Recognising, Quantifying and Managing Stress
Stress is Good
Stress can come from a variety of different sources and can be an emotional response or a physiological process. Stress can be a positive experience; increased work-load may eventually lead to a promotion and the stress of raising a child can be fulfilling. In the athletic world, stressing the mind and body to almost breaking point is probably the only way to win an Olympic gold medal in most sports.
Training for triathlons puts the body under varying degrees of stress. As training load increases, the musculoskeletal and cardiovascular systems are stressed and then adapt during the recovery phases of training. Without stressing the body, a person will not get fitter/faster/stronger.
Too much Stress can be Bad
Prolonged periods of stress can lead to psychological or physical break-down. The process leading to this is complex but largely involves the hormone Cortisol - often referred to as the ‘stress hormone’.
At normal levels Cortisol helps regulate glucose metabolism, blood pressure, immune function and is released in higher levels at times of stress to help in the body’s ‘fight or flight’ response.
Prolonged levels of high Cortisol in the bloodstream has been shown to:
- Affect the persons ability to relax
- Raise blood pressure
- Lower immunity
- Decrease bone density
- Decrease muscle tissue
It is easy to see how damaging raised Cortisol can be on an athlete and how emotional stress can lead to musculoskeletal injuries and illness.
Recognising Stress
As I mentioned in my previous blog, April was going to be a very busy month for me. I started my Level 3 BTF coaching qualification in April, so I spent two consecutive weekends at Bath University and then on the 29th I had the final assessment day of my Level 2 BTF coaching qualification. I recognised that I was going to have to reduce my training volume during April to cope with the increased travelling, reduced sleep quality and increased study time, otherwise I risked becoming ill or injured.
As a physiotherapist, I regularly come into contact with people and athletes who are experiencing high levels of emotional stress and this has manifested as aches, pains and injuries. They have failed to recognise that the stress they have been under has been excessive or have been unable/unwilling to manage it sufficiently.
During the past two months I have been treating the injuries of runners training for the London and Manchester Marathons. Most of these injuries have been due to increasing running mileage too quickly, physically (and often emotionally) over-stressing the body and not giving sufficient time for the body to adapt. Some athletes are in denial and continue to try to train through pain which often ends in failure to achieve their goals.
The stress of injury can lead to emotional stress and raise Cortisol levels, which can leave the athlete more at risk of further injury and effect the healing process. It’s a vicious-circle.
My job involves helping people to recognise the damaging effects that stress is having on their body. Learning from my own mistakes and those of other athletes has enabled me to recognise and manage my own training stress more effectively. Hence the decision to back-off on my own training during April when I was going to be under a higher level of emotional stress.
Quantifying Stress
But how can an athlete or coach quantify training stress?
There has been a lot of discussion about TSS (Training Stress Score) recently and interviews with Hunter Allen and Paul Newsome on the IMTalk podcast have discussed this subject.
http://www.imtalk.me/home/2012/4/2/imtalk-episode-305-hunter-allen.html
http://www.imtalk.me/home/2012/4/16/imtalk-episode-307-alan-couzens-and-paul-newsome.html
The concept of quantifying TSS is outlined by Joe Friel in this Training Peaks article;
http://home.trainingpeaks.com/articles/cycling/estimating-training-stress-score-(tss)-by-joe-friel.aspx
Matt Dixon from Purple Patch fitness discussed in an interview for MarathonTalk podcast how he uses a program called ‘Restwise’ to quantify recovery.
http://www.marathontalk.com/podcast/episode_75_matt_dixon.php
http://www.purplepatchfitness.com/partners/restwise
These interviews and articles highlight that the top coaches in the triathlon world are recognising the positive effect that training stress places on the body, but are also using measuring tools to quantify that stress so that it can be managed.
Managing Stress
On the Level 3 BTF triathlon coaching course, the focus is predominantly on profiling, planning and delivering training programs to individual athletes. Tools to monitor the effects of training load have been introduced and these include:
- Resting heart rate
- Recording no. of hours of sleep and sleep quality
- Scoring fatigue levels out of five (1-very good 5-very bad)
- Scoring muscle soreness out of five (1-very good 5-very bad)
- Scoring ‘feel good factor’ out of five (1-very good 5-very bad)
If these scores are recorded on a regular basis then the athlete and coach can look for trends.
Resting heart rate is probably the most useful measure of overall stress and health. A great example of this is with an athlete I am coaching who ran the Manchester Marathon last weekend. In the 4 days before the race his resting heart rate was around 41 bpm. The day after the Marathon it was 51. The stress to his body of running a Marathon had raised his resting heart rate by 10 beats.
If the scores are recorded during a period of ‘light’ training to establish a baseline, then it acts as a benchmark to evaluate the effects of training from. As training stress scores rise this can be compared with actual training data and field tests to ensure that the training load is not too high.
Incorporating rest days and encouraging relaxation is also very important in managing psychological and training stress.
Some athletes use training as a way of dealing with psychological stress. This can be a positive thing but care should be taken not to over-stress the body at times when it may be more vulnerable to injury. For example, ‘smashing’ a set of 16x400’s on the track after a stressful day at work may increase the risk of injury. A steady 10 mile run may be more appropriate.
Training Log
So I decided to reduce my training volume in April in an attempt to manage my overall stress levels. My main focus however was to increase the length of my ‘long run’ each week. In the final week of April I did a 16 mile long run which means that I’m now back to where I was (distance-wise) before I injured my Achilles.
Mon 2/4/12 Swim 4,000m
Tues 3/4/12 Run 13.1 miles (6.56)
Wed 4/4/12 Turbo 1hr with 30mins moderately hard (207W total for the 1hr)
Thurs 5/4/12 Run 9 miles (6.56) with 4 miles in 25.37 (6.24)
Fri 6/4/12 - no training today - spending time with Mum and family party at Kelly’s parents.
Sat 7/4/12 another Rest Day!
Sun 8/4/12 Cycle 76.6 miles (16.9) including one lap of the Ironman bike course then a second climb over Winter Hill and back home via Scout Road and Horwich. Very wet and windy ride but enjoyed it. Ran 4 miles after including 5km in 20.40 (6.40) around Buille Hill Park. 5 hours total training time.
Mon 9/4/12 Swim 4,000m with Louise including 2,000m of paddle work
Tues 10/4/12 Turbo 1hr (ADI’s)
Wed 11/4/12 Run 9 miles (6.39) with 4 miles in 24.50 (6.12) felt good.
Thurs 12/4/11 1hr turbo (ADI’S) good power achieved on the descending intervals.
Fri 13/4/11 Run 14 miles (6.57)
Sat/Sun - coaching course in Bath - no training.
Mon 16/4/12 1hr turbo ADI’s
Tues 17/4/12 Run 9 miles (6.47) with 4 miles in 24.23 (6.05)
Wed 18/4/12 Swim 4,000m including 10x200m paddles/band/buoy
Thurs 19/4/12 1hr turbo (2x10min - 254 279W)
Fri 20/4/12 Run 15 miles (7.02)
Sat & Sun no training as on coaching course in Bath
Mon 23/4/12 Swim 3,000m including 7x200m with paddles and band. Losing the buoy to encourage a faster arm turnover.
Tues 24/4/12 1hr turbo (15x1min power intervals - max 360W)
Wed 25/4/12 Run 16 miles (6.53) without taking a gel.
Thurs 26/4/12 no training
Fri 27/4/12 no training
Sat 28/4/12 2hrs steady on turbo (210W) on salty water only. Interesting experiment. Started to feel a bit light headed at 90 mins then very hungry soon after but was able to hold the power throughout. Felt like it took longer to recover after the session.
Sun 29/4/12 no structured training as on final day of Level 2 course but did spend 2 hours in the pool doing a lot of drill work which was very good. Left arm weakness was highlighted.
Yesterday I passed my Level 2 BTF coaching qualification. In two weeks time I will be down in Bath again on the 3rd weekend of my Level 3 qualification but other than that it’s a much quieter month and my training volume will be higher in May than in April.
The key focus in May will be to get 2 or 3 quality rides in on my TT bike around the Ironman UK bike course at target IM pace - 20mph. At this point in time I have no idea how realistic it will be to hold an average speed of 20mph for 112 miles on the Bolton course, but by the end of May I will have answered that question.
This question is causing me a healthy amount of stress/anxiety - the right amount to motivate me to get out there and train!
















