The goal of this clinical trial is to investigate the effects of resistance training with hydrolyzed collagen ingestion on changes in muscle and tendon adaptation in healthy young men and women. The main questions it aims to answer are: * Does resistance training with hydrolyzed collagen ingestion lead to greater changes in tendon properties than resistance training alone? * Does resistance training with hydrolyzed collagen ingestion lead to greater changes in muscle size than resistance training alone? Participants will be randomly assigned to collagen or placebo groups. Participants will perform resistance training three times per week for 10 weeks and hydrolyzed collagen or maltodextrin will be given to collagen or placebo group respectively immediately before each resistance training session. Also, vitamin C will be given to both groups. Researchers will compare collagen and placebo groups to see if hydrolyzed collagen ingestion with resistance exercise would have beneficial effects on changes in muscle and tendon more than resistance training alone. Therefore, using isokinetic dynamometer and ultrasonography, maximal leg strength, morphological, mechanical, and material properties of the patellar tendon and vastus lateralis muscle size and architecture will be assessed.
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Maximal knee extensor (quadriceps) muscle strength
Timeframe: 12 weeks (10 weeks' intervention plus one week either side for assessments)
Maximal knee flexor (hamstring) muscle strength
Timeframe: 12 weeks (10 weeks' intervention plus one week either side for pre- and post-intervention assessments)
Patellar tendon cross-sectional area
Timeframe: 12 weeks (10 weeks' intervention plus one week either side for pre- and post-intervention assessments)
Patellar tendon stiffness
Timeframe: 12 weeks (10 weeks' intervention plus one week either side for pre- and post-intervention assessments)
Vastus lateralis (VL) muscle size
Timeframe: 12 weeks (10 weeks' intervention plus one week either side for pre- and post-intervention assessments)
Vastus lateralis (VL) muscle fascicle length
Timeframe: 12 weeks (10 weeks' intervention plus one week either side for pre- and post-intervention assessments)
Vastus lateralis (VL) muscle fascicle pennation angle
Timeframe: 12 weeks (10 weeks' intervention plus one week either side for pre- and post-intervention assessments)