Table 1 Search strategy and results from each included database

1. Exercise

195,255

277,329

61,991

83,075

165,077

2. Exercising

6,474

7,981

1,441

224,807

3,909

3. Endurance

21,579

23,146

5,353

24,920

19,791

4. Performance

456,095

712,833

59,983

1,652,852

130,350

5. Pace

9,687

12,271

2,880

46,122

5,847

6. Pacing

30,907

35,549

6,433

174,740

12,163

7. Sport

12,294

58,671

4,820

56,118

650,712

8. Sports

45,270

41,390

17,268

As above

650,460

9. Sporting

2,332

3,711

2,719

As above

101,200

10. Aerobic

47,428

68,495

6,143

59,356

21,497

11. OR/terms 1 to 10

74,560

1,114,664

137,399

2,094,266

871,407

12. Pre-cool

7

10

1

47

3

13. Pre-cool

7

13

0

494

2

14. Pre-cooling

115

193

18

544

50

15. Pre-cooling

51

94

7

473

48

16. Pre-cooled

144

141

3

258

4

17. Pre-cooled

76

75

0

473

1

18. Cool

4,854

6,454

905

214,304

2,906

19. Cooled

7,789

9,630

231

204,690

200

20. Cooling

22,183

31,464

940

As above

1,145

21. OR/terms 12 to 20

31,903

43,280

1,919

214,676

4,022

22. 11 AND 21

2,489

3,606

326

25,367

2,233

23. Limit 22 to English language

2,373

3,358

322

1,089^a

2,147