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Hydraulic Hand Dynamometer Instruction Manual 12-0240 Standard 12-0241 LiTE™ 12-0221 HD™ 12-0243 Hi-Res™ 12-0246 ER™ 12-0247 Digital
Standard Hydraulic Hand Dynamometer (12-0240)
FABRICATION ENTERPRISES INC.
Manufacturer and Master Distributor of Physical Therapy and Rehabilitation Products ver 1121
Parts/Specifications Reset Knob Maximum Output Indicator
Zero Adjustment Pin
Indicator Needle
5 Level Adjustment
Handle Clamp
Specifications Grip adjust range Weight
200 lb / 90 kg capacity 1.35 in / 3.35 cm 22.6 oz / 638 gm
Hydraulic Hand Dynamometer Usage Set handle to comfortable grip for patient. Reset max indicator to zero. Have patient squeeze with maximum force, note reading. Reset to zero for next test. Calibration The Baseline® Hydraulic Hand Dynamometer is a sealed unit and calibrated at the factory. However, if indicator needle is out of “zero-range” it may be reset. Remove the clear cover by turning counter clockwise. Adjustment pin located by 90 kg marking. Turn pin to reset to zero. If unit is leaking hydraulic fluid it should be returned to the factory for evaluation. Components • Machined aluminum handle, post and body • Bronze bellows • Stainless steel hydraulic tubing • Teflon bushings • Non-toxic mechanical hydraulic pump fluid • Gauge-Bourdon tube element with spring suspended movement. Constructed to ASME B 40.1 standards. Accuracy greater than 98%. Data The Baseline® Hydraulic Hand Dynamometer can utilize same of data pertaining to the Jamar® Hydraulic Hand Dynamometer. The internal workings of both are hydraulic and bellows-operated.
Norms for Adult Grip Strength A recent study by Dr. Virgil Mathiowetz indicates that “... individuals using the Baseline® dynamometer are justified in using the normative data collected with the Jamar® dynamometer...” For each test of grip strength, the subject was seated with shoulder adducted and neutrally rotated with the elbow between 0˚ and 15˚ ulnar deviation. The standard test protocol used the mean of three strength tests as a resultant score. A score was taken with both the dominant (right) and non-dominant (left) hands. The rest results show a relationship between: • hand strength vs. age • hand strength of men vs. hand strength of women • dominant hand strength vs. non-dominant hand strength Average Performance of all Subjects on Grip Strength (pounds)- Test results Men
Women
Mean
SD
SE
Low
High
Age
Hand
Mean
SD
SE
Low
High
121.0 104.5
20.6 21.8
3.8 4.0
91 71
167 150
20-24
R L
70.4 61.0
14.5 13.1
2.8 2.6
46 33
95 88
120.8 110.5
23.0 16.2
4.4 4.4
78 77
158 139
25-29
R L
74.5 63.5
13.9 12.2
2.7 2.4
48 48
97 97
121.8 110.4
22.4 21.7
4.3 4.2
70 64
170 145
30-34
R L
78.7 68.0
19.2 17.7
3.8 3.5
46 36
137 115
119.7 112.9
24.0 21.7
4.8 4.2
76 73
176 157
35-39
R L
74.1 66.3
10.8 11.7
2.2 2.3
50 49
99 91
116.8 112.8
20.7 18.7
4.1 3.7
84 73
165 157
40-44
R L
70.4 62.3
13.5 13.8
2.4 2.5
38 35
103 94
109.9 100.8
23.0 22.8
4.3 4.3
65 58
155 160
45-49
R L
62.2 56.0
15.1 12.7
3.0 2.1
39 37
100 83
113.6 101.9
18.1 17.0
3.6 3.4
79 70
151 143
50-54
R L
65.8 57.3
11.6 10.7
2.3 2.1
38 35
87 76
101.1 83.2
26.7 23.4
5.8 5.1
59 43
154 128
55-59
R L
57.3 47.3
12.5 11.9
2.5 2.4
33 31
86 76
89.7 76.8
20.4 20.3
4.2 4.1
51 27
137 116
60-64
R L
55.1 45.7
10.1 10.1
2.0 2.0
37 29
77 66
91.1 76.8
20.6 19.8
4.0 3.8
56 43
131 117
65-69
R L
49.6 41.0
9.7 8.2
1.8 1.5
35 29
74 63
75.3 64.8
21.5 18.1
4.2 3.7
32 32
108 93
70-74
R L
49.6 41.5
11.7 10.2
2.2 1.9
33 23
78 67
65.7 55.0
21.0 17.0
4.2 3.4
40 31
135 119
75+
R L
42.6 37.6
11.0 8.9
2.2 1.7
25 24
65 61
104.3 93.1
28.3 27.6
1.6 1.6
32 27
176 160
All Subjects
R L
62.8 53.9
17.0 15.7
0.96 0.88
25 23
137 115
References:
1.Gill D., Reddon J., Renney C., Stefanyk W.: Hand Dynamometer: Effects of Trials and Sessions. Perpetual and Motor Skills 61: 195-8, 1985. 2. Everett P., Sills F.: The relationship of Grip Strength to Stature, Somatotype Components, and Anthropometric Measurements of the Hand. The Research Quarterly 23: 161-6, 1952 3. Mathiowetz V., Federman S., Wiermer D.: Grip and Pinch Strength: Norms for 6 to 19 Year Olds. The American Journal of Occupational Therapy 40: 705-11, 1986 4. Mathiowetz V., Donahoe L., Renells C.: Effect of Elbow Position on Grip and Key Pinch Strength. The Journal of Hand Surgery 10A: 694-7, 1985 5. Mathiowetz V., Kashman N., Volland G., Weber K., Dove M., Rogers S.: Grip and Pinch Strength: Normative Data for Adults. Archives of Physical Medicine and Rehabilitation 66: 69-74, 1985.
Grip Strength (Dominant Hand) Women
125
re
121.0
120.8
121.8
119.7
Men 116.8 109.9
113.6
Grip Strength (Pounds)
100
104.3
101.1 89.7
91.1
78.7
75
74.5
70.4
74.1
75.3
70.4 62.2
65.7
65.8 57.3
50
62.8
55.1 49.6
49.6 42.6
25
0 20-24
25-29
30-34
35-39
40-44
45-49
50-54
55-59
60-64
65-69
70-74
75+
All Ages
Age
Grip Strength Difference Between Dominant and Non-Dominant Hand
20
12
dominant score - non-dominate score
18 17
Men
dominate score
17
17 16
15
15 14
Percentage Differece
%=
14
14
16
16 14
14
13 12
12
11
10
10
10 9
10
11
10
9 8
Grip Strength (Pounds)
Women
7
5
6
5
2
3
0 20-24
25-29
30-34
35-39
40-44
45-49
50-54
55-59
60-64
65-69
70-74
75+
All Ages
Age * charts generated from data published in Mathiowetz’s article “Grip and Pinch Strength: Normative Data for Adults”, Archives of Physical Medicine and Rehabilitation 66: 69-74, 1985
0
Hydraulic Hand Dynamometer WARRANTY The Baseline® Hydraulic Hand Dynamometer is warranted for parts and labor from date of purchase. If unit needs repair, contact your local dealer or Fabrication Enterprises, Inc. Fabrication Enterprises, Inc. 3 Westchester Plaza Suite 111 Elmsford, NY 10523 Tel: 800-431-2830, 914-345-9300
12-0241
LiTE™ Hydraulic Hand Dynamometer
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12-0243
Hi-Res™ Hydraulic Hand Dynamometer
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ER™ Hydraulic Hand Dynamometer
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12-0221
Standard Hydraulic Hand Dynamometer
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HD™ Hydraulic Hand Dynamometer
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12-0247
Digital Hydraulic Hand Dynamometer
the most complete line of instruments for the physical therapist
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Want more information? Find these and many more products at www.FabEnt.com Fabrication Enterprises Inc. 250 Clearbrook Rd, Suite 240 Elmsford, NY 10523 (USA) tel: +1-914-345-9300 • 800-431-2830 fax: +1-914-345-9800 • 800-634-5370 FabEnt.com
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Baseline® is a registered trademark of Goldberg.