Contextual overview
The findings suggest that functional strength ratios provide a more dynamic and accurate picture of trunk stability than conventional measures. Clinicians should consider movement velocity when assessing muscle quality and core balance in athletes.
Original publication abstract
This 2022 pilot study by Reyes-Ferrada et al. investigated trunk strength ratios and muscle quality in 27 healthy males. The study found that trunk extensors are significantly stronger than flexors, with a conventional ratio of approx. 0.41-0.44. While this ratio remains stable across speeds, functional ratios (eccentric vs. concentric) vary significantly with velocity.
Check the original article for the population, device, protocol and limitations before applying its results to a different configuration.