Last post on the types of running outlined by Greg McMillan*, this time on the effects of speed training and sprint training. Speed training is a step up in pace, around a 3000m to 5km pace. Sprint training is as the name suggests, sprinting, or around 800m to 2500m pace (not that I could sprint for that long).
Speed maximises some of the physiological effects of stamina training:
- better fuel extraction
- coping with lactic acid more efficiently
- improvements in fast twitch action
- better extraction of oxygen from the blood
- overall efficiency of movement and breathing
During sprint training there’s not much room for any physiological changes as things like breathing, heart rate, oxygen consumption, etc, are all at their maximum. There are two key benefits:
- neuromuscular changes where groups of muscle fibres get in sync and start firing en masse; the body just gets better at moving your legs faster and faster
- at this pace there’s lots of lactate acid so training at this speed trains the body to deal with it and remove it as efficiently as possible
On top of that there are more improvements to the feel of your run – it’s smoother and more efficient and employs more of the body (from the torso down) to generate more power.
* The information on the benefits of different types of running in this and a few other posts is cribbed from Greg McMillan’s Six-Step Training System, Step #2: The 4 Key Training Zones – Endurance, Stamina, Speed & Sprint. For others, see posts tagged Greg McMillan.
From a lot of the reading I’ve been doing, if I’m going to run a full marathon anytime soon I’m going to need a heart-rate monitor (so no more sneering from me at technophile-runners if I go that route). Stamina running is defined by Greg McMillan* as when you’re running “between 30K and 8K race pace… [and] your heart rate is between 83 and 92% of its maximum.” Well yeah, guess I’ll need a monitor sometime if I’m to work out when I’m in that kind of zone.
The skinny on this kind of training is what it does to your body’s ability to deal with lactate and hydrogen ions, which join together to make lactic acid (before splitting apart again for some reason that’s not too clear to me). Light exercise produces lactate in low levels. Your body deals with low levels by moving it around the body where it can be recycled as fuel (called “shuttling”).
There’s a maximum level at which the body can deal with lactate before it starts to accumulate in the muscles and cause fatigue and tiredness. That’s your lactate threshold. Stamina training works to make the body more efficient at processing and shuttling the lactate and thereby raises the lactate threshold.
A similar process is at play with that hydrogen ion, which again can only be precessed by the body to a certain point. Once reached, acid accumulates in the body and you find yourself feeling damn tired.
According to McMillan, “that the speed at your lactate threshold is the most important factor in distance running success (5K to marathon racing). Push your lactate threshold faster and you will race faster over all distances.”
Seems fairly important then!
*The information on the benefits of different types of running in this and a few other posts is cribbed from Greg McMillan’s Six-Step Training System, Step #2: The 4 Key Training Zones – Endurance, Stamina, Speed & Sprint. For others, see posts tagged Greg McMillan.
In my mind these are long slow runs. Greg McMillan* defines it as between 30 seconds to 2 minutes slower per mile than your average marathon pace. So go figure what that really means (I have no idea). Key benefits are:
- Increases stroke volume (i.e., the amount of blood pumped by each heart beat) while in in the muscles there’s a increase in the number of capillaries that the deliver blood. The net result is more blood pumped and delivered to the muscles more efficiently.
- The body also becomes more more efficient at using fat as a fuel source so there’s less reliance on limited carbohydrate stores (muscle glycogen). Conversely it stimulates the muscles to store more glycogen, which can then fuel long or high intensity workouts.
- Changes to the nervous system include much more efficient use of slow-twitch muscle fibres (helps improve running economy) and some re-orienting of fast-twitch fibres which become more “endurance-like”.
*The information on the benefits of different types of running in this and forthcoming posts is cribbed from Greg McMillan’s Six-Step Training System, Step #2: The 4 Key Training Zones – Endurance, Stamina, Speed & Sprint.
Have been playing catch-up all week to get back to the training schedule. A couple of slow runs out to Point Jerningham and a decent 60 minute run to Greta Point and back. Starting to look ahead to the next half-marathon and might do one in Marton with a friend who’ll be out from the UK.
Meantime I’ve got some reading to get to soon:
Monday 15 June: 6km, 33 mins (slow to Point Jerningham and back)
Tuesday 16 June: 7km, 37 mins (slow to Point Jerningham and back up Boulcott St with AJ)
Wednesday 17 June: 11.5km, 59 mins (Great Point and back Terrace) – close to 12km
Had a good longish run out to Greta Point and back covering 10km in under 50 minutes – the fastest 10km I’ve done since before my son was born. Back then I managed 46 minutes on a slow undulating course in Berlin (coming second in my age group! First place ran about 40 minutes, third place was a pacesetter for some local teenagers and dropped out, and that was the size of the field in the 30 to 39s), and a 45:16 at Victoria Park in London.
If I put 45 minutes into the McMillan calculator it estimates that I can do a half-marathon in 1:40:08. So maybe something around the 1:45 mark isn’t totally out of the question… Noticed on the race info page that there’ll be pace-setters running the half at 1:40 and 1:50 pace, and a few others, but no 1:45.
Today’s run: 10km, 49 minutes
Took a long slow run round the back way and up to the Northand shops, over the top of the ridge and down through Thorndon. Back along the key and up Old Porirua Rd.
A friend in the UK was in touch to stress that I need hill running and a weekly long long run so today’s run covered at least the hilly angle and is a good starter for building up to 1.5 to 2 hour runs. He also sent through a link to the McMillan running calculator, that lets you input a sample time and it’ll work out optimal times for all distances as well as different training paces.
Based on the 50 minute 10km I ran earlier this week, the calculator thinks I should be able to run a half-marathon in 1:51:16. Something to aim for at least; certainly want to be under 2 hours and the closer to 1:45 the better. Here’s the full race times and training pace summary:
Today’s run: 13.5km, 78 mins