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Microbial Contamination of Gym Equipment: Diversity Patterns, Temporal Dynamics, Staphylococcus Hotspots, and
Alexander Martens1, Markus Schauer2, Mohamad Motevalli2
1Institute for Medical Microbiology and Virology, University of Leipzig Medical Center, University of Leipzig, 04103 Leipzig, Germany.
Pathogens (Basel, Switzerland)
|July 28, 2026
Summary
Gym equipment surfaces harbor mostly human skin bacteria, with contamination levels varying by time of day and specific devices. Targeted cleaning interventions are recommended for high-contact equipment and peak contamination periods.
Area of Science:
- Microbiology
- Environmental Health
- Public Health
Background:
- Public fitness facilities are high-contact environments facilitating microbial transfer.
- Temporal dynamics and device-specific contamination patterns are not well understood.
Purpose of the Study:
- To characterize microbial contamination on gym equipment surfaces.
- To investigate temporal dynamics and device-specific contamination patterns.
- To inform targeted hygiene interventions.
Main Methods:
- Observational study of 12 gym devices over five weekdays.
- Collected 180 surface samples (3x daily).
- Used culture-based methods and MALDI-TOF MS for bacterial identification; calculated ecological metrics and contamination profiles.
Main Results:
- Identified 248 bacterial isolates (61 species), predominantly skin-associated (72.2%).
- Sampling time significantly predicted contamination; functional trainer and leg extension had highest risk scores.
- Ab crunch machine and upper body ergometer showed increasing contamination trends.
Conclusions:
- Gym equipment surfaces host dynamic, human-associated microbial communities.
- Contamination patterns vary by device and time, with some devices showing increasing contamination.
- Findings support targeted hygiene interventions for frequently used equipment and peak contamination times.
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