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RISS 인기검색어
- 검색키워드
- 주제어 : Bench press machine (검색결과 4 건)
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A Smart Bench Press Machine : Automatic Weight Control Sensitive to User Tiredness
Jihun Kim,Han-jin Jo,Kiyoung Kim,Hae-geun Ji,Jaehyo Kim 국제문화기술진흥원 2019 International Journal of Advanced Culture Technolo Vol.7 No.1
In order to provide a safe free-weight-training environment to people without workout trainers, we suggest a smart bench press machine with an automatic weight control system sensitive to user tiredness. Physical weight plates on the machine are replaced with a hydraulic cylinder as a press load and the cylinder knob is coupled with a step motor to change its tensile force automatically in-between lifting exercises. Three subjects participated to verify the usability of the smart bench press machine. They were asked to lift a 6-RM press load 10 times with 3 different lifting conditions: 1) no assistance, 2) a human assistance, and 3) the automatic weight control. All subjects were not able to complete the 10 sets without assistance due to tiredness, but they finished the full sets under the two assistive conditions. Average lifting speeds under the automatic weight control condition showed the most consistent level. Normalized quasi-tension data based on surface electromyogram signals of both Pectoralis Majors revealed that the subjects maintained the target muscle activation level above 50% but not more than 80% throughout the 10 sets. Therefore, the smart bench press machine is expected to both keep pace with the lifting exercise and reduce risk of injuries due to excessive muscle tensions.
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A Smart Bench Press Machine: Automatic Weight Control Sensitive to User Tiredness
Kim, Jihun,Jo, Han-jin,Kim, Kiyoung,Ji, Hae-geun,Kim, Jaehyo The International Promotion Agency of Culture Tech 2019 International Journal of Advanced Culture Technolo Vol.7 No.1
In order to provide a safe free-weight-training environment to people without workout trainers, we suggest a smart bench press machine with an automatic weight control system sensitive to user tiredness. Physical weight plates on the machine are replaced with a hydraulic cylinder as a press load and the cylinder knob is coupled with a step motor to change its tensile force automatically in-between lifting exercises. Three subjects participated to verify the usability of the smart bench press machine. They were asked to lift a 6-RM press load 10 times with 3 different lifting conditions: 1) no assistance, 2) a human assistance, and 3) the automatic weight control. All subjects were not able to complete the 10 sets without assistance due to tiredness, but they finished the full sets under the two assistive conditions. Average lifting speeds under the automatic weight control condition showed the most consistent level. Normalized quasi-tension data based on surface electromyogram signals of both Pectoralis Majors revealed that the subjects maintained the target muscle activation level above 50% but not more than 80% throughout the 10 sets. Therefore, the smart bench press machine is expected to both keep pace with the lifting exercise and reduce risk of injuries due to excessive muscle tensions.
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A Smart Bench Press Machine: Automatic Weight Control Sensitive to User Tiredness
김지훈,조한진,김기영,지해근,김재효 국제문화기술진흥원 2019 International Journal of Advanced Culture Technolo Vol.7 No.1
In order to provide a safe free-weight-training environment to people without workout trainers, we suggesta smart bench press machine with an automatic weight control system sensitive to user tiredness. Physicalweight plates on the machine are replaced with a hydraulic cylinder as a press load and the cylinder knob iscoupled with a step motor to change its tensile force automatically in-between lifting exercises. Three subjectsparticipated to verify the usability of the smart bench press machine. They were asked to lift a 6-RM press load10 times with 3 different lifting conditions: 1) no assistance, 2) a human assistance, and 3) the automaticweight control. All subjects were not able to complete the 10 sets without assistance due to tiredness, but theyfinished the full sets under the two assistive conditions. Average lifting speeds under the automatic weightcontrol condition showed the most consistent level. Normalized quasi-tension data based on surfaceelectromyogram signals of both Pectoralis Majors revealed that the subjects maintained the target muscleactivation level above 50% but not more than 80% throughout the 10 sets. Therefore, the smart bench pressmachine is expected to both keep pace with the lifting exercise and reduce risk of injuries due to excessivemuscle tensions.
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