scholarly journals High Intensity Functional Training (HIFT) Improves Fitness in Recruit Firefighters

2021 ◽  
Vol 18 (24) ◽  
pp. 13400
Author(s):  
Annmarie Chizewski ◽  
Allyson Box ◽  
Richard M. Kesler ◽  
Steven J. Petruzzello
Keyword(s):  
Job Performance ◽  
High Intensity ◽  
Effective Means ◽  
Cardiovascular Fitness ◽  
Muscular Endurance ◽  
Fitness Program ◽  
Functional Training ◽  
Hotelling's T2 ◽  
Hotelling’S T2 ◽  
Effective Fitness

Background: Firefighting is a strenuous profession requiring adequate levels of fitness for effective job performance. Providing firefighters with a safe and effective fitness program is essential for optimal performance. The purpose of this project was to examine changes in various parameters of physical fitness and firefighter ability following a 7-week high intensity functional training (HIFT) program. Methods: Participants were male firefighter recruits (N = 89; age = 27.1 ± 4.2 years, height = 1.78 ± 0.1 m, BMI = 28.1 ± 4.2) enrolled in a Basic Operations Firefighter Academy. Fitness and firefighting ability (via the Academy Firefighter Challenge) were assessed at Weeks 1 and 7 of the Academy. Results: Significant improvements in both fitness and firefighter ability were seen following the HIFT program. Specifically, fitness (BMI, cardiovascular fitness, muscular endurance) improved significantly [Hotelling’s T2 = 8.98, F(5, 84) = 150.92, p < 0.001, η2p = 0.90]. Firefighter ability also improved significantly [Hotelling’s T2 = 3.95, F(7, 88) = 46.26, p < 0.001, η2p = 0.80]. Conclusions: Following a 7-week Basic Operations Firefighter Academy that included daily HIFT, significant increases in fitness and firefighting ability were observed. These findings suggest that HIFT appears to be an effective means of improving fitness and firefighting ability in recruit firefighters.

scholarly journals Multiple Fitness Improvements Found after 6-Months of High Intensity Functional Training

Sports ◽  
2019 ◽  
Vol 7 (9) ◽  
pp. 203 ◽  
Author(s):  
Sarah J. Cosgrove ◽  
Derek A. Crawford ◽  
Katie M. Heinrich
Keyword(s):  
High Intensity ◽  
Performance Testing ◽  
Program Participation ◽  
Muscular Endurance ◽  
Time Effects ◽  
Functional Training ◽  
Significant Time ◽  
Time Interaction ◽  
Before And After ◽  
Cardiorespiratory Endurance

While short-term high intensity functional training (HIFT) effects have been established, fitness improvements from program participation exceeding 16 weeks are unknown. This study examined the effectiveness of participation in HIFT through CrossFit. During 2013–2014, fitness performance testing was incorporated into an ongoing university CrossFit program. Participants included 45 adults (23 women, 22 men) with 0–27 months of HIFT experience (grouped into 0–6 months and 7+ months). Participants completed three separate days of assessments across 10 fitness domains before and after participating in the program for six months. For each sex, 2 (Time) × 2 (Group) RANOVA were used for each fitness test. For women, significant Time effects were found for four fitness domains (i.e., flexibility, power, muscular endurance, and strength), and a Group × Time interaction for cardiorespiratory endurance, with the 0–6-month group improving more. For men, significant Time effects were found for flexibility, muscular endurance, and strength. These data provide evidence for multiple fitness improvements after six months of CrossFit participation with greater 1.5 mile run time improvement among women with less experience.

scholarly journals The Multimodal Nature of High-Intensity Functional Training: Potential Applications to Improve Sport Performance

Sports ◽  
2019 ◽  
Vol 7 (2) ◽  
pp. 33 ◽  
Author(s):  
Joao Falk Neto ◽  
Michael Kennedy
Keyword(s):  
High Intensity ◽  
Anaerobic Capacity ◽  
Metabolic Stress ◽  
Sport Performance ◽  
Muscular Endurance ◽  
Functional Training ◽  
Training Strategy ◽  
Training Interventions ◽  
Potential Applications ◽  
And Performance

Training for sports performance requires the development of multiple fitness components within the same program. In this context, training strategies that have the potential to concomitantly enhance metabolic and musculoskeletal fitness are of great value for athletes and coaches. The purpose of this manuscript is to review the current studies on high-intensity functional training (HIFT) and to assess how HIFT could be utilized in order to improve sport-specific performance. Studies on untrained and recreationally-active participants have led to positive results on aerobic power and anaerobic capacity, and muscular endurance, while results on muscular strength and power are less clear. Still, HIFT sessions can elicit high levels of metabolic stress and resistance training exercises are prescribed with parameters that can lead to improvements in muscular endurance, hypertrophy, strength, and power. As similar training interventions have been shown to be effective in the athletic population, it is possible that HIFT could be a time-efficient training intervention that can positively impact athletes’ performances. While the potential for improvements in fitness and performance with HIFT is promising, there is a clear need for controlled studies that employ this training strategy in athletes in order to assess its effectiveness in this population.

Extremely low volume, whole-body aerobic–resistance training improves aerobic fitness and muscular endurance in females

2012 ◽  
Vol 37 (6) ◽  
pp. 1124-1131 ◽  
Author(s):  
Gill McRae ◽  
Alexa Payne ◽  
Jason G.E. Zelt ◽  
Trisha D. Scribbans ◽  
Mary E. Jung ◽  
...  
Keyword(s):  
Resistance Training ◽  
Aerobic Fitness ◽  
High Intensity ◽  
Cardiovascular Fitness ◽  
Whole Body ◽  
Muscle Endurance ◽  
Control Group ◽  
Maximal Heart Rate ◽  
Muscular Endurance ◽  
Low Volume

The current study evaluated changes in aerobic fitness and muscular endurance following endurance training and very low volume, whole-body, high-intensity, interval-style aerobic–resistance training. Subjects’ enjoyment and implementation intentions were also examined prior to and following training. Subjects (22 recreationally active females (20.3 ± 1.4 years)) completed 4 weeks of exercise training 4 days per week consisting of either 30 min of endurance treadmill training (~85% maximal heart rate; n = 7) or whole-body aerobic–resistance training involving one set of 8 × 20 s of a single exercise (burpees, jumping jacks, mountain climbers, or squat thrusts) separated by 10 s of rest per session (n = 7). A third group was assigned to a nontraining control group (n = 8). Following training, [Formula: see text]O2peak was increased in both the endurance (~7%) and interval (~8%) groups (p < 0.05), whereas muscle endurance was improved (p < 0.05) in the interval group (leg extensions, +40%; chest presses, +207%; sit-ups, +64%; push-ups, +135%; and back extensions, +75%). Perceived enjoyment of, and intentions to engage in, very low volume, high-intensity, whole-body interval exercise were both increased following training (p < 0.05). No significant changes were observed for any variable in the control (nontraining) group. These data demonstrate that although improvements in cardiovascular fitness are induced by both endurance and extremely low volume interval-style training, whole-body aerobic–resistance training imparted addition benefit in the form of improved skeletal muscle endurance.

Understanding Adherence to High-Intensity Functional Training

2014 ◽  
Vol 46 ◽  
pp. 859
Author(s):  
Katie M. Heinrich ◽  
Sarah J. Stevenson ◽  
Taran Carlisle ◽  
Jacob Frye ◽  
Jennifer Hauser ◽  
...  
Keyword(s):  
High Intensity ◽  
Functional Training

scholarly journals Multivariate Statistical Quality Control Based on Ranked Set Sampling

2017 ◽  
Vol 14 (1) ◽  
pp. 1
Author(s):  
Hakan Eygü ◽  
M. Suphi Özçomak
Keyword(s):  
Control Charts ◽  
Sampling Methods ◽  
Average Run Length ◽  
Ranked Set Sampling ◽  
Multivariate Statistical ◽  
Run Length ◽  
Hotelling's T2 ◽  
Median Ranked Set Sampling ◽  
Hotelling’S T2 ◽  
T2 Control Chart

The sample of the study was formed using simple random sampling, ranked set sampling, extreme ranked set sampling and median ranked set sampling. At the end of this process, the researcher created Hotelling’s T2 control charts, a multivariate statistical process control method. The performances of SRS, RSS, ERSS and MRSS sampling methods were compared to one another using these control charts. A simulation was performed to see the average run-length values for Hotelling’s T2 control charts, and these findings were also used for the comparison of the sampling performances.At the end of the study, the researcher formed a sample using median ranked set sampling and created the Hotelling’s T2 control chart. As a result of this operation, the researcher found that there was an out-of-control signal in the process, while there was no such signal in other sampling methods. When the average run-length values obtained from Hotelling’s T2 control charts were compared, it was seen that a shift in the process was detected by the ranked set sampling earlier, when compared to other sampling methods. This paper it can be said that the methods used are unique to the literature because they are applied to multivariate data.

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