An observational study in Hydration Status, sponsored by PepsiCo Global R&D. Completed at 1 site in United States. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-09-12.
Sponsored by PepsiCo Global R&D · Observational
Physically demanding occupations (PDO) require high levels of energy expenditure, mental acuity, and technical skills. Sometimes this work is performed in extreme environments during hot/humid summer months. Previous research shows that dehydration and heat stress can increase risk of heat-related illness, reduced cognitive function, and work capacity. While this impact of physically demanding work in extreme environmental conditions is often studied in firefighters, military personnel, and athletes, and even agricultural workers, manufacturing and warehouse workers ("the industrial athlete") are underrepresented in the literature.
The purpose of the study is to examine the impact hydration status of the industrial athlete (i.e., frontline manufacturing and warehouse workers at PepsiCo facilities) prior to, during, and after their shift over a typical work week has on work performance.
Note: Recruitment is limited to PepsiCo Frontline Employees Only. Do not contact study official for enrollment.
PepsiCo Global R&D is the lead sponsor of 101 studies on the registry; 7 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Frontline manufacturing and warehouse workers at Orlando PBNA Bottling Facility
Exclusion Criteria:
PepsiCo Frontline Workers
Acute Urine Specific Gravity
USG digital pen refractometer (au)
Time frame: Post-shift USG compared to pre-shift USG (8-12 hours from baseline) on consecutive test day 1-4 over calendar week.
Chronic Urine Specific Gravity
Digital pen refractometer (au)
Time frame: pre- and post- 8-12 hour shift USG on the last test day compared to pre- and post-8-12 hour shift USGs at baseline. Over 4 consecutive test days during a calendar week.
Urine Color
1=most dilute to 7= least dilute
Time frame: 15 minutes pre- 9-12 hour shift and 15 minutes post- 8-12 hour shift, consecutive test day 1-4 over a calendar week.
Body Weight
(kg)
Time frame: 15 minute pre- 8-12 hour shift on the first test day
Sweat Loss
(mL) monitored using the Epicore Connected Hydration device
Time frame: over the course of an 8-12 hour shift, consecutive test day 2-4 over a calendar week.
Sweat Rate
(mL/hr) monitored using the Epicore Connected Hydration device
Time frame: over the course of an 8-12 hour shift, consecutive test day 2-4 over a calendar week.
Sodium Concentrations
(g/L) monitored using the Epicore Connected Hydration device
Time frame: over the course of an 8-12 hour shift, consecutive test day 2-4 over a calendar week.
Sodium Loss
(g) monitored using the Epicore Connected Hydration device
Time frame: over the course of an 8-12 hour shift, consecutive test day 2-4 over a calendar week.
Fluid Intake
(g) pre-shift bottle weight before and after filled with water compared to pre- and post-refill bottle weight.
Time frame: Each time water bottle is refilled over 8-12 hour shift, consecutive test day 1-4 over a calendar week.
Measurment of physical activity and movement (Accelerometry)
Assessed using the LifeBooster Senz devices. Device measures frequency and severity of movements and posture.
Time frame: over the course of an 8-12 hour shift, consecutive test day 2-4 over a calendar week.
work-to-rest ratio
Assessed using the LifeBooster Senz devices. Device measures frequency and severity of movements and posture.
Time frame: over the course of an 8-12 hour shift, consecutive test day 2-4 over a calendar week.
Mental and Physical Energy and Fatigue
Visual Analog Scale (VAS): 6 questions to describe capacity for physical activity anchored from No to Strongest Feelings and 6 questions describe capacity for mental activity anchored from No to Strongest Feelings.
Time frame: 30 minutes pre- and 30 minutes post- 8-12 hour shift on consecutive test day 1-4, over a calendar week
Thirst
Visual Analog Scale- 6 questions: 4 questions are anchored from not at all or none to very, and 2 questions are anchored from pleasant to unpleasant.
Time frame: 30 minutes pre- and 30 minutes post- 8-12 hour shift on consecutive test day 1-4, over a calendar week
Prior Night Sleep Quality
Pittsburgh Sleep Quality Index (PSQI). Measures sleep quality through seven areas: subjective sleep quality, sleep latency, sleep duration, habitual sleep efficiency, sleep disturbances, use of sleep medication, and daytime dysfunction over the last month. Score of the PSQI ranges from 0 to 3, with 3 indicating the greatest dysfunction or disturbance. The seven component scores are then summed to obtain a global PSQI score, which ranges from 0 to 21. Higher scores indicate poorer sleep quality, with a score greater than 5 suggesting significant sleep difficulties
Time frame: 30 minutes pre- 8-12 hour shift on consecutive test day 1-4, over a calendar week
Plan to share: No
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This study is completed, as verified in Sep 2025. You cannot join it, but the record below documents what was studied.
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PepsiCo Global R&D