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Yes - the curved non-motorized treadmills tend to be much better for sprint workouts and general interval workouts, as you can simply change the speed of the runs on your own, without having to press any buttons or find the best speed for you.

Yes - and I'm working with various Div 1 Football programs on how they can diversify the implementation of the protocol at different times of the year and with different position groups. Sometimes, the emphasis will be more slanted to conditioning protocols, while other times it will be targeting repeat sprint ability.

I believe the longer the sprint (200 or 400m) the more benefit you will get from the shoes creating a rebound effect, as opposed to your fatiguing muscles providing all of the elasticity. I'll be curious to see how it feels in your longer sprint races and training sessions.

Thank you kindly! The older athletes that I train also like these new spikes because they are more comfortable on ground impact. The proprietary foam makes the ground contacts more bouncy and less jarring than conventional spring spikes.

Thank you Diego. I have to put together a follow-up video soon.

If you haven't done much in the way of sprinting, I would start with 2-3 sets at a very easy acceleration pace (sub-maximal for sure). Put in some workouts, increase volume over several weeks and then gradually increase speed. You may find yourself settling in at 3-5 sets a few times a week, but it's a great workout for general strength, speed and cardiovascular fitness. I commonly get my hear rate up in the 150-170 bpm zone at my age (54 years old).

My sense of it is that the air bubble combines with the carbon fibre plate to create a spring-board-like effect that bounces the athlete off the ground. The problems seem to arise from the durability of the air bladder system, as I've heard that there have been a significant number of cases where the air bladder has ruptured. I will say that the air bladder system does make impacts feel more comfortable (less sharp impact on ground contact). The question would be, can this system be tuned so that it provides a stiffer ground contact for shorter sprint distances.

@@DerekMHansen thanks for the response 🤝 I've also come across a lot of worries about durability. Do you see many professional athletes using the spikes?

@@seamusmccartney5872 I have a number of athletes using them. So far so good. They all like the fact that the spikes are pretty comfortable and soften the impact. We'll see how they last.

It really depends on the type of start you are trying to measure. For a conventional three-point start for a 40 yard dash, we were using the in-beam setup, where the athlete was within the beam and the timer started when they left the start position. But, we have also done some testing with the break-beam setup, where the athlete breaks the beam with their body. The only issue with the break-beam setup is that the times can be less consistent if a hand or someones long hair prematurely breaks the beam - resulting in a slower time. The in-beam start seems to be more consistent for static starts, where break beam is more consistent on flying starts. It may also be dictated by the height of the beam that you set (which part of the body breaks the beam).

If athletes are wearing spikes on the track, we extended the deceleration zone to 15-20 meters so that they are not rushed to stop.

Thank you! @@DerekMHansen

I get it now

What I fear most is that people will lobby for grass fields only, and then find out the injury totals haven't changed at all. If we gave the teams longer periods of time in the off-season to train athletes consistently, many of these injury totals could be reduced significantly.

@@DerekMHansen I don't want anybody hurt, but I hope they do go all grass just to prove it doesn't matter. Nobody likes to listen to the facts. Jk Dobbins tore his Achilles Sunday on grass but nobody is talking about that, only Rodgers on turf because he's a key player.

@@briantaylor2096 It may come to that. All we can do is wait and see. $$$ always make decisions in these cases.

I think you make the key point that these high level players play on so many different surfaces. It would be interesting to look at the NHL and ice quality differences, although it can vary from night tonight. The NBA and the court quality and MLB where every ballpark is different. That would be a tough analysis but with AI maybe someone can do it. It would be fascinating.

@@steveo3831 Very true. I think it goes back to an athletes off-season training and how well it prepares them for the environments and surfaces they will encounter. If you have a robust training program, you will naturally be more adaptable when new scenarios are encountered.

I'm producing a specialized course for this concept for later this Fall.

I'll be producing a detailed course on this concept this Fall.

Conveniently both will be improved. I will be posting more info on this phenomenon soon too. It is a great protocol for kids. Much better for sport specific conditioning than making them go for long runs.

@@DerekMHansen totally agree, its way more fun. My son and I have been doing 10x10 for 3 sets with 2 min rests. Definitely gets him working....I should probably squeeze in some tempo run on other days too.

@@dinkokacarevic8405 If you want to focus on speed, get him to take his time setting up between each 10m sprint, and then take 4-5 min between sets.

Yes - pretty happy with the 4k 120fps for outdoor shooting. I kind of miss having a viewfinder, but I seem to be adapting.

😊😅😮😢🎉😂❤​@@DerekMHansen

I just found this academic paper that looked at ACL injuries in pro soccer league across 5 seasons. I’m still reading but so far very interring. 2 things I found interesting so far. (1) Training injury rate is higher than match day rates. There is speculation that this could be attributed to quality of training field v stadium field. (2) 37 total players were studied - 18 were contact injuries and 19 were non-contact. I’m still reading it but interesting info. bmjopensem.bmj.com/content/bmjosem/4/1/e000461.full.pdf

Hello Errol. I would say that if you are on-boarding athletes in a preparatory phase and getting them into shape, you could specify a 70% perceived effort to make sure they completed the 10 reps adequately. If they are in good shape and have some sprint volume accumulated over 6-8 weeks, you could specify a 90% effort. If you want to me precise you can use timing gates on 5 segments in one direction and calculate from their best 10m effort. I’ll often use cumulative times over 10 reps starting between 90-120 sec per rep. We’ve done conditioning sets at Level 10 in North Vancouver in the winter in 65-70 sec sets.

@DerekMHansen many thanks for the prompt reply and giving this a go with my 1 and 200m athletes tonight at 90%!

I think it works a bit better for 200m and 400m events, countering the effects of fatigue for those longer sprints.

Yes. We have had many athletes comment that they have noticed upper body hypertrophy in their arms, shoulders and chest.

I like the sleds with two runners (as opposed to a flat pan) as the smaller surface area create less difference on various surfaces. You can get a decent sled on Amazon for about $60.

Pretty much every distance.

Early in a training program I might use the sled 2x per week and then gradually taper to one day a week. Closer to competitions, I'm not using the sled at all.

I'm very careful with sled loads, as I've seen a lot of injuries to the lower leg and foot.

Exer-genie speed trainer 60 meters. Kost 380 euro

@@royekkel2556 Yes - there are a number of friction based devices using a rope line that are under $500. www.performbetter.com/The-Trainer

Years ago I bought a used isorobic exerciser and changed the rope on it. Cost me something like 50 bucks total.

I will watch out the exergenie with 250€ it’s the best I think

Appriciate that all help ? Please continue to mention when you find some new

I agree. As someone who is getting on in my years, sprinting uphill for short distances is a great way to stay in shape, but also avoid the impacts related to deceleration. Braking is the part that creates the most wear-and-tear.