Clinical trial NCT05682430: Speed-based and Mechanical Work Considered HIIT for Football Referees
Official title: Effects of Speed-based and Mechanical Work Considered HIIT on Physical and Physiological Performance of Chinese Elite Female Referees in Fitness Tests
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: NA
Conditions: Physical Fitness
Keywords: high speed interval running
mechanical work
Lead sponsor: Universiti Putra Malaysia
Sponsor class: OTHER
First posted: 2023-01-12
Enrollment: 44
Sex: FEMALE
Minimum age (years): 23
Maximum age (years): 45
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: FACTORIAL
Intervention model description: In this experiment, the experimental groups conduct the speed-based HIIT with mechanical work. In contrast, the control group take heart rate based HIIT.
Primary purpose: BASIC_SCIENCE

Brief summary: Majority of the existing studies on the high intensity training of referees are heart rate-based prescription. It is probably the most commonly measured physiological marker used to control or measure exercise intensity in the field.Indeed, speed-based intensity training is more acute than heart rate-based training on the intensity of physical work performed above v/pVO2max. This study the setting of exercise intensity reference the ending velocity of the 30-15 intermittent fitness test.

Detailed description: This study was carried out during the 10 weeks of before the seminar which conducted before the season. The assessments were carried out pre and post training intervention in the before and after week of the intervention, it includes 30-15 intermittent fitness test(VIFT),dynamic Yo-Yo intermittent recovery test, 40m repeat speed ability test, change direction test and cooper test.The experimental group(EG) take 10 weeks Speed-based (VIFT) HIIT protocol performed on each Wednesday and Saturday, 60 min for each session. One EG with mechanical work combined in the HIIT exercises, and another EG is not. The control group during the study performed on the same occasion heart rate-based HIIT.

The TL was assessed using the 0-10-point rating perceived exertion (RPE) scale according to the procedures. With the aim to obtain more detailed information especially the muscle strain, during each occasion (i.e., training session or match) the referees should provide differentiated RPE (dRPE) for respiratory (RPEres) and leg muscle (RPEmus) exertion perception.

Eligibility criteria: Inclusion Criteria:

* the female referees who register as reserve national degree and above for 2022 and 2023.

Exclusion Criteria:

* Injured
* Any reason can not complete all the required training sessions.

Primary outcomes:
measure: Physical performance in fitness tests
timeFrame: 3 days before the intervention
measure: Physical performance in fitness tests
timeFrame: 3 days before the intervention, just 7min before the dynamic yo-yo test
measure: Physical performance in fitness tests
timeFrame: 3 days before the intervention, just 5min before the 40m repeat speed test
measure: Physiological performance in the fitness tests
timeFrame: 3days before the intervention
Secondary outcomes:
measure: Physical performance in fitness tests
timeFrame: 3 days after the 12 weeks intervention
measure: Physical performance in fitness tests
timeFrame: 3 days after the 12 weeks intervention, 7min before the dynamic yo-yo test
measure: Physical performance in fitness tests
timeFrame: 3 days after the 12 weeks intervention, 5min before the 40m repeat speed test
measure: Physiological performance in the fitness tests
timeFrame: 3 days after the 12 weeks intervention
Other outcomes:
measure: Training load
timeFrame: 12 weeks,during each high intensity training
measure: Physical performance in fitness tests
timeFrame: Saturday of the fourth week
measure: Physiological performance in fitness tests
timeFrame: Saturday of the fourth week
Locations:
city: Qingdao
country: China
facility: Lingling ZHANG
state: Shandong
Study officials:
affiliation: University Principal Investigator
name: Lingling ZHANG
role: PRINCIPAL_INVESTIGATOR
References:
citation: Buchheit M, Laursen PB. High-intensity interval training, solutions to the programming puzzle: Part I: cardiopulmonary emphasis. Sports Med. 2013 May;43(5):313-38. doi: 10.1007/s40279-013-0029-x.
citation: Buchheit M, Laursen PB. High-intensity interval training, solutions to the programming puzzle. Part II: anaerobic energy, neuromuscular load and practical applications. Sports Med. 2013 Oct;43(10):927-54. doi: 10.1007/s40279-013-0066-5.
citation: Billat LV. Interval training for performance: a scientific and empirical practice. Special recommendations for middle- and long-distance running. Part II: anaerobic interval training. Sports Med. 2001 Feb;31(2):75-90. doi: 10.2165/00007256-200131020-00001.
citation: Krustrup P, Bangsbo J. Physiological demands of top-class soccer refereeing in relation to physical capacity: effect of intense intermittent exercise training. J Sports Sci. 2001 Nov;19(11):881-91. doi: 10.1080/026404101753113831.