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Safe and effective sprinting in indoor cycling

18/6/2018

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by Angela Reed-Fox

Safe and effective sprinting in indoor cycling

The one indoor cycling manoeuvre which causes the most injuries (and litigation) appears to be 'sprinting'. But effective sprinting is safe - what we've found it that sprinting is frequently coached wrongly or badly, putting riders at risk of injury.

What sprinting is not

Sprinting is not having riders pedalling as fast as they can. We've seen examples of instructors asking riders to match an unsafe foot speed (regardless of the ability, fitness, and coordination of the rider), getting riders to compete against each other to see who can go the furthest (using the bike's distance metric) or having riders competing to pedal the fastest.

The above practices (and others) promote riders pedalling with insufficient resistance; with the fixed flywheel construction of the stationary bike, this means they are more likely to lose control of the bike, putting them at risk of horrible injury.

What sprinting is

Click on the video to the left, and watch Peter Sagan sprint to the finish in the Tour de France. You'll notice this is not much like a lot of the 'sprinting' that might go on in the studio if the instructor has not been instructing it correctly. 

What's the difference?
The difference is resistance. And as Peter sprints, this is how we need to instruct our riders.
What happens as Sagan decides to attack?

1. He adds on gears
This is similar to us adding on resistance - but on a road bike, when you add gears, it means every push of the pedal will get your nearer to the finish line. Instantly he's making it harder to pedal.

2. He positions himself
Moving his seat closer to the nose of the saddle, he's shifting his weight forward on the bike. This means he can power down on the pedals more efficiently because he's shifting further ahead of the crankarms which means he can recruit more power from those big muscle groups.

3. He picks up the pace
Then he's ready to fire. Added to the steps he's already taken, when he increases the cadence and fires forward.

What does that mean for you instructing a sprint?

First of all, it means there's a definite order. Although Greipel employed these steps in a second, he'd be adding cadence onto resistance, not the other way round. For him, that would mean he's wasting energy with a faster cadence at a lower resistance, but in the studio where we have a fixed wheel setup and no actual finish line, it's more about safety. We keep our riders safe by always ensuring that they have sufficient resistance for their ability, their level of fitness, and the cadence they're pedalling.

Coaching different positions on the bike is great not just for seasoned veterans, but also for new riders who will welcome their bodyweight being shifted to a different part of their undercarriage! We'll be recruiting muscles differently when we shift to a different position.

In the clip, Sagan looks like he's pedalling at about 100-110rpm (approx). That's a vast difference from some of the unsafe craziness that occurs in studios. Why doesn't he pedal faster? Because he's pedalling against an immense resistance and he knows his most efficient cadence when sprinting. As a general rule of thumb in the studio, if your rider can manage 120rpm, that rider needs to add resistance.

What would happen if Peter Sagan did a dangerous 'studio sprint' in this situation? Well what would happen would be he'd pick up the pace and reduce the resistance (we've seen that happen) so essentially his power output would drop, as his cadence increased. He would be overtaken. His legs would be flapping wildly as he pedals in his 'granny' gear while his opponents would quickly flock past him snatching glory from him well before the finish line. He'd probably lose his place on the team for the next season, and therefore miss out on lots of lucrative sponsorship deals too. See, it's just not worth it!

How should you coach the sprint?

Remember that we are aiming at both a safe and an effective sprint, otherwise there's no benefit to the rider - and there's risk of injury when done incorrectly.
  1. Demonstrate the forwards position of the sprint (no overstretching on the handlebars though)
  2. Coach the sprint - advise your riders what the resistance should feel like, and when they should add cadence onto it - and how much. Don't permit cadences in excess of 110rpm. If you're able to coach power,  you can always use power zones to make sure riders are in the right place.
  3. Advise riders of how long the sprint will be to enable them to pace themselves. There is no such thing as a minute sprint. Think of energy systems - you'll only have a few seconds of maximum power. Look at the clip again and see how short the sprint is. What if the finish line had been 20 yards farther? Greipel would have started his sprint a little later, of course!
  4. Count in the sprint, and then count it out.

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  • Home
    • Pre-Instructor
    • Instructor CPD
    • For Managers
  • Courses
    • ONLINE indoor cycling instructor training course
    • ICI Indoor Cycling Instructor training course (1 day)
    • ICI indoor cycling instructor training course (2 day)
    • Upgrade your certificate to ICI standard
    • CPD courses
  • Course dates
    • UK indoor cycling instructor training >
      • Bridgend
      • Bristol
      • Cambridge
      • Devon (Newton Abbot)
      • Liverpool
      • St Albans
      • West Midlands (Aldridge)
    • Canada Indoor cycling instructor training
    • US Indoor cycling instructor training
    • Australia Indoor cycling instructor training
    • New Zealand Indoor cycling instructor training
    • Europe Indoor cycling instructor training
    • Denmark Indoor cycling instructor training
    • Norway Indoor cycling instructor training
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