Appendix.

Questionnaire^a Continued on Next Page

Many thanks for taking part in this questionnaire. If you are not clear about any of the questions, please feel free to ask the researcher. Please answer the questions in order by putting a tick in the box or writing an answer on the line.
Background information about you as a runner:
1)	Is this your first marathon?
	Yes _____ (and if Yes, please go to question 3)
	No _____
	If this is not your first marathon, how many previous marathons have you run? (please tick)
	1 _____
	2–4 _____
	5–9 _____
	10 or more marathons _____
2)	What is your fastest time? _____h _____min
3)	What is your estimated finishing time? _____h _____min
4)	Are you running on behalf of a charity?
	Yes _____
	No _____
	If Yes, which charity? ___________________________________________
5)	Are you a member of a Running club?
	Yes _____
	No _____
6)	Gender:
	Male _____
	Female _____
7)	Age: _____y
8)	How tall are you? _____
9)	What is your weight? _____
Information on drinking on marathon day:
10)	Have you read about or been told about drinking fluids on marathon day?
	Yes _____
	No _____ (if No, please go to question 11)
	If Yes, where have you received this information from? (please tick all that apply)
	London Marathon magazine _____
	London Marathon Web site _____
	Running club _____
	Running coach _____
	Running friends _____
	Running magazine _____ (if so, which magazine?) ___________________
	Running book _____ (if so, which book?) _______________________
	From the charity for which you are running _____
	Other sources of information (please specify; eg, other online source, smartphone app, library book etc) __________________________________
Before the marathon:
11)	Do you have any plans about drinking in the morning before the start of the marathon?
	Yes _____
	No _____ (if No, please go to question 15)
12)	If Yes, what are you planning to drink? _____________________________
13)	How much are you planning to drink? _______________________________
14)	When are you planning to drink this? _______________________________
During the marathon:
15)	Do you have any plans about drinking during the race?
	Yes _____
	No _____ (if No, please go to question 19)
16)	If Yes, what are you planning to drink? _____________________________
17)	How much are you planning to drink? ____________________________
18)	At what stages of the race are you planning to drink?
	______________________________________________________________________
	______________________________________________________________________
19)	Some people carry their own drinks from the start of the race – do you intend to do that?
	Yes _____
	No _____ (if No, please go to question 25)
20)	If Yes, what drink will you carry? _______________________________
21)	What volume will you carry? __________________________________
22)	Do you plan to drink water provided in bottles at water stations during the race?
	Yes _____
	No _____ (if No, please go to question 25)
23)	If yes, at how many water stations will you take bottles of water? _____
24)	How much of each bottle do you anticipate that you will drink?
	A few sips _____
	Several mouthfuls _____
	Half the bottle _____
	Most or all of the bottle _____
25)	Do you plan to drink the sports drink (Lucozade) provided at the drink stations during the race?
	Yes _____
	No _____ (if No, please go to question 28)
26)	If Yes, at how many drink stations will you take a sports drink? _____
27)	How much of each pack do you anticipate that you will drink?
	A few sips _____
	Several mouthfuls _____
	Half the pack _____
	Most or all of the pack _____
28)	What is the volume of each water bottle given out on the course?
	(please estimate if you don't know exactly) _____mls
29)	What is the volume of each pack of sports drinks given out on the course?
	(please estimate if you don't know exactly) _____mls
30)	What factors may affect how much you drink in order of importance?
	(please mark '1′ for the most important for you, '2′ for the second, '3′ for the third most important and '4′ for the least important)
	My plan _____
	How thirsty I feel _____
	The temperature on race day _____
	Other (please specify) _____________________________
31)	Have you practised drinking water during your training?
	Yes _____
	No _____
32)	Have you practised drinking a sports drink during your training?
	Yes _____
	No _____
After the marathon:
33)	Do you have any plans about drinking in the 6 hours after the marathon?
	Yes _____
	No _____ (if No, please go to question 37)
34)	If Yes, what are you planning to drink? _____________________________
35)	How much are you planning to drink? _____________________________
36)	How often are you planning to drink? _____________________________
Information about fluids:
37)	Do you feel that you know enough about what and how much to drink on marathon day?
	Yes _____
	No _____
	If No, what would help you to be better informed for future races?
	______________________________________________________________________
	______________________________________________________________________
38)	Have you heard of the term 'hyponatraemia' (low salt or sodium levels)
	Yes _____
	No _____
	If Yes, what is your understanding of its causes and effects?
	______________________________________________________________________
	______________________________________________________________________
39)	Do you have any other comments about drinking fluids on marathon day?
	______________________________________________________________________
	______________________________________________________________________
Many thanks for completing this questionnaire. Please return it to the researcher.

^aThe questionnaire is reproduced in its original form except that underlined spaces replaced boxes for answers.