The effects of an ecdysteroid supplement on indices of physical and mental performance
Background Turkesterone is a naturally occurring ecdysteroid found in certain plants and insects. With a chemical structure like testosterone, it has been purported to have an anabolic effect despite the lack of human data. Thus, this investigation aimed to determine whether four weeks of supplement...
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Taylor & Francis Group
2025-12-01
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| Series: | Journal of the International Society of Sports Nutrition |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/15502783.2025.2550140 |
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| _version_ | 1849224602574651392 |
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| author | Antonio Crisanti Tobin Silver Lia Jiannine Jose Antonio |
| author_facet | Antonio Crisanti Tobin Silver Lia Jiannine Jose Antonio |
| author_sort | Antonio Crisanti |
| collection | DOAJ |
| description | Background Turkesterone is a naturally occurring ecdysteroid found in certain plants and insects. With a chemical structure like testosterone, it has been purported to have an anabolic effect despite the lack of human data. Thus, this investigation aimed to determine whether four weeks of supplementing with a turkesterone-containing product affected body composition, handgrip strength, mood, and sleep quality in healthy, young, university male and female participants.Materials and methods Twenty-four participants (12 male and 12 female; mean ± SD: age 22 ± 5; height 170.4 ± 8.6 cm; body mass 71.3 ± 20.1 kg) volunteered for this investigation. Participants were randomly assigned to a treatment or placebo group in a double-blind fashion. They were pre-tested for body composition (Inbody270), handgrip strength, Profile of Mood States (POMS), and sleep quality (Pittsburgh Sleep Quality Index or PSQI). Then, they supplemented daily for four weeks with either the treatment (i.e. one capsule daily of Turk Builder®) or placebo (i.e. one capsule daily of cellulose). Participants were instructed not to change their dietary or exercise habits. An unpaired t-test was used to compare the delta scores of the treatment vs. placebo.Results There were no significant pretest differences for any of the measures between the groups. Moreover, there were no significant differences in the delta score between groups for any of the assessments (i.e. body composition, handgrip, POMS, and PSQI).All data are expressed as the mean ± standard deviation. Legend: BM – body mass, FFM – fat-free mass, FM – fat mass, HG – handgrip, PSQI – Pittsburgh Sleep Quality Index, TBW – total body water, TMDS – total mood disturbance score. There were no significant differences between groups for the delta score.Conclusions Based on a limited sample size as well as short treatment duration, there is no evidence that this over-the-counter dietary supplement affects body composition, handgrip strength, POMS, or PSQI. |
| format | Article |
| id | doaj-art-8ba1bae8accb44348eded77eda39d96c |
| institution | Kabale University |
| issn | 1550-2783 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of the International Society of Sports Nutrition |
| spelling | doaj-art-8ba1bae8accb44348eded77eda39d96c2025-08-25T07:43:02ZengTaylor & Francis GroupJournal of the International Society of Sports Nutrition1550-27832025-12-0122sup210.1080/15502783.2025.2550140The effects of an ecdysteroid supplement on indices of physical and mental performanceAntonio Crisanti0Tobin Silver1Lia Jiannine2Jose Antonio3Nova Southeastern University, Exercise and Sport Science, Davie, FL, USANova Southeastern University, Exercise and Sport Science, Davie, FL, USANova Southeastern University, Exercise and Sport Science, Davie, FL, USANova Southeastern University, Exercise and Sport Science, Davie, FL, USABackground Turkesterone is a naturally occurring ecdysteroid found in certain plants and insects. With a chemical structure like testosterone, it has been purported to have an anabolic effect despite the lack of human data. Thus, this investigation aimed to determine whether four weeks of supplementing with a turkesterone-containing product affected body composition, handgrip strength, mood, and sleep quality in healthy, young, university male and female participants.Materials and methods Twenty-four participants (12 male and 12 female; mean ± SD: age 22 ± 5; height 170.4 ± 8.6 cm; body mass 71.3 ± 20.1 kg) volunteered for this investigation. Participants were randomly assigned to a treatment or placebo group in a double-blind fashion. They were pre-tested for body composition (Inbody270), handgrip strength, Profile of Mood States (POMS), and sleep quality (Pittsburgh Sleep Quality Index or PSQI). Then, they supplemented daily for four weeks with either the treatment (i.e. one capsule daily of Turk Builder®) or placebo (i.e. one capsule daily of cellulose). Participants were instructed not to change their dietary or exercise habits. An unpaired t-test was used to compare the delta scores of the treatment vs. placebo.Results There were no significant pretest differences for any of the measures between the groups. Moreover, there were no significant differences in the delta score between groups for any of the assessments (i.e. body composition, handgrip, POMS, and PSQI).All data are expressed as the mean ± standard deviation. Legend: BM – body mass, FFM – fat-free mass, FM – fat mass, HG – handgrip, PSQI – Pittsburgh Sleep Quality Index, TBW – total body water, TMDS – total mood disturbance score. There were no significant differences between groups for the delta score.Conclusions Based on a limited sample size as well as short treatment duration, there is no evidence that this over-the-counter dietary supplement affects body composition, handgrip strength, POMS, or PSQI.https://www.tandfonline.com/doi/10.1080/15502783.2025.2550140Dietary supplementmoodsleepstrength |
| spellingShingle | Antonio Crisanti Tobin Silver Lia Jiannine Jose Antonio The effects of an ecdysteroid supplement on indices of physical and mental performance Journal of the International Society of Sports Nutrition Dietary supplement mood sleep strength |
| title | The effects of an ecdysteroid supplement on indices of physical and mental performance |
| title_full | The effects of an ecdysteroid supplement on indices of physical and mental performance |
| title_fullStr | The effects of an ecdysteroid supplement on indices of physical and mental performance |
| title_full_unstemmed | The effects of an ecdysteroid supplement on indices of physical and mental performance |
| title_short | The effects of an ecdysteroid supplement on indices of physical and mental performance |
| title_sort | effects of an ecdysteroid supplement on indices of physical and mental performance |
| topic | Dietary supplement mood sleep strength |
| url | https://www.tandfonline.com/doi/10.1080/15502783.2025.2550140 |
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