Freewheel Running
Objective: Determine the effects of 6 weeks of voluntary freewheel running on learned helplessness behaviors, dorsal raphe nucleus serotonin neuron activity during uncontrollable stress, and basal expression of 5-HT1A autoreceptor mRNA
This is a Freewheel Running protocol using rat as the model organism. The procedure involves 6 procedural steps, 2 equipment items. Extracted from a 2003 paper published in Journal of Neuroscience.
Model and subjects
rat • Not specified • unknown • Not specified • Not specified
Study window
~6 week study window
Core workflow
Freewheel running intervention • Uncontrollable tail shock exposure • Shuttle box escape test
Primary readouts
- Shuttle box escape deficit (learned helplessness behavior)
- Exaggerated conditioned fear expression
- Tail shock-induced c-Fos/5-HT double-positive neurons in rostral-mid dorsal raphe nucleus
- Basal 5-HT1A inhibitory autoreceptor mRNA expression in rostral-mid dorsal raphe nucleus
Key equipment and reagents
Use this page as an execution guide, then fall back to the source paper whenever you need exact exclusions, dosing details, or assay-specific caveats.
Confirm first
- Verify the animal model, intervention setup, and collection timepoints against the source paper.
- Check that every direct vendor link matches the exact specification your lab plans to run.
Use the page like this
- Work through the protocol steps in order and use the inline vendor chips only when you need to source or verify an item.
- Jump to Experimental Context for readouts, data shape, and analysis flow before planning downstream analysis.
Protocol Steps
Start here. The step list is optimized for running the experiment, with direct vendor links available inline when you need to source a cited item.
Freewheel running intervention
Rats undergo 6 weeks of voluntary freewheel running as the exercise intervention condition
Note: This is the primary intervention being tested against sedentary control conditions
View evidence from paper
“The current study determined the effects of 6 weeks of voluntary freewheel running on LH behaviors”
Uncontrollable tail shock exposure
Rats are exposed to uncontrollable tail shock to induce learned helplessness and measure stress-induced dorsal raphe serotonin neuron activity
Note: This stressor is used to assess whether freewheel running prevents learned helplessness behaviors
View evidence from paper
“Freewheel running prevented the shuttle box escape deficit and the exaggerated conditioned fear that is induced by uncontrollable tail shock”
Shuttle box escape test
Measure escape responding and learned helplessness behavior using shuttle box apparatus
Note: Primary behavioral outcome measure for learned helplessness
View evidence from paper
“Freewheel running prevented the shuttle box escape deficit and the exaggerated conditioned fear”
Conditioned fear assessment
Measure exaggerated conditioned fear responses as an indicator of learned helplessness
Note: Secondary behavioral outcome measure
View evidence from paper
“Freewheel running prevented the shuttle box escape deficit and the exaggerated conditioned fear that is induced by uncontrollable tail shock”
Double c-Fos/5-HT immunohistochemistry
Perform double immunohistochemistry to identify and quantify tail shock-induced activity of serotonin neurons in the rostral-mid dorsal raphe nucleus
Note: Measures neural activity of 5-HT neurons in response to uncontrollable stress
View evidence from paper
“Double c-Fos/5-HT immunohistochemistry revealed that physical activity attenuated tail shock-induced activity of 5-HT neurons in the rostral–mid DRN”
5-HT1A autoreceptor mRNA expression analysis
Measure basal expression of 5-HT1A inhibitory autoreceptor mRNA in the rostral-mid dorsal raphe nucleus
Note: Assesses potential neurochemical mechanisms underlying the protective effects of freewheel running
View evidence from paper
“Six weeks of freewheel running also resulted in a basal increase in 5-HT1A inhibitory autoreceptor mRNA in the rostral–mid DRN”