The Science Behind the Limitations of Who Can and Who Cannot Dunk a Basketball Based on Their Genetics (Using 11 Participants and Measuring Vertical Increase)
Publication Date : Jul-08-2026
DOI: 10.70251/HYJR2348.44183192
Author(s) :
Volume/Issue :
Abstract :
This study investigated how genetic traits interact with a structured sports science program to determine vertical jump performance and dunking capability in adolescent male athletes. Over 12 weeks, 11 male adolescent athletes ages 14–17 followed a periodized program concentrating on five variables: nutrition, recovery, strength, plyometrics, and jump technique. Performance was measured at five time points (Weeks 0, 3, 6, 9, and 12) across three primary outcomes: standing vertical, approach vertical, and vertical with ball. By Week 12, all 11 participants showed statistically significant improvements across all three measures. Standing vertical increased by a mean of 2.91 inches (SD = 0.70; p < .001; Cohen’s d = 4.15), approach vertical by a mean of 3.73 inches (SD = 0.65; p < .001; d = 5.76), and vertical with ball by a mean of 3.64 inches (SD = 0.81; p < .001; d = 4.49). Effect sizes were very large across all outcomes. Seven of the 11 athletes (64%) successfully executed a regulation dunk by Week 12. Height was strongly associated with dunking success (rpb = 0.84, p = .001), and dunkers were significantly taller than nondunkers (p = .001). These findings show that while neuromuscular performance is highly adaptable through a structured training program, fixed anthropometric factors such as height and standing reach ultimately determine whether training gains are sufficient to clear a 10-foot rim within a fixed timeframe.