Table 1.
Study population demographics (N = 50)
| n | Percentage | ||
|---|---|---|---|
| Free testosterone, ng/mL, mean (SD) | 551.98 (168.58) | ||
| Age in years, mean (SD) | 20.5 (0.79) | ||
| 1 | Type of Diet | ||
| Lacto-Vegan (Vegetarian) | 17 | 34 | |
| Eggetarian (Vegetarian consuming eggs and egg products) | 7 | 14 | |
| Non-Vegetarian | 26 | 52 | |
| 2 | Type of Exercise/Sports: | ||
| Hypertrophy training / Strength training at the gym | 17 | 34 | |
| Cardiovascular exercise / Sport | 19 | 38 | |
| No exercise | 14 | 28 | |
| 3 | Exercise Frequency | ||
| Intense daily exercise + physical job/activity | 14 | 28 | |
| Moderately active | 17 | 34 | |
| Lightly active | 11 | 22 | |
| no exercise | 8 | 16 | |
| 4 | Tea Consumption | ||
| Daily | 22 | 44 | |
| Several times a week | 19 | 38 | |
| Rarely / Never | 9 | 18 | |
| 5 | Carbonated Beverages/Soft Drinks | ||
| Daily | 6 | 12 | |
| Several times a week | 18 | 36 | |
| Rarely / Never | 26 | 52 | |
| 6 | Caffeine Intake | ||
| Daily | 13 | 26 | |
| Several times a week | 22 | 44 | |
| Rarely / Never | 15 | 30 | |
| 7 | Tobacco Use | ||
| Daily | 10 | 20 | |
| Several times a week | 12 | 24 | |
| Rarely / Never | 28 | 56 | |
| 8 | Soya-Based Product Consumption | ||
| Daily | 4 | 8 | |
| Several times a week | 4 | 8 | |
| Rarely / Never | 42 | 84 | |
| 9 | Junk Food Intake | ||
| Daily | 15 | 30 | |
| Several times a week | 20 | 40 | |
| Rarely / Never | 15 | 30 | |
| 10 | Dairy Product Consumption | ||
| Daily | 16 | 32 | |
| Several times a week | 22 | 44 | |
| Rarely / Never | 12 | 24 | |
| 11 | Sleep Duration | ||
| Less than 6 h | 5 | 10 | |
| 6 to 8 h | 37 | 74 | |
| More than 8 h | 8 | 16 | |
| 12 | Sunlight Exposure | ||
| Less than 20 min | 39 | 78 | |
| 20 to 60 min | 8 | 16 | |
| More than 60 min | 3 | 6 | |
| 13 | Supplement Use | ||
| No | 39 | 78 | |
| Yes (any) | 11 | 22 |