Instructions for coaches


Coaches Menu


Thank you very much for helping to generate this database of videos and comments.
Your entries will be treated anonomously.

The database will provide as large as set as possible of videos synchronised with kinetic data of rowing strokes performed using an indoor rowing machine.
It will also provide comments from expert coaches on the technique used during each stroke

The rowers that have logged the data are of all standards and experience, coming from the Cambridgeshire area

Sometimes you will be asked to comment of different strokes from the same performer and even same sessions, so please do this even if your comments are the same as you have previously given.

The database will provide a very useful resource for both the rowing and research communities.

When using this website, there are 3 tasks that involve you commenting of performances recorded using the system.
Each task has a playlist of performances or a playlist of "sets of performances".
You will be taken to the next available entry in your playlist when you click one of the buttons on the previous menu screen or
when you submit a judgement for the current entry. This forces you to make a call based on your personal intuition, skill and experience.
If you have made judgements on all the entries in the playlist for a particular task, you will have to wait for more data to become available.
  1. Comparing the similarity of performances

    It would be useful to tell an athlete how close their technique is to an "ideal" technique, to help them realise problems that come with fatigue,
    let them know they have improved by 10% over the last week or that their consistency has got worse by 5% but started to get worse later than the last workout.
    Judgements like these can be made by comparing performances but such comparisons are very subjective.
    The first task asks you to watch videos of superimposed performances and comment on how similar the techniques in pairs of performances are in your opinion..
    The strokes may or may not be from the same person, and may or may not even be identical. If you believe the similarity is too close to call, it does not matter which answer you give.
    The task is split into 2 sub-tasks:

    1 - Comparing an aspect of the technique related to upper body posture using the trajectory of the handle that the system records. The videos show trajectories of
    the handle of the rowing machine, viewed from the side. The dot is the current position of the handle.
    The data is from sensors that are subject to noise, so do not be surprised by the occasional spike or unexpected absence of data.
    You are also asked to say which stroke or trajectory you think looks the best, i.e. would come from a performance with the best technique.

    2 - Compare the overall similarity of the technique in the performances by looking at 2 pairs of videos made from overlaying a different performance onto two copies of a third performance. The performances are again viewed from the side.


  2. Labelling performances

    Rather than just telling the athlete how similar they are to an "ideal" technique, it is helpful to break down their performance and start to provide information on why they are not rowing with an "ideal" technique and what they should do about it.
    Coaches can provide realtime verbal feedback to atheltes such as "do not rush the slide" or "relax your shoulders".
    One aim of the system is to try and replicate this type of feedback, so if the coach is ever unavailable, the rower can still get some hints on what might be the problem.
    The way the system achieves this is by first being taught about rowing technique as you would teach a human trainee coach.
    We teach it about a number of aspects of rowing technique selected by examining your comments in task 3 and material from CUBC and GB Rowing.

    The second task asks you to teach the system by watching a performance and filling in a multiple choice menu to say HOW MUCH ATTENTION should be given to each aspect for the stroke shown.
    For each aspect or thing that can/should happen when you row, you are asked to say how much the athlete needs to address it, by doing whatever is necessary (you can assume he knows this or will be told and the feedback will be a reminder).

    Sometimes there will be video, sometimes there will not - just sensor signals, to see what is possible you can say using just sensor signals.


  3. Commenting in natural english

    The last task asks you to simply note down how you think the rower should improve their technique. I.e. write in natural english what you would say to them if you were standing next to them.
    This is to capture natural expressions, words, names of common faults, ways of moving, exercises, parts of the performance, etc, that are used to inspire the list provided in the Labelling in task 2.



By clicking on the respective buttons on the previous screen, you are taken to the next performance to watch in your playlist for the appropriate task.
Once you press the "submit" button for that video, you will be automatically taken to the next performance in the playlist, until the playlist is empty.
You can see how many you have done and how many there are to do under the buttons on the previous screen.
This number "left to do" will increase over time as people use the system and more videos are added to the playlists.


Please ensure you have changed your password from that provided to something you can easily remember.



Questionnaire on forms of feedback in rowing

This questionnaire is to collect opinions of rowers and their coaches on how best to provide them with feedback on an athlete's technique that can help them improve their performance and avoid injury, by using pervasive, high fidelity sensor systems and smart technology.

The questionnaire should take you approximately 10 minutes. All answers are anonomous. Once you have completed all the questions you can check through your answers using the 'previous question' or 'next question' links at the bottom of the page. When you are happy you may close the browser/tab or return to the main menu. You may return to the page at any time.

Thank you very much for your contribution.