ArticleInternational journal of exercise science2026
Unilateral Posterior-Chain Training as a Perturbation Strategy for Balance Improvements in Middle-Aged Adults.
Article in International journal of exercise science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Postural instability and impairments in dynamic balance are common in aging populations and are often linked to asymmetries between the supportive and non-supportive limbs. This study investigated the effects of a four-week unilateral posterior-chain resistance training program targeting the non-supportive leg on dynamic and static balance measures in middle-aged, recreationally active adults. Twenty-seven participants (ages 40-56) performed Single-Leg Romanian Deadlifts (SLRD) twice weekly, following a progressive overload model. Balance performance was evaluated using the Y Balance Test (YBT) and the Tetrax posturography at three time points: PRE (familiarization), PRE1 (before intervention), and POST (post-intervention). Initial analysis of the supportive versus non-supportive classification showed no statistically significant improvements in either the trained (non-supportive) leg or the supportive one. However, when analyzed based on left versus right leg performance, the results revealed significant improvements in posterolateral reach in both limbs, indicating direction-specific adaptations and potential bilateral transfer effects. Posterolateral reach improved significantly in both the left leg (p = 0.008, η
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