TROLLEY Study - TRansit Opportunities for HeaLth, Livability, Exercise and EquitY (TROLLEY)

The researchers are evaluating longitudinal changes in multiple health, economic, and environmental outcomes over a 3-year COVID recovery period and in the context of a new light rail transit (LRT) line, called the Mid-Coast Trolley, among 465 UC San Diego (UCSD) staff. The primary aim is to evaluate change in objectively measured total and moderate to vigorous physical activity (MVPA), travel mode, and vehicle miles traveled (VMT).

Study Overview

• Status: Active, not recruiting
• Conditions: Physical Activity

• Study Type: Observational
• Enrollment (Actual): 479

Contacts and Locations

• Study Contact: Name: Katie Crist, PhD; Phone Number: 8585344610; Email: kcrist@ucsd.edu

Study Locations

• United States
  • California
    • La Jolla, California, United States, 92093
      • UC San Diego

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: Yes

• Sampling Method: Non-Probability Sample

Study Population

We will study UCSD staff. We will aim to recruit 50% from people of color, and 50% low income (<80% Area Median Income), 50% female, and 50% living within 1 mile of a transit stop that connects to the Mid-Coast Trolley.

Description

Inclusion Criteria:

1. are 18 years of age or older;
2. are a full or part-time employee at UC San Diego
3. Prior to COVID-19, you used to commute to La Jolla at least 2 days per week;
4. have lived in the neighborhood selected for the study for at least one year;
5. are able to walk without human assistance;
6. are comfortable reading and writing in English or Spanish;
7. have a reliable phone where you can be reached;
8. spend most of your time in San Diego County;
9. don't plan on moving in the next year;
10. are able to give informed consent and comply with the protocol;
11. are willing to complete all assessments and wear all devices for 7 days at 3 different time points in the next 2 years.

Exclusion Criteria:

1) pregnant, 2) mental state that would preclude understanding the protocol, 3) medical condition that would affect physical activity, 4) taking part in another physical activity related research study, and 5) live or regularly travel outside of San Diego County.

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Moderate to vigorous physical activity	Minutes	2 years

Secondary Outcome Measures

Outcome Measure	Time Frame
Active commute mode	2 years

Collaborators and Investigators

• Sponsor: University of California, San Diego

Publications and helpful links

General Publications

• Crist K, Benmarhnia T, Frank LD, Song D, Zunshine E, Sallis JF. The TROLLEY Study: assessing travel, health, and equity impacts of a new light rail transit investment during the COVID-19 pandemic. BMC Public Health. 2022 Aug 2;22(1):1475. doi: 10.1186/s12889-022-13834-1.

Helpful Links

• TROLLEY study protocol paper

Study record dates

Study Major Dates

• Study Start (Actual): July 15, 2021
• Primary Completion (Estimated): March 14, 2024
• Study Completion (Estimated): June 14, 2024

Study Registration Dates

• First Submitted: June 17, 2021
• First Submitted That Met QC Criteria: June 17, 2021
• First Posted (Actual): June 25, 2021

Study Record Updates

• Last Update Posted (Actual): July 10, 2023
• Last Update Submitted That Met QC Criteria: July 6, 2023
• Last Verified: July 1, 2023

More Information

Terms related to this study

• Keywords: active travel, equity, commute mode
• Other Study ID Numbers: 78646

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No