title: The Impact of Chocolate Goat's and Cow's Milk on Postresistance Exercise Endocrine Responses and Isometric Mid-Thigh Pull Performance.
abstract: The present investigation examined the effects of chocolate cow's and goat's milk on endocrine responses and isometric mid-thigh pull performance post back squat exercise. Twelve college-aged males volunteered to participate and reported to the lab on four occasions. The first visit included anthropometric measurement, one-repetition back squat (1RM), and familiarization with the isometric mid-thigh pull assessment (IMTP). During the subsequent three visits, five sets of eight repetitions of the back squat exercise at 80% of 1RM were performed. For these trials, the participants performed an IMTP and gave a saliva sample prior to, immediately after, 1 hr and 2 hr post exercise. After exercise, a treatment of low-fat chocolate goat's milk (355 ml, 225 kcal), low-fat chocolate cow's milk (355 ml, 225 kcal), or control (water 355 ml, 0 kcal) was given in a counterbalanced order. Saliva samples were analyzed for testosterone, cortisol, and dehydroepiandrosterone (DHEA). Cortisol and DHEA hormone were unaffected by exercise; however, testosterone values did increase significantly post exercise. For IMTP, there was a significant main effect for time (F = 8.41, p = .007) but no treatment or interactions effects. N changes were noted post supplementation for cortisol or DHEA, but testosterone was found to be significantly reduced in both diary treatments compared to control (F = 4.27, p = .022). Based upon these data, it appears that a single treatment of chocolate goat's or cow's milk results in similar endocrine alterations but both fail to enhance postexercise isometric strength following resistance exercise.
authors.affiliation: a School of Kinesiology , University of Louisiana at Lafayette , Lafayette , Louisiana , USA.
authors.forename: David
authors.initials: D
authors.lastname: Bellar
authors.affiliation: a School of Kinesiology , University of Louisiana at Lafayette , Lafayette , Louisiana , USA.
authors.forename: Nina R
authors.initials: NR
authors.lastname: LeBlanc
authors.affiliation: a School of Kinesiology , University of Louisiana at Lafayette , Lafayette , Louisiana , USA.
authors.forename: Kellie
authors.initials: K
authors.lastname: Murphy
authors.affiliation: a School of Kinesiology , University of Louisiana at Lafayette , Lafayette , Louisiana , USA.
authors.forename: Kaitlyn M
authors.initials: KM
authors.lastname: Moody
authors.affiliation: a School of Kinesiology , University of Louisiana at Lafayette , Lafayette , Louisiana , USA.
authors.forename: Gina
authors.initials: G
authors.lastname: Buquet
mesh_terms: D000328:Adult; D000818:Animals; D002417:Cattle; D000069956:Chocolate; D003687:Dehydroepiandrosterone / Q000378:metabolism; D004041:Dietary Fats / Q000008:administration & dosage / Q000032:analysis; D004311:Double-Blind Method; D004703:Endocrine System / Q000378:metabolism*; D002149:Energy Intake; D006041:Goats; D006801:Humans; D006854:Hydrocortisone / Q000378:metabolism; D008297:Male; D008892:Milk / Q000737:chemistry*; D009753:Nutritive Value; D055070:Resistance Training; D012463:Saliva / Q000737:chemistry; D013739:Testosterone / Q000378:metabolism; D013848:Thigh / Q000502:physiology*; D055815:Young Adult
chemical_list: D004041:Dietary Fats; D013739:Testosterone; D003687:Dehydroepiandrosterone; D006854:Hydrocortisone
keywords: androgen; goat's milk; postexercise nutrition; testosterone