Estimation of 1-Repetition Maximum Using a Hydraulic Bench Press Machine Based on User’s Lifting Speed and Load Weight

Yoo, Jinyeol; Kim, Jihun; Hwang, Byunggon; Shim, Gyuseok; Kim, Jaehyo

doi:10.3390/s22020698

Cited by 3 publications

(3 citation statements)

References 10 publications

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“…The exercise weight at which the 1−RM could be estimated from fewer than 10 exercise measurements was identified in a preliminary experiment [ 28 , 29 ]. Guided by the experimenter, the subjects were trained on the posture and method of exercise and familiarized themselves with the exercise using the lowest-weight dumbbell (2kg).…”

Section: Methodsmentioning

confidence: 99%

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Estimation of One-Repetition Maximum, Type, and Repetition of Resistance Band Exercise Using RGB Camera and Inertial Measurement Unit Sensors

Hwang

Shim

Choi

et al. 2023

Sensors

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Resistance bands are widely used nowadays to enhance muscle strength due to their high portability, but the relationship between resistance band workouts and conventional dumbbell weight training is still unclear. Thus, this study suggests a convolutional neural network model that identifies the type of band workout and counts the number of repetitions and a regression model that deduces the band force that corresponds to the one-repetition maximum. Thirty subjects performed five different exercises using resistance bands and dumbbells. Joint movements during each exercise were collected using a camera and an inertial measurement unit. By using different types of input data, several models were created and compared. As a result, the accuracy of the convolutional neural network model using inertial measurement units and joint position is 98.83%. The mean absolute error of the repetition counting algorithm ranges from 0.88 (seated row) to 3.21(overhead triceps extension). Lastly, the values of adjusted r-square for the 5 exercises are 0.8415 (chest press), 0.9202 (shoulder press), 0.8429 (seated row), 0.8778 (biceps curl), and 0.9232 (overhead triceps extension). In conclusion, the model using 10-channel inertial measurement unit data and joint position data has the best accuracy. However, the model needs to improve the inaccuracies resulting from non-linear movements and one-time performance.

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Section: Methodsmentioning

confidence: 99%

“…The parameters of the traditional 1−RM equation are type of exercise, number of repetitions, exercise weight, and exercise speed [ 27 , 28 , 29 ]. To measure parameters, various types of sensors are used.…”

Section: Introductionmentioning

confidence: 99%

Estimation of One-Repetition Maximum, Type, and Repetition of Resistance Band Exercise Using RGB Camera and Inertial Measurement Unit Sensors

Hwang

Shim

Choi

et al. 2023

Sensors

Self Cite

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“…It's proven as a reliable way to test muscular strength. To test the 1RM, following these steps(16) :  Warm up: Using a weight that allows you to easily perform 6-10 repetitions, it was approximately 50% of your 1RM. Take a rest for a duration of 1 to 5 minutes.…”

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confidence: 99%

Restricted Blood Flow versus Resisted Training in Elderly Women with Sarcopenia

2024

The Egyptian Journal of Hospital Medicine

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Background: A decrease in muscle mass, muscle strength, and muscle function is a hallmark of sarcopenia. The best training method for treating and preventing sarcopenia is resistance training (RT). Traditional high -load resistance training (CRT), which is recommended by the American College of Sports Medicine is difficult for older people with sarcopenia. Low-load RT with blood flow restriction (LRT-BFR), a novel training approach, has the potential to increase muscle development and strength similarly to CRT but with less effort.Objective: This study aimed to determine which type of exercises (high load resisted exercises or LRT-BFR) obtaining the best improvement in elderly patients with sarcopenia. Subjects and methods: A total of forty older women (65-75 years old) diagnosed with sarcopenia through medical or radiological means were randomly assigned to one of two matched groups: The study group (I) received low load RT combined with restricted blood flow training (RBF), while the study group (II) received high load resistance exercise, for 18 sessions every other day, each session for 20 min for each group. All patients were evaluated with one-repetition maximum strength [1RM] test, SARC-F questionnaire and six-minute walk test pre and post-treatment. Results: A statistically significant difference was seen between the two groups, with a p-value of 0.001. This suggested that patients in study group I reported a greater improvement in muscle power compared to those in study group II. Conclusion:This study showed that six weeks of low load RT combined with restricted blood flow training (RBF) revealed to be an effective method for treating sarcopenia in older female patients.

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Comparing the efficacy of low-load resistance exercise combined with blood flow restriction versus conventional-load resistance exercise in Chinese community-dwelling older people with sarcopenic obesity: a study protocol for a randomised controlled trial

Zhuang,

Shi,

Liu

et al. 2023

BMC Geriatr

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Introduction Sarcopenic obesity (SO) is characterised by decreased muscle mass, diminished muscle strength and/or reduced physical performance and a high percentage of body fat (PBF). Conventional-load resistance exercise (CRE) may be difficult for older people with SO owing to their declining physical functions. Low-load resistance exercise (LRE) combined with blood flow restriction (BFR; LRE-BFR) is a viable alternative to CRE for improving muscle mass and strength and potential exercise mode for managing SO. This study has two objectives: (1) to comprehensively evaluate the efficacy of CRE and LRE-BFR in improving body composition, muscle strength, physical performance, haematological parameters, cardiovascular disease (CVD) risk factors and quality of life and (2) to compare the efficacy of CRE and LRE-BFR and explore their potential mechanisms. Methods and analysis This work is a 12-week assessor-blinded randomised clinical trial that will be conducted thrice a week. Sarcopenia will be defined using the Asian Working Group for Sarcopenia 2019, and obesity will be determined using the criteria developed by the World Health Organization. Community-dwelling older people aged ≥ 65 years will be screened as the participants using inclusion and exclusion criteria. A total of 33 participants will be randomised into a CRE group (n = 11), an LRE-BFR group (n = 11) and a control group that will be given only health education (n = 11). The primary outcomes will be knee extensor strength and PBF, and the secondary outcomes will be body composition, anthropometric measurements, muscle strength of upper limbs, physical performance, haematological parameters, CVD risk factors and quality of life. The outcomes will be measured at the baseline (week 0), end of the intervention (week 12) and follow up (week 24). All the collected data will be analysed following the intention-to-treat principle. Ethics and dissemination The Ethics Research Committee has approved this study (approval No. CMEC-2022-KT-51). Changes or developments in this study will be reported at www.chictr.org.cn. Trial registration ChiCTR2300067296 (3 January 2023).

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Estimation of 1-Repetition Maximum Using a Hydraulic Bench Press Machine Based on User’s Lifting Speed and Load Weight

Cited by 3 publications

References 10 publications

Estimation of One-Repetition Maximum, Type, and Repetition of Resistance Band Exercise Using RGB Camera and Inertial Measurement Unit Sensors

Estimation of One-Repetition Maximum, Type, and Repetition of Resistance Band Exercise Using RGB Camera and Inertial Measurement Unit Sensors

Restricted Blood Flow versus Resisted Training in Elderly Women with Sarcopenia

Comparing the efficacy of low-load resistance exercise combined with blood flow restriction versus conventional-load resistance exercise in Chinese community-dwelling older people with sarcopenic obesity: a study protocol for a randomised controlled trial

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