Search found 232 matches

by Nomath
March 1st, 2021, 3:02 pm
Forum: Training
Topic: 10% Higher Rowing Power
Replies: 8
Views: 370

Re: 10% Higher Rowing Power

Not read the paper, but from your description it suggests that accelerating into the catch might be of benefit! Yes, I also think that a quick deceleration before the catch and a steep acceleration thereafter is beneficial, or a high rating. https://i.imgur.com/cv2bna1.png The participants in the s...
by Nomath
March 1st, 2021, 2:36 pm
Forum: Training
Topic: Blood flow restriction training
Replies: 1
Views: 121

Blood flow restriction training

In another topic I mentioned a recent paper Low intensity rowing with blood flow restriction over 5 weeks increases VO2max in elite rowers published in the Journal of Science and Medicine in Sport, Vol 23, March 2020. Unfortunately the paper is behind a pay wall. A quick view of what it is about can...
by Nomath
February 28th, 2021, 7:53 pm
Forum: Training
Topic: 10% Higher Rowing Power
Replies: 8
Views: 370

10% Higher Rowing Power

https://i.imgur.com/Yd2bxe4.png The figure above is taken from a paper published recently in a physiology science journal. I will discuss the paper below. But I like to start with a teasing questions that gets to the core of the paper: The figure shows a rowing cycle. Suppose that for some reason y...
by Nomath
February 27th, 2021, 12:00 pm
Forum: General
Topic: Fan blade Physics and a Peek inside C2's Black Box
Replies: 5
Views: 351

Re: Fan blade Physics and a Peek inside C2's Black Box

The continuous magnetic ring on the model D is a 12 pole magnet. 6 poles in one direction with 6 poles in the opposite direction alternating. The pitch of the poles no doubt lines up with the iron cores in the pickup for optimum effect. The Model C is just 3 tiny magnets embedded in the flywheel. I...
by Nomath
February 26th, 2021, 7:33 pm
Forum: Training
Topic: Physiology of sweating
Replies: 18
Views: 524

Re: Physiology of sweating

I'm probably worrying too much about it, and I didn't have an issue today, but it got me wondering if there is a sweating hierarchy. I'm also probably asking a question that is far too esoteric and niche. Your question is far from esoteric, as it haunts many endurance athletes, especially those exe...
by Nomath
February 26th, 2021, 5:48 pm
Forum: Training
Topic: Physiology of sweating
Replies: 18
Views: 524

Re: Physiology of sweating

Just put yourself on a scale before and after an exercise (and before you go for a pee). My experience : I lose 0.3 kg on a 5K row (20-23 min), independent of my pace. I lose 0.6 kg on a 10K row (41-45 min). If you account for the work done and the mechanical efficiency of a human body, you will fin...
by Nomath
February 26th, 2021, 5:30 pm
Forum: General
Topic: Fan blade Physics and a Peek inside C2's Black Box
Replies: 5
Views: 351

Re: Fan blade Physics and a Peek inside C2's Black Box

Its the same for the Concept 2 monitor really, you need to know the functionality and how to setup the drag factor in particular. You don't want to speculate to much on how Concept 2 made it work, just that it works. Even the earliest PM1 monitor could do the math in 1986, its basically like just a...
by Nomath
February 25th, 2021, 8:01 am
Forum: General
Topic: Fan blade Physics and a Peek inside C2's Black Box
Replies: 5
Views: 351

Fan blade Physics and a Peek inside C2's Black Box

This is not a usual Forum topic, but I cannot think of another place to find readers who might be interested in how the C2 erg works and how the exercise performance is calculated. I hope that there are some readers who have an education in physics or an engineering background because I love to get ...
by Nomath
February 18th, 2021, 4:08 pm
Forum: Concept2 BikeErg
Topic: Watts Bike erg 4K vs Rower 2K, different watts?
Replies: 7
Views: 311

Re: Watts Bike erg 4K vs Rower 2K, different watts?

According to the C2 website, the BikeErg uses the same flywheel and Performance Monitor as the RowErg to measure power (watts). So the watts will be exactly the same. What is different is the associated speed of bicycle or boat. Since the speed of a stationary device is an imaginary attribute, the d...
by Nomath
February 18th, 2021, 3:26 pm
Forum: Indoor Rowers
Topic: No workouts found on USB
Replies: 11
Views: 356

Re: No workouts found on USB

The PM5 doesn't know whether it's in your house, my house, a gym or on the surface of Mars. It certainly doesn't know who left a workout recorded in the NVRAM. Thanks for the clarification. Does this imply that when I insert my USB stick in a PM5 I can move all workouts still present on that PM5 on...
by Nomath
February 18th, 2021, 10:09 am
Forum: Health & Fitness
Topic: HRM and pacemaker
Replies: 6
Views: 303

Re: HRM and pacemaker

I suspect that the HRMs do a good job and 95-97 bpm is your actual limit. Chest strap sensors respond to your heart's electrical activity. It is conceivable that the signal they pick up is interfered by the pacemaker. However, the Polar OH1 is an optical sensor that measures the 'color' of your bloo...
by Nomath
February 18th, 2021, 9:13 am
Forum: Indoor Rowers
Topic: No workouts found on USB
Replies: 11
Views: 356

Re: No workouts found on USB

If you insist on using a USB stick then search your collection of old (working) USB sticks to find one that's seven years old as that's more likely to be USB 1.1 or USB 2.0 and more likely to work with the PM5. I use a USB stick that is less than 2 years old to transfer my workout data from the PM5...
by Nomath
February 14th, 2021, 3:05 pm
Forum: Training
Topic: Polar OH1+ HR
Replies: 7
Views: 272

Re: OH1+

I also found that the OH1 sometimes behaves erratic while rowing, but never does while cycling. My guess is that this is caused by movements of the lower arms. So I always use a chest strap while rowing, which I don't mind, whereas for cycling I clearly prefer the OH1. I suggest that you first test ...
by Nomath
February 14th, 2021, 10:01 am
Forum: Indoor Rowers
Topic: Drag factor (again)
Replies: 18
Views: 721

Re: Drag factor (again)

However, if you want to be highly scientific about how you go about doing this, then set up an experiment where you test multiple pace, distance and DF combinations (essentially a 3-d matrix of conditions) and collect as much data as you like. Personally I think there are too many variables to do t...
by Nomath
February 8th, 2021, 7:05 pm
Forum: Training
Topic: am i about to hit a wall / over training
Replies: 36
Views: 1263

Re: am i about to hit a wall / over training

Regarding dehydration, i only drink water with zero tablets but at the end of a distance so this could be as much as 20k with no drink. So i think i need to change that 😬. I just don’t like the idea of pausing for a drink, just a mental thing i guess. Regarding dehydration: for some time I have reg...