Seite - 149 - in Intelligent Environments 2019 - Workshop Proceedings of the 15th International Conference on Intelligent Environments

Fig 3. The ratio from the average duration between motion between lifting. The time when the maximum ratio was pointed by a blue arrow. If “1” is scored for more than 3 consecutive times and also includes more than 1.23, it was highlighted by a blue box. 3.2 Comparison of the feeling of assistance between the strength of coil springs RMS of quadriceps matched the answer from the questionnaire by the subject and RMS got lower as the strength of the coil spring was raised stronger. On the other hand, for the RMS of gluteus maximus, the ranking RMS was lowest in the other of low, high and medium. [Table 4] Table 4. RMS for the Quadriceps muscle matched the result of the feedback from the subject. As the strength of the coil spring is increased, the RMS has decreased accordingly. However, for the gluteus maximus, it was in the order of low, high, medium. The subject felt the most assistance when the level of assistance was the highest (404.5 N) followed by medium (224 N), low (150.9 N) and no assistance. [Table5] T.Nakazawaetal. /Advancementof IoH/IoT“Assist Suits” toSupportWorkplaces 149