CYCLING PERFORMANCE TIPS
Last updated: 5/20/2018
NUTRITION FOR TRAINING
Developing your own nutrition program
(Training, Pre-event, during the ride, and post-event)
The following basic nutrition plan for the competitive athlete is based on
an understanding of the principles of the physiology of
nutrition covered elsewhere.
To review, the most important of these concepts include:
- a high carbohydrate training diet is a must to maximize your internal
(liver and muscle) glycogen stores.
- there may be a slight increase in daily protein requirements, with training,
but replacement needs can be met with 1 gram protein/kg body wt/day.
- When training regularly, or riding multiday, endurance events,
Caloric expenditures need to be consciously replaced to counteract the
appetite suppression that follows from long hours of training.
- a 3 day, pre event, carbohydrate loading program gives you an edge
in maximizing muscle/liver glycogen storage.
- A good breakfast the day of the event.
- a 4 hour pre event meal should be utilized to top off glycogen
- some riders experience intestinal distress or symptoms of hypoglycemia
if they eat in the 2 to 4 hours immediately before an event.
- Calories must be taken during an event of greater than 2 hours
duration to avoid depleting your internal energy (glycogen) stores. Solid
foods may offer some advantages in longer events, ridden at slower paces, but
in high exertion (> 70 - 80 % VO2max) liquid supplements minimize problems
from delayed gastric emptying.
- be particularly sensitive to your overall fluid balance
(loss vs replacement) as the risks of OVERHYDRATION as well as DEHYDRATION
increase with longer events. The best strategy is to weigh yourself regularly
during training as well as after/during longer events.
- salt replacement beyond that in a normal diet (ie commercially available
sports drinks) is necessary only under extreme conditions or in events
lasting 8 to 10 hours or more .
Having a plan and then sticking to that plan is the formula to ride at your best.
It has been shown that if you wait until you feel
you need to drink or eat, you are already
behind the curve - and then will never catch up. So you should aim for at least 1000
ml of fluid per hour and, if you are riding more than 2 hours, 90 grams of carbohydrate
supplementation as well. You can read more on replacement at
RECOMMENDED NUTRITION PLAN
The following comments are intended for maximizing glycogen stores for
competitive events and long distance recreational rides. They are NOT meant
as a general prescription for 1 to 2 hour weekend outings.
Specific recommendations based on type of ride can be
First, let's review a few tips that can be of benefit in a nutritional
BASELINE TRAINING DIET (the weeks and days
before the event)
- Eat a good breakfast each day - and work to balance your Caloric intake
throughout the day. This tantalizing
article from Medscape.com suggests that even an afternoon ride is compromised
by skipping breakfast even after eating a slightly greater than normal lunch
- Practice eating while cycling - your stomach needs to get used
to handling food while exercising. You cannot "train" your digestive
system to get bigger or stronger, but you can define your own limitations
and personal digestive quirks before the day of the big ride.
- Don't switch foods on ride day - stay with the on the bike foods
you are use to eating.
- Make it simple for your digestive system - use processed breads
rather than whole grains, liquids rather than solids, cooked vegetables
instead of raw ones, and minimize fat.
- Don't fill up before the finish - anything you eat in the last
30 minutes will probably still be in your stomach, and if you sprint at
the end, it increases the incidence of nausea and vomiting.
- Train more - the best way to improve digestive system functioning is
to get in better shape improving your cardiovascular training.
As you raise your peak level of performance, you widen the range of exertion
within which your stomach functions normally.
- determine your daily Caloric needs as outlined in the
section on energy requirements of cycling.
- calculate your body weight (BW) in kg (Wt in lbs x .455 = BW in kg)
- eat a baseline daily diet of:
- protein - 1.5 gm x BW in kg (multiply x 4 to get daily protein Calories)
- fat - 70 gm fat (the avg. American diet); at 9 Cal/gm = 630 Calories
- carbohydrates - the balance of your total daily Calories (total
requirements as calculated above minus protein Calories minus fat Calories)as starches, etc.
- modify that diet for the specific periods noted below
- Pre-event interval (4 days to the event)
- During the event
- Post event
PRE-EVENT INTERVAL (4 days to the event)
4 days prior to the event
- 9 gm carbohydrate/kg BW/day (approx. 600 grams/day)
- limit exercise to minimum needed to maintain flexibility
4 hours prior to the event
- eat a 300 gm complex carbohydrate meal (rice, starch, pancakes, etc.)
- a high Caloric density glucose polymer sports drink may be ideal here
- define your own physiologic limits if you are accustomed to eating in the 4 hours
interval before a ride - many riders get a psychological boost from eating a low fat meal
or a liquid carbohydrate drink/gel during this interval (and as a bonus can supplement
their internal glycogen stores for a ride of more than 1 to 2 hours)
4 minutes prior to the event
- 45 gm carbohydrate (candy bar for example)
Your pre event nutrition will be a key factor in
avoiding RED-S or the Relative Energy Deficiency in Sport. To do so will mean estimating your
Caloric needs for a competitive event (or day's training) and then actively
replacing them to avoid the fatigue associated with chronic glycogen depletion.
Although a good breakfast
will keep you headed in the right direction, a well planned pre ride nutrition program is key to
You can estimate how many Calories you will need. For the first 90 minutes,
they all are supplied from internal muscle and liver glycogen stores. But for longer rides you will need
additional supplemental carbohydrate Calories from snacks on the bike (or on their way toward the muscles from a pre ride meal
working its way through the digestive tract), or risk bonking.
Let's review the physiology behind choosing what to eat and the four most significant
factors that impact an athlete's digestion.
The optimal food for a rapid,
high energy boost during a ride is a semi-liquid or liquid carbohydrate with minimal if any fat.
On the other hand, an endurance athlete, competing at a lower VO2 max., might prefer complex carbohydrates with
some fat added to improve taste (generally in a solid form), to slow emptying from
the stomach and even out absorption over a longer period of time.
- Solid versus liquid - liquids are emptied from the stomach more quickly than solids.
- Fat content of the food - fat slows the digestive process and delays the availability of any Calories in the
food to the muscles.
- Sugar concentration - especially in liquids, a sugar content of more than 10% will slow
stomach emptying. (The use of complex carbohydrates, due to the decreased osmotic effect,
will offset this to some degree and offers an alternative strategy to maximize Caloric
intake to offset the metabolic needs of exercise.)
- Physical activity level of the cyclist - the mechanical activity of digestion is slowed by
any vigorous activity, usually starting at 70% VO2 max. Except in short, all out events, this
is rarely an issue, and it is much less so for cycling than for running where the additional
component of mechanical stimulation of abdominal contents from the sport itself slows digestive
DURING THE EVENT
- regular carbohydrate replacement - start immediately
- 60 gram of carbohydrate as a minimum per hour
- liquid preferred (i.e. sports drink)
- 10% concentration optimal (equivalent to a cola drink)
- start with half a water bottle (300 ml) in your stomach
- complex carbohydrate drinks permit additional Calories
- 800 ml/hour (a std water bottle = 590 ml)
- drink at 10 - 15 min. intervals
- 3 to 6 gm carbohydrate/ kg BW over the immediate 4 hours post event (100 grams per
hour) - start immediately
- a high Caloric density glucose polymer sports drink may be ideal here
- protein appears to expedite glycogen replacement
- 600 gm carb/day for 2 days to optimize repletion of muscle/liver glycogen.
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