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The Relationship Between Partial and Full Range of Motion Deadlift 1-Repetition Maximum: A Technical Note
Brad Gillingham1, Alan Bishop2, Grant K Higa3
1Athletics Department, Southwest Minnesota State University, Marshall, Minnesota.
Journal of Strength and Conditioning Research
|February 2, 2023
Summary
Full range of motion (FROM) and partial range of motion (PROM) deadlifts (DL) are comparable in resistance training. The PROM 1RM DL can be accurately estimated using the FROM 1RM DL, suggesting interchangeability in training programs.
Area of Science:
- Sports Science
- Strength and Conditioning
Background:
- Full range of motion (FROM) and partial range of motion (PROM) deadlifts (DL) are common in resistance training (RT) and competitive strength sports.
- Understanding the relationship between FROM and PROM 1-repetition maximum (1RM) DL is crucial for program design.
Purpose of the Study:
- To examine the relationship between FROM 1RM DL and PROM 1RM DL.
- To determine if PROM 1RM DL can be accurately estimated from FROM 1RM DL.
Main Methods:
- Eighteen collegiate wrestlers performed both FROM and PROM 1RM DL assessments.
- PROM DLs started with the barbell approximately 2.54 cm above the patella.
- Regression analysis and Pearson's correlation coefficient were used to analyze the data.
Main Results:
- PROM 1RM DL (226.0 ± 40.6 kg) was significantly greater than FROM 1RM DL (191.7 ± 37.2 kg).
- A strong positive correlation (r = 0.85) was found between PROM and FROM 1RM DL.
- FROM 1RM DL significantly predicted PROM 1RM DL (R = 0.85, R² = 0.73).
Conclusions:
- PROM and FROM deadlifts may be used interchangeably in resistance training programs.
- FROM 1RM DL provides an accurate prediction of PROM 1RM DL, simplifying strength assessments.
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