Related Experiment Video
Updated: Feb 11, 2026

Manual Restraint and Common Compound Administration Routes in Mice and Rats
Published on: September 26, 2012
Influence of age on lifting capacity among manual materials handlers
N Girish1, Iqbal Rauf2, Khanzode Vivek2
1Department of Physiotherapy, School of Allied Health Sciences, Manipal University, India.
Background:
Recommended weight limit for manual materials handlers has to be decided based on the individual characteristics of the person and age is one of the major variable affecting maximal lifting capacity. But there is limited information on pattern of change in lifting capacity with age.
Objective:
To determine the influence of age on the maximum acceptable weight of lift among manual materials handlers.
Methods:
Two hundred and seventeen male construction workers were grouped into four age quotas- 19-28, 29-38, 39-48 and 49-58 years. Lifting capacity was determined using progressive isoinertial lifting evaluation, adopting semi-squat technique of lifting at two levels: waist and shoulder.
Results:
A statistically significant increase in the maximum acceptable weight was observed from first to second age group followed by a gradual decline. The percentage of decline from second to third age group was 11.89% and 14.34% and from third to fourth age group was 5.60% and 19.90% for waist and shoulder level respectively.
Conclusion:
Pattern of change in lifting capacity with age among manual materials handlers has been investigated in this study. Lifting capacity was found to be the greatest in 29-38 year age group, therefore prescribing recommended weight limit uniformly for all the workers may not be the best practice.
More Related Videos
Related Concept Videos
Lift
Lung Capacity
Respiratory Capacities
One key metric is the Inspiratory Capacity (IC), which represents the maximum amount of air that can be inhaled with full effort. IC is calculated by summing the tidal volume and inspiratory reserve volume, typically ranging from 2.4 to 3.6 liters.
The Functional Residual Capacity (FRC) represents the air in the...
Aging
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
Buffers: Buffer Capacity
In the graph, pH is plotted as a function of the number of moles of base (Cb) added to a weak...
Respiratory Volumes and Capacities

