#indoorrowing

[@bb3xhrhj]

Very nice analysis. Thanks for letting yourself get roasted Florian :)

[@bonyserg2003]

très belle démonstration pour aider à éviter des traumatisme et à améliorer le rendement du coup d'aviron. rappeler les sensations sur les talons est aussi intéressant.

[@markborchelt2098]

Excellent ! Example of how to use the erg to row faster on the water. Efficient body mechanics and why. Well done.

[@TijnCox]

Aram, I have a question regarding the back positions of Florian and Alex. I have the feeling that Alex has a very rounded lower back, while Florian has a straighter lower back. I've always been taught that a rounded lower back is a bad thing to have because it overloads the lower back which leads to injury. Do you have a video about this issue and if not is one in the works or would you be able to quickly give your thoughts on this here in the comments?

[@wkfsbtbw]

Since no one has replied: I found this video from Training Tall guy who explains this in detail - (search for) Row Form: Olympic Rowers "Round Their Back" (NOT GOOD?!)

[@AramTraining]

Round low back does create an overload of the spine. It is not so much a back issue but a lack of pelvic strength and mobility.

[@Simon-xi8tb]

@@AramTraining so we need to do more kegel exercises ? 😹

[@SanjeevSharma-vk1yo]

Is there an advantage to having the long-leg'd and short-torso'd structure, and is it the case that those of us with the opposite dimensions simply have some disadvantage in mechanical leverage? If one's structure includes short legs (calves and thighs, femur and tibia) and long torso, is the late hip hinge that you recommend a good way to take advantage of this structure?

[@paulaspanish7500]

Thank you Aram! You always make it so clear and interesting !🙌I can see that Alex does it the right way and perhaps the linear ergo makes it more difficult to a achieve this ? When is the right time for the back movement to aid in generating😅 speed ?

[@AramTraining]

The moment you are about to run out of motion. The upper body swing should initially be supported by a significant leg drive

[@paulaspanish7500]

@@AramTraining thank you 😊 Aram

[@jean-lucelghozi1973]

Dear Aram, I really love your videos and I learn a lot with your technical explanations. I have a question regarding the force curve obtained with an indoor rower as shown in this video. You tend to assimilate the force curve to the acceleration of the wheel Then you recommend, if I can say so, a rectangular curve rather than a triangular one (with a premature peak). You say the acceleration is constant during the plateau. However the flywheel is becoming looser while you are pulling the handle (the opposite with a rubber band easy to stretch at the beginning and increasingly resistant while you pull more). I think therefore that with a stable force the wheel will decelerate. I reckon the only way to maintain acceleration would be to increase force all along the propulsion. Torso and arms (with lats also) on the top of legs might do the job. Am I right ? I remember that Valery Kleshnev explained in Rowing Biomechanics Newsletter N°12 that triangular curves (on water) were commonly observed in champions, suggesting this type of curve was preferable to the bell-shaped curves. I imagine a delayed peak is better to prolong acceleration while with a bell curve (plateau) you may waste energy since you decelerate during the plateau. Not a simple question I confess. Thank you in advance for considering it. Jean-Luc from Paris

[@ridlz5305]

From a physics perspective, force is directly proportional to acceleration. So the fact that a constant force is recorded, means that the wheel was recorded to be accelerating. Perhaps you are confusing force with speed (it is known that humans are bad at recognising acceleration visually so probably the same when you are rowing). When you pull the handle back at a constant speed you would be right that the wheel would decelerate as you extended. The main point is that force and acceleration are interchangeable, the acceleration curve would look the same but with different units - in fact it's likely that the force curve is calculated from the acceleration of the flywheel which is cheaper to measure. As for professionals having weird force curves, I've heard people say it's likely that the top pros have so much stamina that they can sacrifice efficiency for greater speeds on water.

[@jean-lucelghozi1973]

@@ridlz5305 Let me sincerely thank you for opening my mind. I was confused with the force curves and I now understand why some athletes maintain force during pulling to maintain acceleration. It is indeed easier to pull with a strong leg effort and maintain a back speed but as you explained to me the flywheel will decelerate and the calculated speed of the rower (flywheel) will diminish. I was confusing force with speed! I will now think of acceleration with the force curves. I hope to be correct. Cheers. Jean-Luc

[@AramTraining]

Thank you very much for your feedback. I should clarify how the Biorower works. Exactly like in the boat, both oars are equipped with strain gauges and independent angle sensors. The Biorower actually measures force. Would you want me to make a video about this?

[@jean-lucelghozi1973]

@@AramTraining Thank you very much Aram for your answer. I would like to see how the Biorow works. Even more if you authorize me to speak as an indoor rower I would love to see the expected 'perfect' curves for the force put on the handle , the acceleration of the flywheel (interchangeable with the force curve, supposedly horizontal after the initial leg pull), the speed of the handle (supposedly increasing during the drive) and moreover the flywheel rotation in rpm. It is very difficult to me to figure out the non parallelism between speed of the handle and flywheel rotation which should represent the speed of a virtual boat. I expect an increasing flywheel rotation all along the drive. Ridl Z pointed out wisely my confusion.

[@SanjeevSharma-vk1yo]

I'm curious, when drawing your force vectors, why you don't speak in terms of torques around the joints. Torques could be more accurate, but perhaps not as pragmatically useful. Are the linear vectors that you draw better in your coaching experience for communicating your ideas in a way that rowers can understand, feel and incorporate into their training? I could understand that pedagogically and for coaching cues, torques could mislead - the linear vectors are perhaps easier to feel and easier to teach.