.

Edited with BlogPad Pro

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

myimage5-1.png

Aug 1 2017

Rate Ladders

I managed to get to the lake before work, but not early enough to do more than a 12k workout. I actually think that is a good thing, because I was still feeling tired from Monday’s Pete Plan Pyramid (OTW version). The plan called for steady state (16k) but I decided to use the shorter format to spice it up slightly. I went for rate ladders. Our lake is a little under 3km long from “Rokle” to “Sirka”. (You can actually do a full length 3k if you row from “behind Rokle”, but then you have a turn at the beginning.) So I decided to do 1k/750m/500m/250m/rest of lake at 18spm/20spm/22spm/24spm/16spm. So I would gradually rate up, trying to hold just under 600 J on the Work per Stroke metric (Empower Oarlock), until a 250m at 24spm, and then I would fall down to 16spm, while still holding 600J, until I ran out of lake. A turn, sip of water, repeat.

myimage (5)


Workout Summary - media/20170801-093716-Sanders SpeedCoach 20170801 0653amo.csv
--|Total|-Total-|--Avg--|-Avg-|Avg-|-Avg-|-Max-|-Avg
--|Dist-|-Time--|-Pace--|-Pwr-|SPM-|-HR--|-HR--|-DPS
--|11751|61:24.0|02:36.8|170.9|20.2|147.5|175.0|09.5
W-|10252|50:02.0|02:26.4|177.0|20.0|147.1|175.0|10.3
R-|01500|11:22.0|03:47.5|120.8|20.4|144.1|175.0|00.0
Workout Details
#-|SDist|-Split-|-SPace-|-Pwr-|SPM-|AvgHR|MaxHR|DPS-
00|02000|11:16.1|02:49.0|141.4|20.4|121.0|139.0|08.7
01|01000|04:40.3|02:20.1|181.4|18.5|139.4|149.0|11.6
02|00750|03:22.5|02:15.0|198.1|20.3|152.3|158.0|10.9
03|00500|02:09.9|02:09.9|218.4|22.2|161.6|165.0|10.4
04|00250|01:03.2|02:06.3|239.7|23.8|166.7|167.0|10.0
05|01000|04:58.4|02:29.2|172.6|17.9|150.4|155.0|11.2
06|00750|03:35.6|02:23.7|196.7|20.3|160.9|166.0|10.3
07|00500|02:17.7|02:17.7|216.7|22.3|168.7|171.0|09.8
08|00250|01:05.1|02:10.2|242.2|24.5|172.4|173.0|09.4
09|01000|04:42.3|02:21.2|176.3|18.3|154.4|162.0|11.6
10|00750|03:26.0|02:17.4|191.2|20.1|163.4|166.0|10.9
11|00500|02:11.5|02:11.5|219.0|22.2|169.6|173.0|10.3
12|00250|01:03.9|02:07.8|236.8|24.3|173.6|175.0|09.6
13|00752|04:09.8|02:46.1|115.1|17.9|134.6|138.0|10.1

As the water was mirror flat, and the temperature just after sunrise a nice 22 degrees C, it just required a bit of concentration to hit those numbers:

bokeh plot (22)

 

Just for fun, here is the distribution of strokes in terms of power and pace:

bokeh plot (23)

 

There was a slight wind when I started (tailwind in the first set, headwind in the second) but the wind strength was decreasing as the session progressed. I think that explains the spread of pace values.

The Trend Flex chart averages all that out:

bokeh plot (25)

 

Monitoring the Work per Stroke over the past three months, here is the Box Chart of Work per Stroke for all strokes in the 15 to 25 spm range with more than 400 J (to eliminate paddle strokes):

bokeh plot (26)

 

Perhaps “just under 600 J” is a bit too much and my natural stroke should be in the 500-550J range? Looking at the trend for race pace strokes (chart below), I have been rowing them at a higher Work per Stroke. Wrongly, perhaps?

bokeh plot (27)

 

Anyway, glad that I have the data allowing me to ask those questions.

By sanderroosendaal • Uncategorized • 1 • Tags: analysis, OTW, power analysis, rate ladders, rowing, steady state, training

IMG_1561

Jul 31 2017

Simmering Cheops Soup

The planned session was the Pete Plan Pyramid: 250m/500m/750m/1000m/750m/500m/250m intervals. Rest: Paddle the distance that you have just rowed.

It didn’t matter that it was 35 degrees C in the shadow.

It didn’t matter that this was my first working day after the vacation. I tell you, spending the entire day in an airconditioned office, and then going out into the heat, it’s worse than just spending the day outdoors.

The Brno reservoir, on days like these, turns into a giant outdoor swimming pool, especially after work. Unfortunately, I couldn’t go out in the morning.

Swimmers. Sailing boats. Pedalos. Electric Boats. Stand-up Paddlers. Kayaks. More swimmers. Big tourist boats. Dragon Boats. Thankfully, no water skiers.

Half of the adults are not sober. Some have jumped off their vessel and are trying to climb back into it (which takes a long time after a few drinks). One third of the captains are checking their phones, or have their headphones on. Some are doing Yoga on paddle boards in the middle of our traffic pattern. Our lake is basically, a hot, simmering soup. Steaming. Hot. Liquid. Pieces of meat floating around.

I have made a short video to illustrate the sounds I hear during rowing. Please play it so you can imagine the atmosphere. The photos are taken after the row. During the row, the sun was higher, and stronger. You have to imagine the smell of grilled sausage yourself as I didn’t find a way to transmit that through this blog.

Yesterday, I read this discussion on Reddit. The question was: “What’s wrong with Kayakers?” Some of the answers are funny:

A cox’n: “I s2g I’ve yelled more at kayaks and SUPs than I have at bow 4 combined.”

“They’re basically the one bad thing about my home water. Austin is hipster central, and doing yoga with your dog on a standup paddleboard might be great for instagram, but it sucks for us having to check it down 70% of the way through a race piece.”

“Treat them as you might a toddler.”

“Because most of them are rank amateurs that haven’t even been properly trained on water etiquette before being released into the world. People will literally rent them the boats and be like do whatever idgaf not my responsibility.
In general “amateur athletes” in sports like kayaking or downhill skiing are a danger to themselves and others. They don’t properly understand the risks, think it looks easy and forgo getting trained or get trained by the cheapest, shittiest trainer, and often don’t even realize that there is an actual chance you can die doing this activity. People don’t realize how dangerous sports can be.”

“If rowing takes place on the same waterway as any other human-powered watercraft (or even slower motorcraft), and the non-rowing boat is in front of the rowers, you end up with a slow boat in front of a fast boat with neither crew having eyes on the other. Add to that that human powered craft are pretty quiet and that the rowing shell can’t turn nimbly; it’s exceptionally easy for a collision to happen.”

OK, enough. I usually try to be very nice, hoping that they will not develop a disliking of rowers and might consider the sport for their kids. But I also go slightly into the “treat them as you might a toddler” direction.

Anyway, you can imagine that turning around to check regularly if one of the five slow boats in front of me hasn’t decided to change course without checking if something fast is coming up from behind is not speeding me up.

Rowing away from the dock, I noticed that the SpeedCoach battery indication was at 0%. That wasn’t helpful. On Saturday, it was still on 60%, and I had forgotten to charge it, thinking that being switched off it wouldn’t discharge so fast. To make things worse, I had forgotten my backup Garmin Forerunner in the locker room and because of the heat I was not willing to return the 300m to the dock, run up the hill to the club house, get the Garmin, and start the training again. So I decided to risk it. If the SpeedCoach would die, I would use counting strokes to roughly measure out the distances and still complete the training.myimage (4)

I guess it was hot. Perhaps I already told you above, but it was hot. I decided that going out at 350W for the 250m would be a good idea, then reduce to 325W for the 500m, row the 750s and the 1k at 300W, and then back up again.


Workout Summary - media/20170731-195019-Sanders SpeedCoach 20170731 0610pmo.csv
--|Total|-Total-|--Avg--|-Avg-|Avg-|-Avg-|-Max-|-Avg
--|Dist-|-Time--|-Pace--|-Pwr-|SPM-|-HR--|-HR--|-DPS
--|11479|61:52.0|02:41.7|176.3|24.0|157.3|186.0|07.7
W-|06979|33:19.0|02:23.3|207.9|25.6|158.0|186.0|08.3
R-|04500|28:33.0|03:10.4|097.3|19.4|149.4|186.0|00.0
Workout Details
#-|SDist|-Split-|-SPace-|-Pwr-|SPM-|AvgHR|MaxHR|DPS-
00|02000|10:55.2|02:43.8|150.8|20.6|135.0|151.0|08.9
01|00250|00:57.5|01:55.1|358.1|32.1|170.1|177.0|08.1
02|00500|02:10.3|02:10.3|306.3|31.1|177.3|184.0|07.4
03|00750|03:06.2|02:04.1|290.5|31.3|180.7|186.0|07.7
04|01000|04:07.5|02:03.7|265.4|29.9|180.1|185.0|08.1
05|00750|03:08.6|02:05.7|264.2|30.4|179.8|186.0|07.9
06|00500|02:00.1|02:00.1|273.2|31.7|174.4|183.0|07.9
07|00250|00:58.7|01:57.4|316.4|34.3|170.9|180.0|07.5
08|00979|05:55.7|03:01.6|099.6|19.9|144.7|154.0|08.3

Doing the first two intervals basically fried me. I had to almost come to a full stop during the 500m to avoid a collision with a pedalo that suddenly changed course. During the 750, the 1k, the second 750, I just went with whatever I could produce at roughly 30spm. Mind you, I did monitor form and boat run. It wasn’t an all sloppy affair. It was just that the engine was very inefficient due to my overheated body. After each interval I collapsed, put my hands in the lake to cool down, wetted my hat with lake water, drank some water, and tried to do the rest paddle as slowly as possible to get back some energy to do the next interval. All that surrounded by the sounds of screaming children and rowing through the thick smell of grilled sausages and other barbecue going on at the lake shore.

In the final 500m I tried to hold 300W and failed. In the final 250m I did manage to hold something between 330W and 350W with decent form.

Decent values for finish angle and wash show that I did keep form relatively well
Drive length and effective drive length show that my form didn’t disappear
I tried to row at 600J per stroke but I collapsed to something in the 500-550J range
Crashing on power and average drive force in the third interval

 

Not happy with the result, but not unhappy either. The circumstances were bloody hellish, and I didn’t handle down. Tomorrow, I will be able to go out first thing early morning. That should be better. Tomorrow is expected to become the hottest day of this summer, with maximum temperatures between 34 and 38 degrees (in the shadow) for Brno.

Did I mention it was hot?

By sanderroosendaal • Uncategorized • 1 • Tags: cheops, hot, lake, OTW, pete plan, rowing, single, training

Confidence.jpg

Jul 30 2017

Saturday: steady State on the lake

It was a hot day yesterday. I took the boys to the rowing club where they had fun swimming in the lake, while I did 12k in the single. Then i took out kids’ singles for them and we had fun doing tricks like standing up, changing sculls etc. we got wet and prscticed climbing bsck into the single. Something like this:

Confidence drill: standing up

 

I switched the SpeedCoach settings to show stroke length and work per stroke. I was curious to see these metrics during the row. Absolute stroke length was a bit borijg to watch as it didn’t vary much. The work per stroke steadily decreased as I got tired.

Stroke length varied little but effective stroke length dropped

 

 

Edited with BlogPad Pro

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

Invert.jpg

Jul 29 2017

Double with Romana – inverted pyramid on Friday

Friday morning. It was a beautifully gray summer morning. The kind of morning that rowers love. The lake was mirror flat and the sun was coming up and starting to break through the clouds. There was a light wind from the south impacting the splits slightly, but nothing to complain about. 

Romana and I had a great row in the double. I was to do a sprinterval session this week, and I decided to spice up the rowing in the double by testing our race pace. I chose the 30″/30″ + 45″/45″ + 60″/60″ + 45″/45″ + 30″/30″ sets, which are to be rowed in race spm + 4, 2, 0, 2, and 4, so that would be 38/36/34/36/38.

We hadn’t done any race pace strokes together since May. Therefore, I started the first interval careful and lowered the spm by 4. As you can see from the summary, in the last interval I was confident and rowed it in 36 spm.


Work Details
#-|SDist|-Split-|-SPace-|-SPM-|AvgHR|MaxHR|DPS-
01|00136| 00:30 |01:50.2| 34.0| 140 | 158 | 8.0
02|00195| 00:45 |01:55.3| 32.0| 165 | 170 | 8.1
03|00259| 01:00 |01:55.8| 30.0| 166 | 173 | 8.6
04|00200| 00:45 |01:52.5| 32.0| 162 | 171 | 8.3
05|00137| 00:30 |01:49.4| 36.0| 164 | 175 | 7.6
Workout Summary
--|00927| 03:30 | 1:53.2| 32.3| 161 | 175 | 8.2

In the second interval, I started at 36 and worked down the inverse pyramid, or is it a double waterfall?

 

Work Details
#-|SDist|-Split-|-SPace-|-SPM-|AvgHR|MaxHR|DPS-
01|00135| 00:30 |01:51.1| 36.0| 139 | 161 | 7.5
02|00200| 00:45 |01:52.5| 33.3| 169 | 175 | 8.0
03|00267| 01:00 |01:52.3| 32.0| 171 | 177 | 8.3
04|00201| 00:45 |01:51.9| 33.3| 166 | 177 | 8.0
05|00140| 00:30 |01:47.1| 36.0| 170 | 177 | 7.8
Workout Summary
–|00943| 03:30 | 1:51.3| 33.7| 164 | 177 | 8.0

In the third interval I wanted to stick to 36/34/32/34/36 but I didn’t succeed. We were working on getting the catch timing right without stopping the boat, and that, as well as the knowledge that this was the final set, made me forget to check the speedcoach and just row on feel. 

 


Work Details
#-|SDist|-Split-|-SPace-|-SPM-|AvgHR|MaxHR|DPS-
01|00141| 00:30 |01:46.3| 36.0| 149 | 166 | 7.8
02|00198| 00:45 |01:53.6| 34.7| 172 | 179 | 7.6
03|00263| 01:00 |01:54.0| 34.0| 174 | 180 | 7.7
04|00201| 00:45 |01:51.9| 33.3| 169 | 177 | 8.0
05|00142| 00:30 |01:45.6| 38.0| 170 | 178 | 7.5
Workout Summary
--|00945| 03:30 | 1:51.1| 34.9| 168 | 180 | 7.7

Did I mention it was a great row?

Edited with BlogPad Pro

By sanderroosendaal • Uncategorized • 2

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