Dataset Information

Concurrent validity of an isokinetic lift test used for admission to the Swedish Armed Forces.

ABSTRACT: The aim of this study was to assess the concurrent validity of the IsoKai isokinetic lift test peak force (IsoKaiPeak) in comparison to a submaximal 5-10RM deadlift test (5-10RMDL), and to develop an equation for converting the IsoKaiPeak in Newton (N) to an estimated 1RM (1RMest) deadlift load in kilograms (kg). The participants included 28 males and 16 female employees in the Swedish Armed Forces (20-59 years). Each participant conducted the IsoKai lift test, followed by the 5-10RMDL test at one occasion. The Pearson's correlation coefficient, with a 95% confidence interval was calculated to evaluate the validity between the IsoKaiPeak and the 1RMest deadlift load derived from the 5-10RMDL test. Univariate and multivariable linear regressions were used to derive the equation for calculating the 1RMest deadlift load based on the IsoKaiPeak. The IsoKaiPeak showed good- to-excellent correlation with the 1RMest deadlift weight with a correlation coefficient of 0.84 (0.72-0.91) for the total sample, and 0.65 (0.37-0.83) and 0.81 (0.53-0.93) in males and females, respectively. The final equation, 1RMest deadlift weight (kg) = -51.63 + (0.08 x IsoKaiPeak) + (2.28 x BMI), explained 72% (adjusted R2 = 0.72) of the total variance in the 1RMest, and had a standard error of the estimate (SEE) of 16.57 kg. In conclusion, the IsoKai isokinetic lift test could be considered a highly valid measure of maximal dynamic muscular strength in comparison to the 5-10RMDL. The equation can be used to convert the IsoKai lift test (N) results to an 1RMest deadlift load (kg), but with consideration of the relative large SEE.

SUBMITTER: Bohman T

PROVIDER: S-EPMC6219807 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Concurrent validity of an isokinetic lift test used for admission to the Swedish Armed Forces.

Bohman Tony T Tegern Matthias M Halvarsson Alexandra A Broman Lisbet L Larsson Helena H

PloS one 20181106 11

The aim of this study was to assess the concurrent validity of the IsoKai isokinetic lift test peak force (IsoKaiPeak) in comparison to a submaximal 5-10RM deadlift test (5-10RMDL), and to develop an equation for converting the IsoKaiPeak in Newton (N) to an estimated 1RM (1RMest) deadlift load in kilograms (kg). The participants included 28 males and 16 female employees in the Swedish Armed Forces (20-59 years). Each participant conducted the IsoKai lift test, followed by the 5-10RMDL test at o ...[more]

PMID: 30399188

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Project description:IntroductionCardiorespiratory fitness (CRF) testing is routinely performed by most armed and tactical forces around the world as part of their recruitment process for new members or simply as an annual examination of their personnel. A 2-mile run (2MR) test is among the most commonly used. However, as it is performed outdoors, weather, climate, and terrain can influence the results and often limit the maximum performance. Also, this test has been shown to be difficult for individuals because the pacing strategy is self-paced. As such, it does not reflect the real situation on the battlefield, where most activities are externally driven by the environment and the enemy. Therefore, we believe that the 30-15 Intermittent Fitness Test (30-15IFT) may be a suitable tool for measuring CRF and battle readiness of military personnel. Moreover, given the importance of visual attention to military personnel we aim to investigate the differences in visual attention between better and less physically prepared infantry members and its corresponding response to maximal endurance running test.Methods and analysisThis randomized cross-over study using a within-subjects test-retest design will enroll 32 infantry members of the Slovenian Armed Forces. To investigate the reliability and validity of the 30-15IFT test, an incremental treadmill test (TR), a 2MR test, and two identical 30-15IFT will be performed in randomized order. Additionally, participants will be subsequently divided into two groups based on their score on the Army Physical Fitness Test (APFT), whereas differences in visual attention will be assessed by using the d2 test. The primary analysis will assess differences in key physiological outcomes between the different CRF tests (TR vs. 2MR vs. 30-15IFT). In addition, the relative reliability of all dependent variables between two 30-15IFT trials will be estimated by interclass correlation coefficient (ICC), while relationship between maximal oxygen uptake, heart rate and maximal running speed of 30-15IFT, TR and 2MR will be assessed using Pearson's correlation.Ethics and disseminationEthical approval was obtained from the National Medical Ethics Committee (reference number: 0120-495/2021/6). The results of the proposed study will be disseminated through publication in peer-reviewed journals.Clinical trial registration[www.ClinicalTrials.gov], identifier [NCT05218798].

Project description:In low- and middle-income countries (LIMCs), measuring early childhood development (ECD) with standard tests in large scale surveys and evaluations of interventions is difficult and expensive. Multi-dimensional screeners and single-domain tests ('short tests') are frequently used as alternatives. However, their validity in these circumstances is unknown. We examined the feasibility, reliability, and concurrent validity of three multi-dimensional screeners (Ages and Stages Questionnaires (ASQ-3), Denver Developmental Screening Test (Denver-II), Battelle Developmental Inventory screener (BDI-2)) and two single-domain tests (MacArthur-Bates Short-Forms (SFI and SFII), WHO Motor Milestones (WHO-Motor)) in 1,311 children 6-42 months in Bogota, Colombia. The scores were compared with those on the Bayley Scales of Infant and Toddler Development (Bayley-III), taken as the 'gold standard'. The Bayley-III was given at a center by psychologists; whereas the short tests were administered in the home by interviewers, as in a survey setting. Findings indicated good internal validity of all short tests except the ASQ-3. The BDI-2 took long to administer and was expensive, while the single-domain tests were quickest and cheapest and the Denver-II and ASQ-3 were intermediate. Concurrent validity of the multi-dimensional tests' cognitive, language, and fine motor scales with the corresponding Bayley-III scale was low below 19 months. However, it increased with age, becoming moderate-to-high over 30 months. In contrast, gross motor scales' concurrence was high under 19 months and then decreased. Of the single-domain tests, the WHO-Motor had high validity with gross motor under 16 months, and the SFI and SFII expressive scales showed moderate correlations with language under 30 months. Overall, the Denver-II was the most feasible and valid multi-dimensional test and the ASQ-3 performed poorly under 31 months. By domain, gross motor development had the highest concurrence below 19 months, and language above. Predictive validity investigation is needed to further guide the choice of instruments for large scale studies.

Dataset Information

Concurrent validity of an isokinetic lift test used for admission to the Swedish Armed Forces.

Publications

Concurrent validity of an isokinetic lift test used for admission to the Swedish Armed Forces.

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