The purpose of this study is to investigate the effects of high-intensity functional training (HIFT) as compared to traditional resistance training (RT) and concurrent training consisting of RT and high-intensity interval training (HIIT) on physical performance metrics, body composition, and mental and physical readiness of tactical personnel.
This study assesses the impact of 8-weeks of high-intensity functional training (HIFT) as compared to traditional resistance training (RT) and concurrent training consisting of RT and high-intensity interval training (HIIT) on various performance outcomes. The main questions the study aims to answer are: * Evaluate the distinct effects of HIFT, RT, and RT plus HIIT over eight weeks on physical performance and body composition measures in tactical men and women. * Determine the distress, training load, and physical readiness associated with each of the three distinct training interventions over eight weeks. Participants will: * Take part in 10-weeks total of study-related activity. * Complete four total sessions of pre and post-testing sessions, which include body composition, maximal oxygen uptake testing (VO2max), upper and lower body maximal strength, and lower body power. * Be randomly assigned to an exercise training intervention.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
NONE
Enrollment
44
Participants assigned to this group will undergo 8 weeks of high-intensity functional training.
Participants assigned to this group will undergo 8 weeks of traditional strength and hypertrophy training.
Participants assigned to this group will undergo 8 weeks of traditional strength and hypertrophy training followed by high-intensity interval aerobic training.
University of South Carolina Sport Science Lab
Columbia, South Carolina, United States
Changes in body composition body fat percentage.
Body fat percentage via air-displacement
Time frame: Baseline and Week 10
Changes in body composition fat-free mass.
Fat-free mass via air-displacement plethysmography.
Time frame: Baseline and Week 10
Changes in body composition dry fat-free mass.
Dry fat-free mass via air-displacement plethysmography and bio-electrical impedance.
Time frame: Baseline and Week 10
Changes in upper body strength.
Upper body strength assessed by 1 repetition maximum bench press.
Time frame: Baseline and week 10
Changes in lower body strength.
Lower body strength assessed by isometric mid-thigh pulls on bilateral force plates.
Time frame: Baseline and week 10
Changes in maximal oxygen consumption.
Changes in VO2max measured by maximal graded exercise test with indirect calorimetry.
Time frame: Baseline and week 10
Changes in ventilatory threshold.
Changes in ventilatory threshold measured by maximal graded exercise test with indirect calorimetry.
Time frame: Baseline and week 10
Changes in velocity at VO2 max.
Assessed by maximal graded exercise test with indirect calorimetry.
Time frame: Baseline and week 10
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Internal training load between groups.
Assessed by heart rate chest strap using Edwards training impulse calculation.
Time frame: Every training session over the 8-week intervention period will be included in this calculation.
Changes in training distress
Overall training distress and subscales including depressed moods, vigor, physical signs and symptoms, sleep disturbances, perceived stress, and general fatigue using the multicomponent training distress scale, scaled 0 - 110 with higher scores indicating more distress.
Time frame: Baseline, once per week for the 8 training weeks.
Changes in anaerobic power.
Measured by countermovement jump through bilateral force plates.
Time frame: Baseline, once per week for the 8 training weeks.