Related Experiment Video
Updated: May 1, 2026

08:16
Utility of Dissociated Intrinsic Hand Muscle Atrophy in the Diagnosis of Amyotrophic Lateral Sclerosis
Published on: March 4, 2014
33.4K
Physical activity and amyotrophic lateral sclerosis: a European population-based case-control study
Elisabetta Pupillo1, Paolo Messina, Giorgia Giussani
1Neurological Diseases Laboratory, Institute of Hospitalization and Scientific Care-Mario Negri Institute, Milan, Italy.
Annals of Neurology
|April 8, 2014
Summary
Regular physical activity, including job-related exercise and organized sports, is not a risk factor for amyotrophic lateral sclerosis (ALS). Engaging in physical activity may offer protection against developing ALS.
Area of Science:
- Neurology
- Epidemiology
- Public Health
Background:
- Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease.
- The role of physical activity as a potential risk or protective factor for ALS remains unclear.
Purpose of the Study:
- To investigate the association between physical activity and the risk of developing amyotrophic lateral sclerosis (ALS).
Main Methods:
- A case-control study involving 652 ALS patients and 1,166 population controls across European registries.
- Data collected via direct interviews on occupational and leisure physical activities, quantified using metabolic equivalents (METs).
- Conditional logistic regression models were used to calculate adjusted odds ratios (Adj ORs) and 95% confidence intervals (CIs).
Main Results:
- Overall physical activity showed an association with reduced odds of ALS (Adj OR=0.65).
- Both work-related physical activity (Adj OR=0.56) and organized sports (Adj OR=0.49) were linked to lower ALS risk.
- Higher cumulative physical activity (MET scores) demonstrated a significant inverse correlation with ALS risk (Adj OR=0.34 for highest exposure).
Conclusions:
- Physical activity is not identified as a risk factor for amyotrophic lateral sclerosis (ALS).
- Findings suggest that physical activity may exert a protective effect against the development of ALS.
Related Concept Videos
Cross-bridge Cycle
108.8K
As muscle contracts, the overlap between the thin and thick filaments increases, decreasing the length of the sarcomere—the contractile unit of the muscle—using energy in the form of ATP. At the molecular level, this is a cyclic, multistep process that involves binding and hydrolysis of ATP, and movement of actin by myosin.
108.8K
Parkinson's Disease: Overview
2.2K
Neurodegenerative disorders are progressive diseases that cause irreversible damage and loss to neurons in specific brain areas. Examples of these disorders include Parkinson's disease, Alzheimer's disease, Multiple Sclerosis (MS), and Amyotrophic Lateral Sclerosis (ALS). These disorders share characteristics such as proteinopathies, selective neuronal vulnerability, and a complex interplay between genetic and environmental factors. The primary therapeutic goal for these conditions is...
2.2K
Parkinson Disease ll: Pathophysiology
28
Parkinson disease (PD) is a progressive neurodegenerative disorder primarily affecting movement, with additional non-motor features. Its pathophysiology involves complex interactions among genetic susceptibility, environmental exposures, and cellular dysfunction, including dopaminergic neuron loss, protein aggregation, and mitochondrial impairment.Selective NeurodegenerationA key feature is the degeneration of dopaminergic neurons in the substantia nigra pars compacta, leading to reduced...
28
Parkinson Disease l: Introduction
28
Parkinson’s disease is a chronic, progressive neurodegenerative disorder that primarily affects movement. It is characterized by motor symptoms such as resting tremors, muscle rigidity, bradykinesia (slowness of movement), and postural instability. Patients may notice hand tremors at rest, stiffness during movement, or a shuffling gait. In addition to motor features, non-motor symptoms include sleep disturbances, mood and behavioral changes, constipation, and cognitive impairment, all of...
28

