Age Is a Poor Predictor of Maximal Strength in Competitive Powerlifters

Abstract

Age-related declines in muscular strength are well-documented; however, less is known about the long-term trajectories of individuals engaged in consistent high-level resistance training. This study examined the relationship between age and maximal strength in competitive powerlifters with competition records spanning multiple decades. Data were obtained from 61 powerlifters (45 men, 16 women) who participated in events sanctioned by drug-tested federations and had results both before age 40 and after age 60. A total of 3,379 competition entries were analyzed. Changes in absolute and relative strength, as well as in individual lifts (squat, bench press, and deadlift), were assessed using linear regression. Age explained a modest proportion of variance across all metrics (0.4%–15.6%). Among men, significant annual declines were observed in deadlift (−0.33%), relative strength (−0.32%), and squat (−0.17%), with no significant changes in bench press or absolute strength. Among women, relative strength (−0.06%) and squat (−0.11%) showed small but significant declines, while bench press performance increased (+0.27%). The rate and pattern of decline were steeper in men. Additional differences were observed between lifts, with deadlift showing the steepest drop. Compared to non-athletic populations, the observed decline was substantially lower, indicating a protective effect of long-term resistance training. These findings suggest that chronological age alone is a poor predictor of strength decline among well-trained older adults. Moreover, the observed exercise- and gender-specific patterns underscore the need for stratified analyses in aging research. The small number of female participants limited statistical power, highlighting the importance of future studies with larger samples.