code: def cmu_mocap_49_balance(data_set='cmu_mocap'):
      
      train_motions = ['18', '19']
      test_motions = ['20']
      data = cmu_mocap('49', train_motions, test_motions, sample_every=4, data_set=data_set)
      data['info'] = "One legged balancing motions from CMU data base subject 49. As used in Alvarez, Luengo and Lawrence at AISTATS 2009. It consists of " + data['info']
      return data
docs: Load CMU subject 49's one legged balancing motion that was used by Alvarez, Luengo and Lawrence at AISTATS 2009.