Akbar's ability to run faster than Vivian could be attributed to a variety of factors, primarily rooted in individual differences such as genetics, physical conditioning, and training. Genetic predispositions play a crucial role in determining one's athletic potential, influencing factors like muscle fiber composition, aerobic capacity, and biomechanics. If Akbar has inherited favorable genetic traits related to speed and endurance, it could contribute to his superior running abilities.

Additionally, the variance in their training regimens and physical conditioning could impact their running performance. Akbar may engage in targeted speed and agility workouts, enhancing his muscle strength, flexibility, and cardiovascular endurance. Consistent and specialized training tailored to running can significantly improve overall performance. On the other hand, Vivian might focus on different aspects of fitness or employ a training approach less conducive to sprinting.

Moreover, individual lifestyle factors such as diet, sleep, and overall health could contribute to the speed difference. Adequate rest and proper nutrition are essential for optimal physical performance. If Akbar maintains a healthier lifestyle, it could positively impact his ability to run faster.

Psychological factors may also come into play. Akbar's mindset, motivation, and mental resilience can influence his performance on the track. A strong mental attitude and focus can provide a competitive edge, affecting speed and endurance during a run.

In conclusion, the difference in running speed between Akbar and Vivian likely stems from a combination of genetic factors, training regimens, lifestyle choices, and psychological aspects. The intricate interplay of these elements creates a unique athletic profile for each individual, contributing to their distinct abilities on the track.