Validity and Reliability of a Standardized Protocol for Assessing the One Repetition Maximum Performance During Overhead Pressing Exercises

The study investigated the concurrent validity and reliability of the load-velocity relationship to predict the one-repetition maximum (1RM) of the power clean from the knee (PCK), high pull from the knee (HPK), and mid-thigh clean pull (MTCP). For each exercise, 12 participants performed two 1RM sessions tests and two sessions to measure the barbell’s load-velocity relationship at 30, 45, 60, 75, and 90% of 1RM. The velocity recorded at each load was used to establish the linear regression equation and, consequently, to predict 1RM value. A low validity between the 1RM direct test and predicted 1RM was observed for PCK (typical error [TE]=3.96 to 4.50 kg, coefficient of variation [CV]=4.68 to 5.27%, effect size [ES]=-0.76 to -0.58, Bland-Altman bias [BAB]=9.83 to 11.19 kg), HPK (TE=4.58 to 5.82 kg, CV=6.44 to 8.14%, ES=-0.40 to -0.39, BAB=3.52 to 4.17 kg), and MTCP (TE=6.33 to 8.08 kg, CV=4.78 to 6.16%, ES=-0.29 to -0.19, BAB=3.98 to 6.17 kg). Adequate reliability was observed for the 1RM direct test and for the predicted 1RM. However, based on Bland-Altman limits of agreement, lower measurement errors were obtained for the 1RM direct test in comparison to the predicted 1RM for all the exercises. In conclusion, the load-velocity relationship was not able to predict 1RM values with high accuracy in the PCK, HPK, and MTCP. Moreover, the 1RM direct test was the most reliable for PCK, HPK and MTCP.

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Does Sex Impact the Differences and Relationships in the One Repetition Maximum Performance Across Weightlifting Overhead Pressing Exercises?

The Journal of Strength and Conditioning Research ◽

10.1519/jsc.0000000000003746 ◽

2020 ◽

Vol Publish Ahead of Print ◽

Author(s):

Marcos A. Soriano ◽

Amador García-Ramos ◽

Jessica Calderbank ◽

Pedro J. Marín ◽

Pilar Sainz de Baranda ◽

...

Keyword(s):

Maximum Performance ◽

Repetition Maximum ◽

The One

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Validity and Reliability of the Load-Velocity Relationship to Predict the One-Repetition Maximum in Deadlift

The Journal of Strength and Conditioning Research ◽

10.1519/jsc.0000000000002369 ◽

2018 ◽

Vol 32 (3) ◽

pp. 681-689 ◽

Cited By ~ 15

Author(s):

Ludwig Ruf ◽

Clément Chéry ◽

Kristie-Lee Taylor

Keyword(s):

Validity And Reliability ◽

Repetition Maximum ◽

Velocity Relationship ◽

The One

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Validity and Reliability of a Smartphone Accelerometer for Measuring Lift Velocity in Bench-Press Exercises

Sustainability ◽

10.3390/su12062312 ◽

2020 ◽

Vol 12 (6) ◽

pp. 2312

Author(s):

Javier Peláez Barrajón ◽

Alejandro F. San Juan

Keyword(s):

Bench Press ◽

Basic Program ◽

Validity And Reliability ◽

Training Experience ◽

Mean Velocity ◽

Repetition Maximum ◽

Linear Transducer ◽

The Mean ◽

One Year ◽

The One

The aim of this study was to determine the validity and reliability that a smartphone accelerometer (ACC) used by a mobile basic program (MBP) can provide to measure the mean velocity of a bench-press (BP) lift. Ten volunteers participated in the study (age 23.1 ± 2.5 years; mean ± SD). They had more than one year of resistance training experience in BP exercise. All performed three attempts with different loads: 70%, 90%, and 100% of the estimated value of the one-repetition maximum (1RM). In each repetition, the mean velocity was measured by a validated linear transducer and the ACC. The smartphone accelerometer used by the mobile basic program showed no significant differences between the mean velocities at 70% 1RM lifts (ACC = 0.52 ± 0.11 m/s; transducer = 0.54 ± 0.09 m/s, p > 0.05). However, significant differences were found in the mean velocities for 90% 1RM (ACC = 0.46 ± 0.09 m/s; transducer = 0.31 ± 0.03 m/s, p < 0.001), and 100% 1RM (ACC = 0.33 ± 0.21 m/s; transducer = 0.16 ± 0.04 m/s, p < 0.05). The accelerometer is sensitive enough to measure different lift velocities, but the algorithm must be correctly calibrated.

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Is there a relationship between the overhead press and split jerk maximum performance? Influence of sex

International Journal of Sports Science & Coaching ◽

10.1177/17479541211020452 ◽

2021 ◽

pp. 174795412110204

Author(s):

Marcos A Soriano ◽

G Gregory Haff ◽

Paul Comfort ◽

Francisco J Amaro-Gahete ◽

Antonio Torres-González ◽

...

Keyword(s):

Confidence Intervals ◽

Body Mass ◽

Upper Limb ◽

High Reliability ◽

Intraclass Correlation ◽

Correlation Coefficients ◽

Training Experience ◽

Maximum Performance ◽

Repetition Maximum ◽

Intraclass Correlation Coefficients

The aims of this study were to (I) determine the differences and relationship between the overhead press and split jerk performance in athletes involved in weightlifting training, and (II) explore the magnitude of these differences in one-repetition maximum (1RM) performances between sexes. Sixty-one men (age: 30.4 ± 6.7 years; height: 1.8 ± 0.5 m; body mass 82.5 ± 8.5 kg; weightlifting training experience: 3.7 ± 3.5 yrs) and 21 women (age: 29.5 ± 5.2 yrs; height: 1.7 ± 0.5 m; body mass: 62.6 ± 5.7 kg; weightlifting training experience: 3.0 ± 1.5 yrs) participated. The 1RM performance of the overhead press and split jerk were assessed for all participants, with the overhead press assessed on two occasions to determine between-session reliability. The intraclass correlation coefficients (ICC) and 95% confidence intervals showed a high reliability for the overhead press ICC = 0.98 (0.97 – 0.99). A very strong correlation and significant differences were found between the overhead press and split jerk 1RM performances for all participants (r = 0.90 [0.93 – 0.85], 60.2 ± 18.3 kg, 95.7 ± 29.3 kg, p ≤ 0.001). Men demonstrated stronger correlations between the overhead press and split jerk 1RM performances (r = 0.83 [0.73-0.90], p ≤ 0.001) compared with women (r = 0.56 [0.17-0.80], p = 0.008). These results provide evidence that 1RM performance of the overhead press and split jerk performance are highly related, highlighting the importance of upper-limb strength in the split jerk maximum performance.

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The one repetition maximum test and the sit-to-stand test in the assessment of a specific pulmonary rehabilitation program on peripheral muscle strength in COPD patients

International Journal of Chronic Obstructive Pulmonary Disease ◽

10.2147/copd.s91176 ◽

2015 ◽

pp. 2423 ◽

Cited By ~ 28

Author(s):

Andrea Zanini ◽

Marina Aiello ◽

Francesca Cherubino ◽

Elisabetta Zampogna ◽

Alfredo Chetta ◽

...

Keyword(s):

Muscle Strength ◽

Pulmonary Rehabilitation ◽

Rehabilitation Program ◽

Repetition Maximum ◽

Sit To Stand ◽

Peripheral Muscle ◽

Maximum Test ◽

Copd Patients ◽

The One ◽

Pulmonary Rehabilitation Program

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A Study of Environmental awareness among the students at Shaqra University and its relationship with sustainable development: دراسة مستوى الوعي البيئي لدى طالبات جامعة شقراء وعلاقته بالتنمية المستدامة

Journal of agricultural, environmental and veterinary sciences - مجلة العلوم الزراعية والبيئية والبيطرية ◽

10.26389/ajsrp.c110120 ◽

2020 ◽

Vol 4 (2) ◽

Author(s):

Laila Hanafy Kamel

Keyword(s):

Sustainable Development ◽

Statistical Significance ◽

Environmental Awareness ◽

Control Sample ◽

Environmental Information ◽

Female Students ◽

Validity And Reliability ◽

Fourth Level ◽

The One ◽

Level Of Significance

The current study focused on measuring environmental awareness and its relationship to the variables of specialization and age, on the one hand, and its relationship to sustainable development among Shaqra University students in Shaqra in the second semester of the year 2018/2019 where the research community included three colleges, namely the College of Education, the College of Sciences and Humanities and the College of Applied Medical Sciences, In order to achieve the research objectives, the choice was made on the scale of environmental awareness that was used by (Al- Badrani, 2004), citing (Al- Dakhil, 2000), which consists of two axes, the first axis concerns environmental information and the second axis is concerned with the attitude towards the environment and adjustments were made to be ready for implementation as was the Confirmed the validity and reliability of the scale appropriate ways. The sample of the study was 110 female students, who were selected from the control sample Fourth level female students, the results of the research showed that the level of environmental awareness among the three college students is lower than the default test, 70% of the degree of the questionnaire, where the average awareness of the students reached 58.32%. The results also showed an inverse relationship between environmental information and behavior towards the environment. Statistical significance according to the speciality or age variable at the level of indication α= 0.05 The research also showed a strong correlation between environmental awareness and the information of female students on sustainable development of the environment at the level of significance α= 0. 01 and a number of recommendations were made that aim to raise the level of environmental awareness for students and activate the diffusion of green culture to protect the environment.

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