GRIP: Maximum Isometric Grip Strength Assessed With Three Different Hand-held Dynamometers

NCT05594888 | Completed DMC

• 1 other identifier: BASEC-Nr.:2022-01400
• Study Type: observational
• Target: 520
• Locations: 1 country
• Sites: 1

Brief Summary

Maximum isometric grip strength (MIGS) is a cost-effective, easily accessible, valid and reliable outcome measure for assessing upper body strength in both, adults and children. The the JAMAR Hydraulic Hand Dynamometer is the current gold standard for measuring MIGS. For certain age- and activity-groups, alternative devices may be more appropriate. To date, the quality criteria (test-retest-reliability and validity) of the JAMAR Smart Hand Dynamometer and the Martin Vigorimeter compared to the current gold standard are not yet investigated. Furthermore, no reference values for different age-, sex-, or activity level groups exist with regard to underlying disease entities for these three devices.

Conditions

Grip

Keywords

Maximum isometric grip strength; Hand-held dynamometer; Reference values; Physical therapy

Outcome Measures

Primary Outcomes (4)

• PART 1: Quality criteria: Intrasubject reliability

  Test-retest reliability of the JAMAR© Smart Dynamometer, the JAMAR© Hydraulic Dynamometer and Martin Vigorimeter measuring MIGS will be assessed by intrasubject realiability. --\> 5 attempts per device and dominant/adominant hand will be measured.

  5 minutes

• PART 1: Quality criteria: Intersession reliability

  Test-retest reliability of the JAMAR© Smart Dynamometer, the JAMAR© Hydraulic Dynamometer and Martin Vigorimeter measuring MIGS will be assessed by intersession realiability. --\> 5 attempts per device and dominant/adominant hand at two different days will be measured.

  5 minutes

• PART 1: Quality criteria: Validity

  Validity of the JAMAR© Smart Dynamometer, the JAMAR© Hydraulic Dynamometer and Martin Vigorimeter measuring MIGS will be assessed by plotting the differences in grip force measurements of the 3 measurement devices against their means, with ± 1.96 SD as cut-off values (limits of agreement). --\> 5 attempts per device and dominant/adominant hand will be measured.

  5 minutes

• PART 2: Comparability of MIGS measurement

  Evaluation of comparability of MIGS measurement assessed with the JAMAR© Smart Dynamometer, the JAMAR© Hydraulic Dynamometer and the Martin Vigorimeter -\> Best out of 3 attempts per device and dominant/adominant hand

  10 minutes

Secondary Outcomes (13)

• PART 2: Age-specific refence values - JAMAR© Hydraulic

  1 minute

• PART 2: Age-specific refence values - JAMAR© Smart

  1 minute

• PART 2: Age-specific refence values - Martin Vigorimeter

  1 minute

• PART 2: Sex-specific refence values - JAMAR© Hydraulic

  0.5 minute

• PART 2: Sex-specific refence values - JAMAR© Smart

  0.5 minute

Study Arms (3)

PART 1- Group A

Male and female volunteers (age 18-64 years) working at University Hospital Balgrist. Assessment of validity and intrasubject reliability of maximum isometric grip strength assessed with: * JAMAR© Smart Dynamometer \[kg\] * JAMAR© Hydraulic Dynamometer \[kg\] * Martin Vigorimeter \[kPa\]

PART 1 - Group B

Male and female volunteers (age 18-64 years) working at University Hospital Balgrist. Assessment of validity and intrasubject reliability and assessment of intersession reliability of maximum isometric grip strength assessed with: * JAMAR© Smart Dynamometer \[kg\] * JAMAR© Hydraulic Dynamometer \[kg\] * Martin Vigorimeter \[kPa\]

PART 2

Male and female volunteers (age ≥ 10 years). Maximum isometric grip strength is assessed (no intervention): * JAMAR© Smart Dynamometer \[kg\] * JAMAR© Hydraulic Dynamometer \[kg\] * Martin Vigorimeter \[KPa\]

Eligibility Criteria

• Age: 10 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64), Older Adult (65+)
• Sampling Method: Probability Sample

Study Population

Part 1: * Male and female volunteers (age 18-64 years) working at University Hospital Balgrist. * 40 participants: to exclude possible sex aspects, ratio ♀: ♂ = 1:1 Part 2: * Male and female volunteers (age ≥ 10 years). MIGS is used as a health indicator throughout different age- and sex groups. * 20 participants per age-group and sex with a total of 520 subjects are planned

You may qualify if:

• Male and female volunteers with age 18-64 years
• Body mass index \< 30 kg/m2
• Informed consent signed
• Male and female volunteers with age ≥ 10 years
• Informed consent signed (if age \< 14 years, signed by parents or legal guardians)

You may not qualify if:

• Disease or injury (e.g., musculoskeletal or neurological) that could affect upper extremity strength
• Physical impairment of the upper extremity (visible swelling or the presence of a splint or cast)
• Acute pain or infection
• Cognitive impairment (inability to understand and/or follow directions)
• Insufficient language of the German language

Sponsors & Collaborators

• Johannes Scherr: lead

Study Sites (1)

University Hospital Balgrist

Zurich, Canton of Zurich, 8008, Switzerland

Location

Study Officials

• Johannes Scherr, Prof Dr med

  Balgrist University Hospital

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: observational
• Observational Model: OTHER
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: SPONSOR INVESTIGATOR
• PI Title: Prof. Dr. med. Johannes Scherr

Study Record Dates

• First Submitted: October 2, 2022
• First Posted: October 26, 2022
• Study Start: November 17, 2022
• Primary Completion: January 31, 2025
• Study Completion: January 31, 2025
• Last Updated: February 11, 2025

Record last verified: 2025-02

Locations

CH (1)