Reducing weight increases postural stability in obese and morbid obese men

Area of Science:

• Biomechanics
• Human Physiology
• Obesity Research

Background:

• Obesity is associated with impaired balance control, increasing fall risk.
• Limited research exists on the quantitative impact of weight loss on postural stability in obese populations.

Purpose of the Study:

• To assess the effect of significant weight loss on balance control in obese and morbidly obese men.
• To determine the relationship between the amount of weight lost and the degree of balance improvement.

Main Methods:

• Longitudinal intervention study involving obese and morbidly obese men undergoing weight loss (diet or bariatric surgery).
• Postural stability measured using force platform analysis of center of foot pressure (CP) parameters.
• Comparison with a normal-weight control group.

Main Results:

• Weight loss averaged 12.3 kg (diet) and 71.3 kg (surgery).
• Significant improvements in postural stability (CP speed and range) were observed post-weight loss, both with and without vision.
• A strong linear correlation was found between the amount of weight loss and improved balance control (R²=0.65, P<0.001).

Conclusions:

• Weight loss demonstrably improves balance control in obese men.
• The extent of balance improvement is directly proportional to the amount of weight lost.
• This improvement may mitigate the elevated fall risk commonly seen in obese individuals.