The Effect of Posture on Maximum Grip Strength Measurements

Area of Science:

• Gerontology
• Physical Therapy
• Biomedical Engineering

Background:

• Grip strength is a key indicator of overall health and functional status.
• Accurate grip strength measurement is vital for diagnosing conditions like sarcopenia.
• Current clinical practices may not utilize the optimal posture for grip strength assessment.

Purpose of the Study:

• To compare grip strength values across four different body postures.
• To identify the posture yielding the maximum grip strength.
• To evaluate the impact of posture on grip strength measurements for sarcopenia screening.

Main Methods:

• 764 participants (409 males, 355 females) were included.
• Grip strength was measured in four positions: standing (elbow extended/raised) and sitting (flexed/extended elbow).
• Multiple linear regression analyzed grip strength variations considering age, gender, and BMI.

Main Results:

• Grip strength was significantly higher in the standing, fully extended elbow position for both genders.
• Standing postures generally yielded greater grip strength than sitting postures.
• No significant difference was observed between the two sitting positions.

Conclusions:

• The standing position with a fully extended elbow provides the highest grip strength values.
• Current clinical recommendations for seated grip strength measurement may underestimate true strength.
• Selecting the optimal posture, specifically standing with elbow extended, is recommended for accurate grip strength assessment.