Three articles:

creatine supplementation in older adults can double the amount of strength gained from resistance training.

Conclusion: Regular resistance training can be recommended as a very suitable non-pharmacological approach to strengthen the body’s antioxidant system, muscle strength and quality of life in older adults. There are no definite findings on the role of creatine on the antioxidant system and quality of life in older adults, but the use of this supplement in addition to RT can double the amount of strength gained from resistance training.

Another fresh article:

The Effects of Creatine Supplementation Combined with Resistance Training on Regional Measures of Muscle Hypertrophy: A Systematic Review with Meta-Analysis

the results suggest that creatine supplementation combined with RT promotes a small increase in the direct measures of skeletal muscle hypertrophy in both the upper and lower body.

Creatine anti-sarcopenic benefits for older adults.

From a skeletal muscle perspective, the combination of creatine monohydrate supplementation and resistance training provides ‘hope’ for older adults as it improves measures of lean mass, regional (limb) muscle thickness, upper- and lower-body muscle strength and functional ability. Further, there is some evidence that creatine (supplementation or habitual diet) provides a ray of ‘hope’ for improving some aspects of cognitive function. The majority of research suggests that creatine is more ‘hype’ than ‘hope’ for improving measures of bone mass in older adults. Creatine monohydrate supplementation provides some anti-sarcopenic benefits for older adults.