Table 2 |
||||
|
Summary of strength of pairwise associations between reason to use and type of supplements used (all athletes who use supplements n = 520). |
||||
| Maintain strength |
Enhance endurance |
Able to train longer |
Doctors' advice |
|
|
|
||||
| Creatine |
.432 (< .001) |
NA |
.307 (< .001) |
NA |
| Iron |
NA |
.021(.632) |
NA |
.259 (< .001) |
| Ginseng |
NA |
NA |
.088a (.044) |
NA |
| Whey protein |
.434 (< .001) |
NA |
.245 (< .001) |
NA |
| Caffeine |
.273 (< .001) |
.220 (< .001) |
NA |
|
| Vitamin C |
NA |
NA |
.055 (.209) |
.003 (.944) |
|
|
||||
|
a expected association from anecdotal effect. Each cell displays the ϕ coefficient and the corresponding p-values in parentheses (NA = no association expected). |
||||
|
Petróczi et al. Journal of the International Society of Sports Nutrition 2007 4:19 doi:10.1186/1550-2783-4-19 |
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