title: Probiotic Streptococcus thermophilus FP4 and Bifidobacterium breve BR03 Supplementation Attenuates Performance and Range-of-Motion Decrements Following Muscle Damaging Exercise.
abstract: Probiotics have immunomodulatory effects. However, little is known about the potential benefit of probiotics on the inflammation subsequent to strenuous exercise. In a double-blind, randomized, placebo controlled, crossover design separated by a 21-day washout, 15 healthy resistance-trained men ingested an encapsulated probioticStreptococcus(S.)thermophilusFP4 andBifidobacterium(B.)breveBR03 at 5 bn live cells (AFU) concentration each, or a placebo, daily for 3 weeks prior to muscle-damaging exercise (ClinicalTrials.gov NCT02520583). Isometric strength, muscle soreness, range of motion and girth, and blood interleukin-6 (IL-6) and creatine kinase (CK) concentrations were measured from pre- to 72 h post-exercise. Statistical analysis was via mixed models and magnitude-based inference to the standardized difference. Probiotic supplementation resulted in an overall decrease in circulating IL-6, which was sustained to 48 h post-exercise. In addition, probiotic supplementation likely enhanced isometric average peak torque production at 24 to 72 h into the recovery period following exercise (probiotic-placebo point effect ±90% CI: 24 h, 11% ± 7%; 48 h, 12% ± 18%; 72 h, 8% ± 8%). Probiotics also likely moderately increased resting arm angle at 24 h (2.4% ± 2.0%) and 48 h (1.9% ± 1.9%) following exercise, but effects on soreness and flexed arm angle and CK were unclear. These data suggest that dietary supplementation with probiotic strainsS. thermophilusFP4 andB. breveBR03 attenuates performance decrements and muscle tension in the days following muscle-damaging exercise.
authors.affiliation: Increnovo LLC, 2138 E Lafayette Pl, Milwaukee, WI 53202, USA. ralf.jaeger@increnovo.com.
authors.forename: Ralf
authors.initials: R
authors.lastname: Jäger
authors.affiliation: Increnovo LLC, 2138 E Lafayette Pl, Milwaukee, WI 53202, USA. martin.purpura@increnovo.com.
authors.forename: Martin
authors.initials: M
authors.lastname: Purpura
authors.affiliation: Exercise & Sport Performance Laboratory, Department of Kinesiology, Texas Christian University, P.O. Box 297730, Fort Worth, TX 76129, USA. j.stone@tcu.edu.
authors.forename: Jason D
authors.initials: JD
authors.lastname: Stone
authors.affiliation: Exercise & Sport Performance Laboratory, Department of Kinesiology, Texas Christian University, P.O. Box 297730, Fort Worth, TX 76129, USA. s.m.turner@tcu.edu.
authors.forename: Stephanie M
authors.initials: SM
authors.lastname: Turner
authors.affiliation: Exercise & Sport Performance Laboratory, Department of Kinesiology, Texas Christian University, P.O. Box 297730, Fort Worth, TX 76129, USA. a.j.anzalone@tcu.edu.
authors.forename: Anthony J
authors.initials: AJ
authors.lastname: Anzalone
authors.affiliation: Exercise & Sport Performance Laboratory, Department of Kinesiology, Texas Christian University, P.O. Box 297730, Fort Worth, TX 76129, USA. m.eimerbrink@tcu.edu.
authors.forename: Micah J
authors.initials: MJ
authors.lastname: Eimerbrink
authors.affiliation: R & D Bioloab, Via E. Mattei 3, Novara 28100, Italy. m.pane@mofinalce.it.
authors.forename: Marco
authors.initials: M
authors.lastname: Pane
authors.affiliation: R & D Bioloab, Via E. Mattei 3, Novara 28100, Italy. a.amoruso@mofinalce.it.
authors.forename: Angela
authors.initials: A
authors.lastname: Amoruso
authors.affiliation: School of Sport and Exercise, Massey University, 63 Wallace St., Wellington 6021, New Zealand. d.s.rowlands@massey.ac.nz.
authors.forename: David S
authors.initials: DS
authors.lastname: Rowlands
authors.affiliation: Exercise & Sport Performance Laboratory, Department of Kinesiology, Texas Christian University, P.O. Box 297730, Fort Worth, TX 76129, USA. jonathan.oliver@tcu.edu.
authors.forename: Jonathan M
authors.initials: JM
authors.lastname: Oliver
mesh_terms: D000328:Adult; D054874:Athletic Performance; D000069984:Bifidobacterium breve; D019587:Dietary Supplements; D004311:Double-Blind Method; D006801:Humans; D008297:Male; D018482:Muscle, Skeletal; D063806:Myalgia / Q000517:prevention & control*; D019936:Probiotics; D016059:Range of Motion, Articular; D055070:Resistance Training; D048249:Streptococcus thermophilus; D055815:Young Adult
keywords: cytokines; eccentric exercise; inflammation; isokinetic