14 zero the readings for the hand dynamometer a hold

14. Zero the readings for the Hand Dynamometer.
a. Hold the Hand Dynamometer along the sides, in an upright position. Do not put any force
on the gray pads of the Hand Dynamometer.
b. When the readings stabilize, choose Zero from the Sensors menu. The readings for the
sensor should be close to zero.
15. Start data collection. Instruct the subject to immediately pinch the end of the sensor between
the pads of the thumb and forefinger of his or her dominant hand, and hold for 5 seconds.
16. Instruct the subject to switch to successive fingers every 5 seconds. Data collection will stop
after 20 seconds.
17. Determine the mean force applied during each pinch.
a. Tap and drag across the first plateau on the graph, to select the data representing the pinch
strength of the thumb and index finger (see Figure 4).
b. Choose Statistics from the Analyze menu and record the mean pinch strength to the
nearest 0.1 N in Table 5.
c. Choose Statistics from the Analyze menu to turn off statistics.
d. Select the data in the second plateau, representing the pinch strength of the thumb and
middle finger. Choose Statistics from the Analyze menu.
e. Record the mean pinch strength to the nearest 0.1 N in Table 5.
f. Choose Statistics from the Analyze menu to turn off statistics.
g. Repeat this process to obtain statistics for the remaining two pinch strengths..
Figure 3
Figure 4

16 - 4
Human Physiology with Vernier
LabQuest 16
DATA
Table 1−Individual Grip Strength Data
Maximum force (N) Mean force (N)
Right hand grip strength 192.6 178.1
Left hand grip strength 186.9 169.3
Table 2−Class Grip Strength Data
Average mean force (N)
Males (dominant hand grip strength) 219.67
Females (dominant hand grip strength) 118.90
Table 3−Class Grip Strength Data
Average mean force (N)
Right hand Left hand
Right-handed individuals 115.9 102.28
Left-handed individuals 138.83 141.16
Table 4−Class Grip Strength Data
Height (rounded to nearest inch)
Average mean grip strength of dominant hand
(N)
1.52 m (5’) or below 83.73
1.55−1.63 m (5’1”−5’4”) 117.57
1.65–1.73 m (5’5”−5’8”) 173.78
1.75–1.83 m (5’9”−6’) 210.6
1.85 m (6’1”) and above 264.25

Human Physiology with Vernier
16 - 5
Grip Strength Comparison
Table 5−Individual Pinch Strength Data
Mean force (N)
Dominant hand index finger 50.8
Dominant hand middle finger 63.1
Dominant hand ring finger 54.0
Dominant hand little finger 29.8
DATA ANALYSIS