To broaden the frame and achieve an 'X' silhouette, there is a strict hierarchy of exercise effectiveness for the lateral deltoid, where cable movements (offering continuous tension) are superior and should be prioritized, while others such as standard dumbbells are less optimal.

noli's read

On one hand, research confirms that targeting the lateral deltoid is the key to visually broadening the physique, as validated by several strength and conditioning expert analyses. Electromyographic muscle activation studies (such as Coratella et al., 2020) demonstrate that lateral raise variations are the quintessential movements for recruiting this shoulder bundle. On the other hand, the claim of a strict hierarchy of effectiveness based on the equipment used is exaggerated. A recent controlled trial by Moreno et al. (2025) directly compared cable and dumbbell lateral raises: after 8 weeks of training, both methods produced nearly identical deltoid muscle growth (between 3.3% and 4.6%). Although biomechanical theory favors the continuous tension of the cable during the stretch, the biology of muscle growth appears to adapt equivalently to both tools. This ranking therefore relies more on preferences for comfort or theoretical optimization than on measurable differences in physical results.

the sources

No named source held this one up — that absence is part of the verdict.