Kiisa Nishikawa is a Regents' Professor of Biology at Northern Arizona University, For the past 30 years, her laboratory has investigated the contribution of muscle properties to biomechanics and neural control of movement. Investigations in her laboratory range from biophysics of single titin molecules and myofibrils, to physiological studies of intact muscles from wild type and transgenic mice, to development and testing of bio-inspired control algorithms for wearable devices. Recent work includes development of titin-based models for accurate forward prediction of in vivo muscle forces during perturbed locomotion across a range of speeds and gaits in animals and humans.