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How about micro-dosing some aerobic cycle work in those interset rest periods? We wrote about this in 2012, suggesting that it might be a way to maximise hypertrophic adaptation. Check out the rationale.
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We thought that active recovery using low-intensity aerobic exercise may have beneficial effects to hypertrophic adaptation, in the following ways.

• Mechanical– optimising muscle temperature to increase elasticity, decrease viscosity and therefore improve mechanical efficiency.
• Metabolic – enhance lactate clearance and rate of energetic repletion.
• Hormonal – greater total anabolic hormone production.
• Neural –temperature mediated improvements in motor unit recruitment, firing frequency, etc.
• The outcome– more mechanical work.

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First to admit, that the idea was hypothetical and whether such adaptations occur is likely dependent on the intensity and duration of the aerobic activity. Your thoughts? I am wondering if anybody has tried something like this or know of related research?

Mohamad,N.I., et al (2012) Brief Review: Maximizing Hypertrophic Adaptation - Possible Contributions of Aerobic Exercise in the Interset Rest Period. Strength and Conditioning Journal: 34(1)8-15