![]() This paper will investigate the validity and reliability of Chester Treadmill Police Walk Test (CTPWT) and Chester Treadmill Police Run Test (CTPRT) in predicting four of the key VO 2 values laid out by Brewer highlighted in Table 1. For this reason, some forces now utilise and alternative fitness test (Chester Step Test, Astrand Cycle Test and Chester Treadmill Walk Test) however, the validity and reliability of the results may be questioned due to the lack of research investigating this. Prior to participation, all officers are required to complete a medical questionnaire to ensure there are no medical contraindications such as musculoskeletal issues which may be aggravated by the twisting and turning associated with the MSFT. However, the validity and reliability of shuttle testing to predict VO 2max have been questioned among specific populations. This 15-m MSFT has also been compared with PST and specialist roles physiological demands and to VO 2max in prior research. These requirements are assessed using a 15-m multi-stage fitness test (MSFT) which has been validated against the 20-m MSFT in an unpublished study. min −1 is necessary, with increasing requirements for specialist roles ( Table 1).To achieve the fitness required for personal safety training (PST), a VO 2 max of at least 35 ml Following the Winsor report and based upon research carried out by Brewer, the College of Policing set out required standards of aerobic fitness for all operational officers ( Table 1). Similar to military personnel and firefighters, police officers are required to attend regular fitness testing to continue in operation. ![]() Although there are noted limitations of submaximal exercise testing such as the reliance upon an accurate heart rate (HR), power output and VO 2 relationship, there are many submaximal protocols which are accepted to be an effective means of assessing cardiovascular fitness. The use of these submaximal exercise tests to predict VO 2max has been widely investigated by researchers. While it is desirable to measure VO 2max using online gas analysis, alternative tests have been developed to allow for the prediction of VO 2max without the use of specialized equipment or ergometry. This measure has been associated with cardiometabolic health, mortality and athletic performance alike. Maximal oxygen consumption (VO 2max) is a commonly used measure of aerobic, or cardiorespiratory, fitness. For officers who may have musculoskeletal issues for whom the twisting and turning associated with MSFT may be potentially injurious, the CTPWT and CTPRT have been shown to be valid and reliable indicators of the aerobic fitness standards required for operational duties.What impact this may have on practice or policy: The CTPWT and CTPRT are both valid and reliable alternatives to the 15m MSFT.A need was therefore identified to validate alternative treadmill fitness tests namely, Chester Treadmill Police Walk and Run Tests.The 15m multi-stage fitness test (MSFT) utilised by constabularies in England and Wales has been validated against the 20m MSFT in an unpublished study, however may not be suitable for officers with musculoskeletal issues.20m shuttle running is a well-established method of assessing aerobic fitness levels.What is already known about this subject:
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