Resistance Training and Hydrolyzed Collagen Supplementation in Middle-aged Adults

"Participants performed 24 lower limb resistance training sessions over under supervision from the principal investigator. Participants were pair-matched, then allocated to hydrolysed collagen (COL) or a calorie-matched beverage comprising maltodextrin and non-caloric sweetener (PLA). Both COL and PLA consumed their respective supplements in conjunction with each resistance training session.~Baseline assessments of strength were used to set initial training loads. An example of weekly training is included below for indicative purposes:~Week 1 protocol:~Day 1:~* Barbell squat, 4 sets @ 90% 10-RM~* Romanian deadlift, 4 sets @ 90% 10-RM~Day 2:~* Hex bar deadlift, 4 sets @ 90% 10-RM~* Dumbbell goblet squat, 4 sets @ 90% 10-RM~Linear progression adjusted weekly loads. If participants completed the prescribed sets and reps, loads increased by 2.5-5 % the following week."