Sunday, 20 October 2013

Stevenage half training: 12 mile long run

This week's long run was a bit tricky to fit in, I had to run on Saturday morning, in between helping set up the Scout's Jumble Sale and cooking for a dinner party in the evening. I had 2 hours in which to run, never a good idea to give yourself a time limit!

The weather was much warmer than last Saturday, when I ran 11 miles. Fortunately I had an over-sized drinks bottle full of cold water to keep me company (although it really annoyed me after a few miles). Unfortunately I dressed for last week's weather, so I was too hot for the whole run, despite the water. I also needed a wee almost immediately after I set off (I did contemplate weeing in a bush).

I spent the first two miles weighing up the options of running two 6 mile runs (Standalone 10K route), so I could go home to drop my drinks bottle off and have a wee, but I decided I would never go out for the second lap. After that decision was made, I then couldn't decide whether to run last week's route with a bit added on at the end, or the full Greenway route (which would be a 14 mile run in total). The time limit I'd given myself was bothering me though, so I decided the 12 mile route was the best idea.

As I did last week, I kept my heart rate below 140 for the whole run, walking when it got too high. It got high a lot this week, possibly because of the heat rather than anything else, although I kept a closer eye on it and it never rose above 146, so perhaps I was a bit too keen. (When I checked my stats on FetchEveryone later, it said my 70% recovery was 146, so I think I've been walking unnecessarily...)

I felt a lot more tired around 9 miles, I ran past an elderly couple on Radwell Meadows, and said hello and "I don't feel like I'm moving at all!" Plod plod plod. But as soon as I got back to Stotfold for my extra mile I felt much better. I think next week I might add the extra distance on at the beginning rather than the end, because running near my home, only to turn back for another 2 miles, is quite hard.

So this run was quite tough, I had a lot to think about! But I did it, and finished in 2 hours and 9 minutes. Not massively over my self-imposed limit. And the rest of the day ran to military precision.

Next training run will be an interval session. Time to get my heart rate high and my legs moving fast :-)

Wednesday, 16 October 2013

Training to heart rate: week one progress

Low and slow

Last Saturday I ran 11 miles as part of training for the Stevenage half marathon. The aim was to keep my heart rate low, under 140 bpm, throughout. This strategy helps to increase endurance because at this HR level your body burns fat (that we have plenty of) rather than glycogen (that runs out after a time). It's all about building new muscle fibres of the "correct" type. See my previous blog on this subject!

I had to take several walk breaks to keep HR low, mainly when I was halfway up a hill, but not as many as I thought I might. And my average pace wasn't as "slow" as I feared either, a respectable 10:30 min/mile. I hit a lovely flat section through Letchworth, and HR fell so much I was able to speed up.

I noticed some knee, ankle, and shin niggles while running, but these went as soon as I corrected my posture, cadence, and foot strike. Reading Born To Run has reinforced what I've been told previously about running style! I also read this week something Hal Higdon said about having to concentrate on running to do it properly, like you would at work (for example). One of the reasons I don't listen to music when I run, because I like to "hear" my feet and my breathing.

I finished the run in 1 hour and 55 minutes. I was very pleased with how I felt, apart from an aching right knee I didn't feel tired and could have carried on. I didn't take food with me, I'd prefer to avoid gels at the moment, now I'm training to burn fat. It would defeat the purpose to run slow but then take glycogen... I know I can tolerate gels so I'll save them for race day. 

This weekend I'm running between 12 and 14 (full Greenway route), nice and slow as before.

Fast peaks

Tonight I wanted to incorporate some speedwork into half marathon training. I ran 6 miles, but kept the first mile and a half and last mile and a half slow, with HR aimed at <140. These were my warm up and cool down periods, defined properly by HR. 

The mile after my warm up coincided with a Strava segment from Fairfield Park exit to Wilbury Hills roundabout. I wanted to see how fast I could run it, and where I would place in the leader board! Hit my max HR (175) during this mile, which was around 7:35 mile/min pace. And I was 3rd female overall on Strava :)

The mile return was kept slow and low again, then a final fast mile segment before my cool down. Hit 7:22 min/mile and placed 6th overall on Strava for that segment. OK, I'm a bit obsessed with those segments, but I don't like being down the bottom of the board!

Just over an hour run for the 10K, but I'm happy because I achieved everything I wanted to, high and low HR, in the correct training zones, and good pace. 

Bring on tomorrow's club run and my next long run! I'm (finally) enjoying running again :)

Friday, 11 October 2013

From the archives: Stevenage half marathon 2011

I've finally signed up to run Stevenage half marathon in November, after procrastinating about it for a few weeks. I have 3 weeks to prepare myself mentally, to lose a bit of weight, and to get myself used to running further than 10K.

I ran this race back in 2011, it was only my second half marathon, and I was really happy because I ran sub 1:50. The course is quite nice, considering it's in Stevenage: mainly along paths and through underpasses, but part of the course is through Fairlands Valley Park, around the lake.

My aim this time round is to obtain a SB (need to beat 1:51:26 to do that), hopefully beat my 2011 time (1:49:55) for a course record, and with a bit of luck beat the PB I set in 2012 when I ran the Greenway Challenge with a friend (1:46:31).

Here's my 2011 blog about the race!


So, November 6th, 2011. The 25th Stevenage Half Marathon. I signed up to run this event at the last minute (last minute for me!). I usually like to have several months to prepare for races but I only signed up for this a few weeks ago. I was "race-ready" though, because after finishing Fleetwood I wanted to maintain the distance I'd trained up to, so I'd been running 8 and 10 miles as recreation. I know, I'm mad.

A few other members of Stotfold Runners were running the event, Ed and Scott, and it was lovely to have them and their families around for support during the race and at the end. (My family are a bit "race-fatigued", this is my 5th race this year, so they stayed at home.) So huge thanks to them, and to Scott's family for driving me there and back and looking after me :)

So, my previous PB for a half marathon was 1:52:40 and my "secret aim-for time" for this race was 1:50:00. I really wanted to beat my PB but I wasn't sure I could because the Stevenage course was more undulating than Fleetwood. This course was run on underpasses and cycleways around Stevenage, and through Fairlands Valley Park, so lots of hills and slopes! But, with up bits come down bits as I always tell myself.

We ran two laps of the course, the second lap being slightly longer through the Park. I started slowly because I'm always being advised (nagged) by Pete L from running club to start slowly and build up speed. First two miles were comfortable, then I remembered I wanted to get a good time! So I started to up my pace.

I took my energy gel at 5 miles (just after I ran past Burger King) and just before the second water station. I had a few slower miles after this, possibly because I was on lap 2 and it was a bit more uphill and a bit of a psychological downer. But I sped up through the Park (although I was overtaken twice), and got a lovely boost when I saw Ed's wife cheering me on!

When I passed Burger King again I had a "moment" when I remembered being fat in January and I decided to really try and crack sub 1:50. So my last few miles were corkers. I'm not sure where my energy came from, or why I didn't fall over. And I should say that I really hate finishing on a running track, those last few metres are killers. But when I heard "Come on Sarah!" shouted by Scott's wife Julie I found enough energy to sprint. I even heard another runner mutter "great finish" as I passed him :)

We got no cake at the end :( I hate bananas. I ate the banana I was given, but I hate bananas. Got a lovely silver shoe trophy though :)


Wednesday, 9 October 2013

Training to heart rate: why bother?

A lot of people ask me "How can I run faster?", and my usual reply is "Interval training"! Short fast runs (speedwork), including interval training and hill training, will help your legs get used to running faster in the long term, whereas long slow runs will build up your endurance so you can run further.

There is a scientific reason though, and it's about types of muscle.

I blogged a few years ago about why we need to vary the types of run we do, and the post is pasted below. It also explains why we should bother to train to heart rate (see also my blog on heart rate zones).

Energy sources
Our body contains two types of energy source: glycogen and fat. When you begin a run or workout, your body "fires up" and starts to burn glycogen without oxygen (anaerobic metabolism). This warm-up phase lasts a maximum of 2 minutes, after which your body begins to burn the glycogen with oxygen (aerobic metabolism). After 30 minutes of your run or workout you begin to burn fat aerobically; this process is the most efficient way to produce energy and is what will get you through an endurance race. You still need glycogen as a back-up (for dealing with hills and a sprint finish!), so training your body to burn fat rather than glycogen (and therefore saving this vital energy source for "emergencies") is important.

Muscle types
Muscles are formed of two types of cells (or fibres): slow-twitch and fast-twitch. Slow-twitch cells have a high oxygen content (for aerobic metabolism) and burn fat; they are therefore most important for endurance. Fast-twitch cells create energy from glycogen without oxygen (anaerobic metabolism); a by-product of this process is lactic acid, which creates that painful burning sensation when you train hard. Increasing the amount of fast-twitch muscle cells will help you deal with this burning pain (sprinters have a lot of this muscle-cell type).

How the science fits with training
"Easy" training days at 70% recovery heart rate increase the number of slow-twitch cells, thereby teaching your muscles to burn fat (and saving your glycogen for another day). By increasing your muscles' fat-burning potential you are not only getting fitter but also boosting aerobic capacity, the ability to burn energy with oxygen.

But you do need some capacity for anaerobic metabolism (without oxygen, glycogen-burning); anaerobic metabolism is going to get you started on a run or workout and will propel you up a hill quickly, but will make your muscles burn from the pain of lactic acid build-up. A "hard" training day or interval training---when you run for short distances at your 85% threshold ceiling heart rate---helps your body develop more fast-twitch cells to deal with the pain of lactic acid build up.

"Hitting the wall" (basically, when your legs stop working) happens when you've run out of glycogen. So easy training days---teaching your muscles to burn fat---are really important so you have glycogen available when you need it.

That's my very simple explanation of why it's important to run or workout at these two different heart rate zones. For more details I suggest you read Heart Monitor Training for the Compleat Idiot by John Parker or borrow a book from your library on sports biochemistry or muscle metabolism (there are lots out there).

Training to heart rate: resting, max, and zones

My aim for the rest of this year is to begin training to heart rate again. I last did this in May 2011, so quite a while ago. I keep an eye on my heart rate during most runs, but I've noticed "easy" runs, during which my heart rate shouldn't rise over 140, tend to average at 150 bpm. I need to start again.

I blogged about heart rate back in 2011 on my TWATS blog (I never realised it spelt that...). I've reposted it here, and another will follow.


As soon as I got my new Garmin watch for measuring and analysing my runs, I began to wonder why monitoring my heart rate while on a run would be useful. We all have unique resting and maximum heart rates, and knowing these values can assist with training for races and other activities. 

I googled heart rate monitoring and found this site, which introduced to me the idea of heart rate zones. It also provided a method to calculate your max heart rate based on your age (from which you can calculate these zones). I did the calculation, but I didn't really understand the part about zones or what I should be aiming to do. 

Thankfully, a friend offered to lend me an excellent book: Heart Monitor Training for the Compleat Idiot. This book contains another calculation for max heart rate (slightly different from that on the above website), but stressed the importance of doing a physical test to ascertain your max heart rate. 

Max heart rate 

The calculation in the book is 205 - {half your age} (+ 5 if you're a woman). Which gave me a rough max heart rate of 193 bpm. 

The max heart rate test suggested in the book consists of a short warm-up run, stretches, and a 100 m sprint to get your heart rate up, followed by a series of 5 short uphill sprints (200 m), with recovery jogs downhill in between, gradually increasing the intensity of each uphill run. 

My local running club does sprint sessions every so often, and it just so happened that a session similar to the above test was done a few days after I got my watch :) And my max heart rate peaked at 181 bpm, which I have now set as my max. (Goes to show how inaccurate the calculation can be.) 

Resting heart rate 

The test for this rate is nice and easy! The book suggests you strap your heart monitor on soon after waking in the morning and just lie there for a few minutes. (And you are allowed to go back to sleep!) My resting heart rate was 40 bpm (whoop, super athlete NOT). 

Training zones 

Here comes the section I was most confused about. What are heart rate zones and why should I care? Apparently, two zones are most important: the recovery ceiling (70% level) and the threshold floor (85% level). You can calculate these based on your max and resting rates. 

For example: (Max - Resting) x 0.70 + resting = 70% level 

My 70% level is 139 bpm and my 85% level is 160 bpm. The book recommends you keep your heart rate below the 70% level on 'easy' run days and at the 85% level on 'hard' days. 

 More about training here.

Standalone 10K, 2013

Last Sunday I ran in a local 10K road race, the Standalone 10K, which is organised by North Herts Road Runners. This race is a big one for my running club, Stotfold Runners, because it is our most local race; it passes through our town, we run the route a lot during the year in preparation, and we encourage all our members to take part. I last ran this race in 2011, taking a break in 2012 to recover from a knee injury, so I was really excited to be running it again this year.

The race starts and ends at Standalone Farm in Letchworth, goes through Norton to Stotfold, along the A507, and then past Fairfield Park back to the farm. There are a few hills, the worse one (I think!) is right at the start, so it's not too daunting a course.

The farm was packed when we arrived. Amazingly, I still managed to find my friends before the start! Had some photos with the club (see image), and exchanged some friendly race banter with Ed, whose aim at the beginning of the year was to beat me (mine to stay close to him!)



The race was full, with 1400 runners in total. Apart from the Preston Marathon last year, it's the biggest race I've taken part in. The atmosphere is amazing, so many people together doing the same thing. It's all very emotional *sniff* :-)

I walked to the race start with other members of Stotfold Runners, and I lined up with Ed and another friend just before the 50 minute marker. We didn't want to put too much pressure on ourselves and start at 45 minutes :-) The first section of the race is downhill (about 50 metres!) but we took this slowly because of the number of runners. The first (and biggest) hill is immediately after the start, and again I couldn't run up it quickly because of the number of runners in front of me. (Should've started at 45 minutes.) Followed Ed's example and took to the pavement, dodging spectators and small children. 

Once at the top of the hill I felt OK and tried to maintain some speed, keeping an eye on Ed all the time! At about 3K I sailed past another club friend who I thought was a lot faster than me, he seemed to be taking things easy and was doing a great job of thanking every marshall we passed :-) Had to run over the grimmest roadkill at this point too (splatted squirrel). At the water station at 5K I spotted a friend supporting (it's so nice to see people you know!). I didn't take on water because I was running fine and don't usually take a drink during a 10K.

As we hit the A507 the route narrowed and suddenly everyone in front of me stopped to funnel into the smaller area. I'm not one for being politely English during a race so I took to the grass verge so I could maintain my speed. Unfortunately caught a few nettles on the way, so spent the next 5 minutes cursing myself.

By the end of the bypass, as we turned towards Fairfield Park, the sun came out, the heat rose, and my legs suddenly slowed to nothing. I'd completely run out of energy. I really wanted to walk, but there were so many people spectating that I didn't dare stop in case someone I knew saw me! I kept looking at my Garmin to check my pace, and I was getting upset with myself because I was running at 8:30 min/mile (and I needed at least 8:00). In a big strop I switched the display to heart rate and just decided to grit my teeth and plod home.

The last few K were hard because they are uphill; during training I always tell myself they're not hills, it's just a deceiving view! They were certainly hills today. Spotted the Stotfold Runners banner and The Luxfords supporting at 9K, and I got a bit of a boost here. I knew I was almost finished, and I could hear the announcements at the farm.

At this point the marshalls made us run on the pavement. I wasn't happy with this change because we've never had to run here before, but I think they'd not been able to close the road at the top and it was quite busy. Anyway, that put me off a bit because the pavement is narrow and turns quite sharply. I took the final downhill stretch easy so as not to destroy my knees, then turned into the farm to finish. Tried hard to sprint to the line but it really wasn't happening for me. Finish time: 50:03 (should've kept an eye on the clock rather than my heart rate!)



Plus points: Fastest 10K all year.
Moral: Never Give Up.
Lessons for the future: Focus on longer midweek runs and pre-race nutrition.

And yes, Ed beat me! He got a great PB (48:10) too, so well done him. We grabbed our bananas and T-shirts and headed back to the course to pick up some of the club runners who might need support. I ran-walked with a friend for another 1.5K to get her back in just over 70 minutes (she was very happy).

Sunday, 15 September 2013

Baldock 10K: will the hills ever end?

Today I ran in the inaugural Baldock 10K, starting at Newnham, to Bygrave, Ashwell, then back to Newnham. I cycled to the race start with my friend Tracey, since it was only a couple of miles away and we thought it would be a good warm up. We didn't count on our woeful cycling/gear changing and I forgot there were hills. So legs were a bit tired when we arrived!

The race HQ was located in an industrial estate, with the baggage store in a farmer's grain store (complete with combine harvester) and toilets in Reclamation Russell's office (if you see any mirrors, send them to Russell). There was BBQ (supplied by Chapman's butcher) at the start, and I had my eye on a bacon roll for when I'd finished the race.

The start was quite a walk from the HQ, up a farm track. Organisation was a bit hit-and-miss with the timing, the "timing man" couldn't get his van to the start line to put down the mat, so he had to carry all his equipment through the runners. (I did offer to help him but no-one else seemed bothered.) He just slapped the mat down randomly and we were almost ready to go. As usual, we (me, Tracey, and Ralph) were at the front, Dave Lawson has a lot to answer for.

I had a slight idea of the route from a pre-race report published on the organiser's website. I wasn't quite prepared for the muddy conditions though. The first mile was across a farmer's field. It started gravelly with some puddles, it soon turned into thick mud. My shoes were caked, and I was carrying extra weight on my feet. Made the first few km very hard.

Once we hit the road at Bygrave the mud started to fly off my shoes, although we were then hit with a hill for a mile. My legs were starting to protest! I picked up a young lad who seemed to be running a good pace and we ran together for the next few miles, chatting to each other every so often about our hoped-for finish times (about 50 minutes).

When we entered Ashwell we had more hazards to think about: the narrow pavements (couldn't run on the road because of parked cars), stone steps, bushes, and startled old ladies (my personal favourite). There was a nasty hill out of Ashwell, I had to push hard at this point (I'd lost my young man *sniff*). One of the runners behind told me at the finish that he'd been focusing on my back (you know he really meant arse) hoping to catch me up but I was "too strong". Hurrah!

A lovely flat stretch for the final mile was improved 100% by spotting Jane and her young support crew cheering us on. I could also see the smoke from the BBQ so I knew I was close. Unfortunately, a glance at my watch showed me I'd be very lucky to break 50 minutes, even if I ran a 7 minute mile. So I didn't. I resigned myself to 50-something and cruised home. Was lovely to see Ralph and Tracey with their medals!

My official time was 51:45, which I'm pleased with considering I had planned to run this as a training run for Standalone 10K, and in view of all those hills. (As I ran up the first hill, I vowed never to run a race around Baldock again, so please remind me next year when I'm considering Baldock Beast again.) Details of the run are below.


We obviously had to cycle home again, but first we stuck around for the presentation, because Tracey came third lady! Well done Tracey :)

The cycle home was hilarious. We couldn't get going up the hills, and Ralph (who ran home) was way ahead of us! He probably could've beat us home but, as a gentleman, he escorted us through the fields through Radwell back to Stotfold. So. Much. Mud. And tree roots. And just a lot of shrieking. Tracey and I have vowed never to do a triathlon.