Research
Energy balance
All groups showed significant improvements in cardiorespiratory fitness, upper body strength, lower body strength, and 2000m rowing performance.
Concurrent training can lead to significant improvements in fitness and strength regardless of protein supplementation.
StrongSupportsmedium confidence
There were similar but significant improvements in cardiorespiratory fitness (PLA +7.5%; WPI +3.9%; WPC +6.9%), upper body strength (PLA +5.5%; WPI +5.1%; WPC +6.7%), lower body strength (PLA +13.6%; WPI +9.4%; WPC +14.1%) and 2000m rowing performance (PLA -2.5%; WPI -2.3%; WPC -2.3%) in all groups, P<0.05.
Why this rating
Based on study design from abstract.
Source
Whey protein isolate or concentrate combined with concurrent training does not augment performance, cardiorespiratory fitness, or strength adaptations
Scott C. Forbes et al. · The Journal of Sports Medicine and Physical Fitness · 2020
DOI 10.23736/s0022-4707.20.10314-1
rct · n=31Cited 8×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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