TY - JOUR
T1 - Whey protein supplementation does not accelerate recovery from a single bout of eccentric exercise
AU - Hilkens, Luuk
AU - De Bock, Jolien
AU - Kretzers, Joris
AU - Kardinaal, Alwine F. M.
AU - Floris-Vollenbroek, Esther G.
AU - Scholtens, Petra A. M. J.
AU - Horstmanc, Astrid M. H.
AU - van Loon, Luc J. C.
AU - Van Dijk, Jan-Willem
N1 - Funding Information:
This study was part of the EAT2MOVE project and supported by a grant from the Province of Gelderland, the Netherlands, project E2Msprint25. LH, JDB, and JK declare that they have no conflict of interest. LJCvL, and JWvD have received research grants, consulting fees, and/or speaking honoraria from FrieslandCampina. LJCvL has received research grants, consulting fees, and speaking honoraria from Pepsico/Gatorade. AFMK, EGF-V, and PAMJS are employees at NIZO food research. AMHH is an employee at FrieslandCampina.
Publisher Copyright:
© 2020 Informa UK Limited, trading as Taylor & Francis Group.
PY - 2021/2/1
Y1 - 2021/2/1
N2 - The current double blind, randomized, placebo-controlled trial with two parallel groups aimed to assess the impact of whey protein supplementation on recovery of muscle function and muscle soreness following eccentric exercise. During a 9-day period, forty recreationally active males received twice daily supplementation with either whey protein (PRO; 60 g/day) or an iso-energetic amount of carbohydrate (CON). Muscle function and soreness were assessed before, and 0, 3, 24, 48, and 72 h after performing 100 drop jumps. Recovery of isometric maximal voluntary contraction (MVC) did not significantly differ between groups (timextreatment,P= 0.56). In contrast, the recovery of isokinetic MVC at 90 degrees center dot s(-1)was faster in CON as opposed to PRO (timextreatment interaction,P= 0.044). Recovery of isokinetic MVC at 180 degrees center dot s(-1)was also faster in CON as opposed to PRO (timextreatment interaction,P= 0.011). Recovery of countermovement jump performance did not differ between groups (timextreatment interaction,P= 0.52). Muscle soreness, CK and CRP showed a transient increase over time (P<0.001), with no differences between groups. In conclusion, whey protein supplementation does not accelerate recovery of muscle function or attenuate muscle soreness and inflammation during 3 days of recovery from a single bout of eccentric exercise.
AB - The current double blind, randomized, placebo-controlled trial with two parallel groups aimed to assess the impact of whey protein supplementation on recovery of muscle function and muscle soreness following eccentric exercise. During a 9-day period, forty recreationally active males received twice daily supplementation with either whey protein (PRO; 60 g/day) or an iso-energetic amount of carbohydrate (CON). Muscle function and soreness were assessed before, and 0, 3, 24, 48, and 72 h after performing 100 drop jumps. Recovery of isometric maximal voluntary contraction (MVC) did not significantly differ between groups (timextreatment,P= 0.56). In contrast, the recovery of isokinetic MVC at 90 degrees center dot s(-1)was faster in CON as opposed to PRO (timextreatment interaction,P= 0.044). Recovery of isokinetic MVC at 180 degrees center dot s(-1)was also faster in CON as opposed to PRO (timextreatment interaction,P= 0.011). Recovery of countermovement jump performance did not differ between groups (timextreatment interaction,P= 0.52). Muscle soreness, CK and CRP showed a transient increase over time (P<0.001), with no differences between groups. In conclusion, whey protein supplementation does not accelerate recovery of muscle function or attenuate muscle soreness and inflammation during 3 days of recovery from a single bout of eccentric exercise.
KW - Eccentric exercise
KW - recovery
KW - muscle function
KW - muscle soreness
KW - protein supplementation
KW - carbohydrates
KW - MUSCLE DAMAGE
KW - SKELETAL-MUSCLE
KW - CARBOHYDRATE
KW - RELIABILITY
KW - PERFORMANCE
KW - STRENGTH
KW - SORENESS
KW - FORCE
U2 - 10.1080/02640414.2020.1820184
DO - 10.1080/02640414.2020.1820184
M3 - Article
C2 - 33012216
SN - 0264-0414
VL - 39
SP - 322
EP - 331
JO - Journal of Sports Sciences
JF - Journal of Sports Sciences
IS - 3
ER -