Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Clinical Trials

Clinical Trials

Clinical trials are prospective experimental studies conducted on humans to determine the safety and efficacy of treatments, drugs, diet methods, and medical devices. Using statistics in clinical trials enables researchers to derive reasonable and accurate conclusions from the collected data, allowing them to make wise decisions in uncertain situations. In medical research, statistical methods are crucial for preventing errors and bias.
There are four phases in a clinical trial. A phase one...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Associations Between the Built Environment in GPS-Derived Activity Spaces and Sedentary Behavior, Light Physical Activity, and Moderate-to-Vigorous Physical Activity.

International journal of environmental research and public health·2025

Same author

Parents' food choice for their preschool-aged children: A means-end investigation.

Child: care, health and development·2023

Same author

Correlates of bike share use and its association with weight status at an urban university.

PloS one·2022

Same author

Measuring Physical Activity Regulatory Styles and Identity Among Adults 55 Years or Older.

Journal of aging and health·2022

Same author

Questions to Measure Enjoyment of and Satisfaction With Physical Activity: Are They Appropriate for Use in an Older Population?

Innovation in aging·2022

Same author

Age, Sex, and Race/Ethnicity Associations between Fat Mass and Lean Mass with Bone Mineral Density: NHANES Data.

International journal of environmental research and public health·2021

Same journal

Daily Steps and Life Expectancy: A Life Table Analysis of a Population-Representative Sample.

Journal of physical activity & health·2026

Same journal

Social Determinants of Daily Step Count in Young Adults With and Without Prediabetes and Type 2 Diabetes.

Journal of physical activity & health·2026

Same journal

Sociodemographic Factors and Adolescent Physical Activity: The Mediating Role of Physical Activity-Related Health Competence.

Journal of physical activity & health·2026

Same journal

Economic Evaluation of Self-Administered Dual-Task Training Reducing Falls in Community-Dwelling Older Adults: Cost-Effectiveness Analysis of a Multicenter Randomized Control Trial.

Journal of physical activity & health·2026

Same journal

Environmental Sensory Characteristics of Urban Green Spaces and Their Associations With Green Exercise and Mental Health: Evidence From Türkiye.

Journal of physical activity & health·2026

Same journal

Physical Activity Patterns and Kidney Function Changes Among Hispanic/Latino Adults: The Hispanic Community Health Study/Study of Latinos.

Journal of physical activity & health·2026

See all related articles

Search research articles

Related Experiment Video

Updated: May 29, 2026

Traditional Trail Making Test Modified into Brand-new Assessment Tools: Digital and Walking Trail Making Test

Published on: November 23, 2019

Trails and physical activity: a review.

Heather A Starnes¹, Philip J Troped, David B Klenosky

¹Dept. of Health and Kinesiology, Purdue University, West Lafayette, IN, USA.

Journal of Physical Activity & Health

|September 22, 2011

Summary

This summary is machine-generated.

While trails show economic benefits and factors influencing use, evidence on their direct impact on physical activity is limited. Further research is needed, especially for diverse populations.

More Related Videos

Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity

Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity

Published on: March 7, 2019

Comparative Analysis of Lower Limb Kinematics between the Initial and Terminal Phase of 5km Treadmill Running

Comparative Analysis of Lower Limb Kinematics between the Initial and Terminal Phase of 5km Treadmill Running

Published on: July 17, 2020

Related Experiment Videos

Last Updated: May 29, 2026

Traditional Trail Making Test Modified into Brand-new Assessment Tools: Digital and Walking Trail Making Test

Published on: November 23, 2019

Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity

Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity

Published on: March 7, 2019

Comparative Analysis of Lower Limb Kinematics between the Initial and Terminal Phase of 5km Treadmill Running

Comparative Analysis of Lower Limb Kinematics between the Initial and Terminal Phase of 5km Treadmill Running

Published on: July 17, 2020

Area of Science:

Interdisciplinary research synthesizing public health, leisure sciences, urban planning, and transportation.
Focus on the relationship between trails and physical activity.

Background:

Trails are increasingly recognized for their potential health and economic benefits.
Understanding factors influencing trail use is crucial for promoting physical activity.

Purpose of the Study:

To synthesize existing research on trails and physical activity.
To identify correlates, facilitators, and barriers of trail use.
To evaluate the cost-effectiveness and economic benefits of trails.

Main Methods:

A comprehensive literature search was conducted for studies published between 1980 and 2008.
Included cross-sectional, intervention, correlational, descriptive, and economic studies.
Synthesized findings across diverse research methodologies.

Main Results:

Evidence on trails' positive effects on physical activity was mixed.
Demographic and environmental factors significantly correlate with trail use.
Trails were found to be cost-effective with significant economic benefits.

Conclusions:

Promoting trail use requires consideration of identified factors.
Limited evidence currently supports a direct positive effect of trails on physical activity.
Future research should prioritize diverse populations and evaluate trail impacts on physical activity.