Effects of Pork Protein on Recovery Following Simulated Fireground Activity

Conditions

• Blood Biomarkers
• Cognition
• Exercise Recovery
• Muscle Damage
• Physical Performance Parameters
• Stress

Eligibility Criteria

Sex

ALL

Age

18 Years - 60 Years

Healthy Volunteers

Accepted

Interventions

• Pork-Based Protein Ready-to-Eat Meals — OTHER
  Pork-Based Protein Ready-to-Eat Meals: Participants will consume study-provided ready-to-eat meals (RTEM) in which lean pork serves as the primary protein source. Meals are designed to provide approximately 700 - 800 kcal, 80 g carbohydrate, 50 g protein, and 30 g fat per meal, with total daily protein intake targeted at approximately 1.4-2.0 g/kg/day. Pork-based meals will be provided during the approximately 3-day experimental period surrounding the simulated fire ground test and subsequent recovery assessments. Meals are designed to match the energy and macronutrient content of the plant-based protein condition.
• Plant-Based Protein Ready-to-Eat Meals — OTHER
  Plant-Based Protein Ready-to-Eat Meals: Participants will consume study-provided ready-to-eat meals (RTEM) in which plant-based foods serve as the primary protein source. Plant protein sources may include soy, tempeh, tofu, and other soy-based foods. Meals are designed to provide approximately 700 - 800 kcal, 80 g carbohydrate, 50 g protein, and 30 g fat per meal, with total daily protein intake targeted at approximately 1.4-2.0 g/kg/day. Plant-based meals will be provided during the approximately 3-day experimental period surrounding the simulated fire ground test and subsequent recovery assessments and will be matched as closely as feasible to the pork-based condition for energy and macronutrient content.
• Carbohydrate-Focused Lower-Protein Ready-to-Eat Meals — OTHER
  Carbohydrate-Focused Lower-Protein Ready-to-Eat Meals: Participants will consume study-provided carbohydrate-focused ready-to-eat meals (RTEM) designed to provide a lower total daily protein intake of approximately 0.8 g/kg/day. This condition serves as the lower-protein dietary control for comparison with the pork-based and plant-based higher-protein conditions. Meals will be provided during the approximately 3-day experimental period surrounding the simulated fire ground test and subsequent recovery assessments.

Study Details

The goal of this clinical trial is to learn whether consuming pork-based protein before and after physically demanding simulated firefighting activities can improve recovery, physical performance, and cognitive performance in healthy adult firefighters. The study will also compare pork-based protein meals with plant-based protein meals and a carbohydrate-focused control condition. The main questions this study aims to answer are: Does consuming pork-based protein reduce changes in markers of muscle damage, physiological stress, and muscle soreness following a simulated fire ground test? Does consuming pork-based protein help maintain or improve physical and cognitive performance during recovery compared with plant-based protein and a carbohydrate-focused control condition? Researchers will compare three ready-to-eat meal conditions: pork-based protein, plant-based protein, and a carbohydrate-focused control condition. Each participant will complete all three conditions in a randomized crossover design, with 14 to 21 days between conditions.

Key Dates

First listed

Sep 15, 2026

Start date

Jun 1, 2026

Status verified

Sep 2026

Primary completion

Nov 30, 2026

Completion

Dec 31, 2026

Study Design

Enrollment

20 participants (estimated)

Allocation

RANDOMIZED

Intervention model

CROSSOVER

Primary purpose

TREATMENT

Arms

• Experimental: Pork-Based Protein Ready-to-Eat Meals
  Participants will consume pork-based protein ready-to-eat meals (RTEM) during this experimental condition. Meals will provide approximately 700.- 800 kcal, 80 g carbohydrate, 50 g protein, and 30 g fat per meal, with lean pork serving as the primary protein source. The dietary intervention is designed to provide a total daily protein intake consistent with study targets. Participants will consume the study-provided meals surrounding the simulated fire ground testing and recovery period, with physiological, cognitive, and physical performance outcomes assessed during recovery.
• Active Comparator: Plant-Based Protein Ready-to-Eat Meals
  Participants will consume plant-based protein ready-to-eat meals (RTEM) during this comparator condition. Meals will be designed to approximate the energy and macronutrient content of the pork-based condition, providing approximately 700-800 kcal, 80 g carbohydrate, 50 g protein, and 30 g fat per meal, with plant-based foods such as soy, tempeh, or tofu as the primary protein sources. Participants will consume the study-provided meals surrounding the simulated fire ground testing and recovery period, with the same physiological, cognitive, and physical performance outcomes assessed.
• Active Comparator: Carbohydrate-Focused Lower-Protein Control
  Participants will consume carbohydrate-focused ready-to-eat meals during the control condition. This condition will provide a lower total daily protein intake of approximately 0.8 g/kg/day and will serve as a dietary control for comparison with the higher-protein pork-based and plant-based conditions. Participants will consume the study-provided meals surrounding the simulated fire ground testing and recovery period, with the same physiological, cognitive, and physical performance outcomes assessed.

Primary Outcome Measure

Change in Testosterone and Cortisol [ Time Frame: Baseline, 24, 48, and 72 hours following the simulated fire ground test ]

Central Contacts

• Drew Edward Gonzalez, PhD
  2107888616
  [email protected]

Locations (2)

Find similar trials in Fort Worth, TX

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