Although no study has examined this exact strap system, strong scientific evidence supports the effectiveness of cable-based abdominal exercises (like cable crunches) for increasing abdominal muscle activation and hypertrophy under load conditions. EMG research consistently shows that cable resistance performs equal to or better than traditional floor crunches, especially when high external load is applied (>40 % of 1‑RM).
For example, a 2009 study measuring EMG activity during crunches with external loads (20–100 % 1‑RM) found that heavier loads caused significantly higher abdominal activation, suggesting greater stimulus for strength and muscle development.
Study source:
EMG activation of abdominal muscles in the crunch exercise performed with different external loads (2009)
