Validation and Reliability of a Novel Test of Upper Body Isometric Strength

Bellar, David; Marcus, Lena; Judge, Lawrence W.

doi:10.1515/hukin-2015-0074

Cited by 15 publications

(14 citation statements)

References 15 publications

(18 reference statements)

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“…To our knowledge only one study has investigated the reliability of an isometric pushup in assessing upper-body isometric strength (5). This research showed that an isometric assessment in a push-up position had good within-day reliability (ICC=0.98), with a multiple regression model (r 2 =0.86, p≤0.01) identifying isometric peak force as a significant predictor of one repetition maximum (1RM) bench press (p≤0.01).…”

Section: A C C E P T E Dmentioning

confidence: 93%

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Upper-Body Strength Measures and Pop-Up Performance of Stronger and Weaker Surfers

Parsonage¹,

Secomb

Sheppard

et al. 2020

Journal of Strength and Conditioning Research

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The primary purpose of this study was to investigate the reliability of the isometric push-up (IPU), dynamic push-up (DPU), and force plate pop-up (FP POP) as measures of upper-body isometric and dynamic strength qualities in surfing athletes. Furthermore, the study aimed to compare pop-up performance between stronger and weaker surfers. Eighteen female (n=9) and male (n=9) surfers (age=28.1±6.4 yrs, mass=69.6±10.4 kg, height=172.5±6.7 cm) completed a battery of upper-body strength assessments, of which exhibited high between-day reliability: (IPU, (CV%=4.7, ICC=0.96), DPU (CV%=5.0, ICC=0.90), FP POP (CV%=4.4, ICC=0.90). Participants were subsequently split into stronger (n=9) and weaker (n=9) surfers based on normalized peak force (PF) attained in the IPU. Pop-up performance was measured both in the water and during the FP POP, and was referred to as time to pop (TTP). Significant between group differences were observed for normalized PF during IPU (d=1.59, p<0.01) and DPU (d=0.94 p=0.04). Although not significant, there was a large magnitude difference in FP POP (d=0.80, p=0.08) and FP TTP (d=0.85, p=0.07). Significant correlations were identified between normalized IPU PF and normalized DPU FP (r=0.69, p=0.03) and FP TTP (r=0.73, p=0.02) in the stronger group. The weaker group exhibited a significant inverse correlation between normalized IPU PF and in water TTP (r=-0.77, p<0.01). The results suggest improvements in pop-up performance may be elicited by improving dynamic strength for stronger surfers, whereas pop-up performance in weaker surfers may be elicited by improving maximum strength. The upper-body strength assessments provided a novel insight into strength qualities that are associated with in water performance of surfers (TTP).

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Section: A C C E P T E Dmentioning

confidence: 93%

“…To our knowledge, there is limited research on the measurement of upper-body isometric strength qualities utilizing a push-up and its relationship to sports specific dynamic performance (5).…”

Section: A C C E P T E Dmentioning

confidence: 99%

Upper-Body Strength Measures and Pop-Up Performance of Stronger and Weaker Surfers

Parsonage¹,

Secomb

Sheppard

et al. 2020

Journal of Strength and Conditioning Research

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“…The test was performed three times with 5 min rest between assessments. The validity and reliability of this test have been reported in the literature [ 14 ].…”

Section: Methodsmentioning

confidence: 99%

The effect of 6 days of alpha glycerylphosphorylcholine on isometric strength

Bellar

LeBlanc

Campbell

2015

Journal of the International Society of Sports Nutrition

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BackgroundErgogenic aides are widely used by fitness enthusiasts and athletes to increase performance. Alpha glycerylphosphorylcholine (A-GPC) has demonstrated some initial promise in changing explosive performance. The purpose of the present investigation was to determine if 6 days of supplementation with A-GPC would augment isometric force production compared to a placebo.MethodsThirteen college-aged males (Means ± SD; Age: 21.9 ± 2.2 years, Height: 180.3 ± 7.7 cm, Weight: 87.6 ± 15.6 kg; VO2 max: 40.08 ± 7.23 ml O2*Kg−1*min−1, Body Fat: 17.5 ± 4.6 %) gave written informed consent to participate in the study. The study was a double blind, placebo controlled, cross-over design. The participants reported to the lab for an initial visit where they were familiarized with the isometric mid thigh pull in a custom squat cage on a force platform and upper body isometric test against a high frequency load cell, and baseline measurements were taken for both. The participant then consumed either 600 mg per day of A-GPC or placebo and at the end of 6 days performed isometric mid thigh pulls and an upper body isometric test. A one-week washout period was used before the participants’ baseline was re-measured and crossed over to the other treatment.ResultsThe A-GPC treatment resulted in significantly greater isometric mid thigh pull peak force change from baseline (t = 1.76, p = 0.044) compared with placebo (A-GPC: 98.8. ± 236.9 N vs Placebo: −39.0 ± 170.9 N). For the upper body test the A-GPC treatment trended towards greater change from baseline force production (A-GPC: 50.9 ± 167.2 N Placebo: −14.9 ± 114.9 N) but failed to obtain statistical significance (t = 1.16, p = 0.127).ConclusionsA-GPC is effective at increasing lower body force production after 6 days of supplementation. Sport performance coaches can consider adding A-GPC to the diet of speed and power athletes to enhance muscle performance.

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“…Isometric strength tests are popular assessments that are widely used to assess maximum force-time curve characteristics of the muscular system for the lower [1][2][3] and upper limbs [4][5][6]. This strength testing method has been shown to be an effective approach for monitoring strength training adaptations, especially in well trained athletes who show only subtle changes even after long period of training [7,8], or to assess acute changes in performance during the recovery phase following high-volume resistance training sessions [9].…”

Section: Introductionmentioning

confidence: 99%

Validity and Reliability of the Isometric Prone Bench Pull Test

Lum

Aziz

2020

Int J Sports Med

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AbstractIsometric strength tests are gaining popularity in recent years. However, no study has validated any isometric strength tests to assess upper body pulling ability. The aim of this study was to investigate the validity and reliability of isometric prone bench pull. Twenty-three resistance trained athletes (age: 26±4 years, height: 1.75±0.07 m, body mass: 78.6±11.5 kg) were required to perform prone bench pull 1 repetition maximum and isometric prone bench pull tests during the familiarization and actual testing sessions. Isometric prone bench pull was performed at 90° and 120° elbow angles. Peak force and rate of force development measures were highly reliable with intra-correlation coefficient between 0.881–0.987. Peak force obtained from isometric prone bench pull at both elbow angles showed large correlations to prone bench pull 1 repetition maximum (r=0.833–0.858, p<0.01). Linear regression equations to predict 1RM performance from isometric prone bench pull peak force produced an estimated 1RM with a standard error of only 3–6% of the average prone bench pull 1 repetition maximum. The current findings show that isometric prone bench pull is a reliable test and can be used to predict prone bench pull performance.

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Validation and Reliability of a Novel Test of Upper Body Isometric Strength

Cited by 15 publications

References 15 publications

Upper-Body Strength Measures and Pop-Up Performance of Stronger and Weaker Surfers

Upper-Body Strength Measures and Pop-Up Performance of Stronger and Weaker Surfers

The effect of 6 days of alpha glycerylphosphorylcholine on isometric strength

Validity and Reliability of the Isometric Prone Bench Pull Test

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