Participants’ height was measured while shoeless using a wall-mounted stadiometer and weight was measured with the participant in light clothing, shoeless using a daily calibrated standard scale. Body mass index (BMI) was calculated as weight (kg)/height (m)2. Physical performance was assessed by handgrip strength, chair stand time, and functional reach. Grip strength was evaluated as an index of muscle strength in the upper limbs and was measured using a hydraulic hand dynamometer (Jamar hydraulic hand dynamometer; Lafayette Instrument Company, Inc., Lafayette, IN, US). Chair stand time was evaluated as an index of muscle strength in the lower limbs. It was quantified as the time taken to stand up from a standard chair and sit down five times, without the assistance of their arms. Functional reach was evaluated as an index of balance and was quantified as the difference between the initial point (standing comfortably upright, facing forward, hand in a fist, with the arm extended) and the reaching point (reaching forward as far as possible) without stepping or losing balance. All physical performance measures were performed twice and their excellent values were analyzed. When the test was conducted only once, the value was adopted.
Jamar hydraulic hand dynamometer
Manufactured by Lafayette Instrument
Sourced in United States
The Jamar hydraulic hand dynamometer is a device used to measure grip strength. It features a hydraulic mechanism that converts the force applied to the device into a numerical reading, providing an objective measurement of the user's hand grip strength.
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Lab products found in correlation
17 protocols using jamar hydraulic hand dynamometer
1
Comprehensive Physical Performance Assessment
2
Standardized Handgrip Strength Assessment
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A JAMAR hydraulic hand dynamometer (Lafayette Instruments, Lafayette, IN, USA) was used to assess dominant handgrip strength. Participants were asked to sit upright in a stable, unarmed, four-legged chair with thighs horizontal and knees at 90°. The dominant hand was selected. Participants kept their flexed elbow tight to the waist, upper arm vertical, lower arm horizontal, and the other arm relaxed. The device was squeezed as hard as possible on setting #2 [38 (link)] and then released. The average value of 3 repeats was recorded [18 (link)]. Muscle strength data were collected by 3 observers, and their reliabilities have been published previously (CCCs ranging from 0.64 for inter-rater to 0.94 for intra-rater reliability [7 (link)]).
3
Assessing Grip Strength in Older Adults
4
Grip Strength and Gait Speed Measurement
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Grip strength (kg) was measured with the Jamar hydraulic hand dynamometer (Lafayette Instruments, Lafayette, IN). Two trials of isometric grip strength were obtained bilaterally and averaged to yield grip strength. Gait speed (m/s) was based on the self-paced time to walk eight feet [8 (link)].
5
Grip Strength and Gait Speed Assessment
6
Comprehensive Physical Frailty Assessment
7
Measuring Hand Grip Strength for Muscle Function
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The maximum grip strength of the hand is a good indication of the muscle function [1 (link),4 (link)]. The muscle strength was evaluated by measuring the HS with the JAMAR hydraulic hand dynamometer (Lafayette Instruments, Lafayette, IN, USA). Patients were asked to sit on a comfortable chair with form armrests on which. The elbow of the patient was flexed at 90° and they were asked to squeeze the force meter with their preferred hand for approximately 2 s. Two measurements per patient were done. After each measurement the pointer of the meter was turned to zero and the best value was record. The HS was measured preoperatively, 3 months and 6 months postoperatively. Table 1 gives an overview of HS meter references in kilogram-force (kgf) [9 (link)].
8
Assessing Hand Grip Strength Measurement
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To assess the HGS of the subjects, we used a Jamar hydraulic hand dynamometer (Lafayette Instrument Company, Lafayette, IN, USA). The measurement process followed the method suggested in a previous study [15 (link)], as shown in Figure 2 a. Subjects were asked to sit on an armchair with their elbow flexed at 90°, without touching the chair arms. The Jamar is a variable hand-span dynamometer with five handle positions. The dynamometer was set to handle position “two”, and both hands were measured three times with subjects exerting their best effort. To determine the representative HGS of each subject, we calculated the mean value of the six measurements. This mean value served as the reference value for HGS in this study.
9
Comprehensive Health Assessment Protocol
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Height (m) and weight (kg) were measured while wearing light clothing and without shoes, and body mass index (BMI) was calculated as weight/height squared (kg/m2). Grip strength was evaluated as an index of muscle strength in the upper limbs and was measured using a hydraulic hand dynamometer (Jamar hydraulic hand dynamometer; Lafayette Instrument Company, Inc., Lafayette, IN, US). Grip strength was measured twice and their excellent values were analyzed. Trained interviewers obtained information regarding the clinical characteristics of the participants. Comorbidity data, including heart disease, lung disease, stroke, and diabetes mellitus, were also collected. Data on current smoking (yes/no), alcohol consumption (≥ 20 g/day), and exercise (at least 30 min twice per week) were collected through interviews.
10
Stroke Functional Outcome Evaluation
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Clinical outcome measures were taken before the first day of the intervention,
immediately after the final day of the intervention, and six months later. The
Fugl-Meyer is a validated and reliable evaluation instrument used for measuring
performance-based impairment in stroke patients (Dong et al., 2013 (link);Gladstone et al.,
2002 ; Malouin et al., 1994 (link)). The
Wolf Motor Function Test assesses upper extremity function by asking the participant
to complete 15 motor-based tasks and 2 strength-based tasks (Morris et al., 2001 (link)). Grip strength was assessed using a Jamar
hydraulic hand dynamometer (Lafayette Instrument, Lafayette, IN). The average of
three trials was computed.
immediately after the final day of the intervention, and six months later. The
Fugl-Meyer is a validated and reliable evaluation instrument used for measuring
performance-based impairment in stroke patients (Dong et al., 2013 (link);
2002
Wolf Motor Function Test assesses upper extremity function by asking the participant
to complete 15 motor-based tasks and 2 strength-based tasks (Morris et al., 2001 (link)). Grip strength was assessed using a Jamar
hydraulic hand dynamometer (Lafayette Instrument, Lafayette, IN). The average of
three trials was computed.
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