Abstract
We aimed to study the feasibility of velocity-based training (VBT) to
individualize load and velocity loss (VL) during unilateral bench press (UBP) in
breast cancer survivors, as well as to analyze possible asymmetries between
their operated and non-operated limbs. Twelve post-surgical breast cancer
survivors performed progressive UBP assessments with each arm up to
one-repetition maximum (1RM) to determine individual load–velocity profiles.
Mean propulsive velocity and mean velocity were modelled against%1RM using
second-order polynomial regressions. In separate sessions, participants
performed two sets per arm at 60–80% 1RM until reaching 40% VL. Repetition
counts were compared between limbs. Strong associations were observed between
velocity metrics and%1RM on both the operated and non-operated sides
(R
2≥0.92). Differences in velocity at matched relative
loads were trivial (≤ 0.01 m/s, p≥0.448). The number of repetitions
performed until reaching the VL threshold did not significantly differ between
limbs (≤ 3 repetitions, p≥0.072). VBT is a feasible and effective method
for individualized load and volume prescription during unilateral resistance
training in breast cancer survivors. Load–velocity profiles and fatigue
responses were symmetrical between operated and non-operated limbs, supporting
the integration of VBT into rehabilitation and return-to-function programs in
this population.
Keywords
strength training - bar velocity - intensity - imbalance - asymmetry
