KNGF Guideline Cardiac rehabilitation

KNGF Clinical Practice Guideline for physical therapy in patients undergoing cardiac rehabilitation
Supplements
Supplement 5 Protocol for test to estimate 1RM from 10RM (or more) in patients with
chronic heart failure
RM = repetition maximum.
Protocol
1. Select an exercise.
2. Do a warm-up.
3. Practice the correct technical execution of the exercise.
4. Select a starting weight, have the patient do as many repetitions as possible, while maintaining correct technique if possible.
The starting weight (in kg) is called Y.
(Note: Make sure the starting weight is not too high, to enable the patient to complete at least 10 repetitions. Ensure sufficient
warming-up.)
5. Look up the corresponding percentage in the table below. There are several options, as a result of overlap between the numbers of
repetitions. This percentage is called Z.
6. Calculate the 1RM using the following equation:
1RM = 100/Z × Y
Y = starting weight in kg
Z = the percentage found in the table.
7. Remember that this is an estimated value.
Number of repetitions for a particular load percentage
Load Percentage (%RM)
Number of repetitions
100 1
95 2 - 3
90 3 - 4
85 4 - 6
80 6 - 9
75 7 - 11
70 9 - 15
65 12 - 18
60 16 - 22
55 20 - 25
45 30 - 26
40 34 - 40
Note: The 1RM is never determined directly in people with a chronic disease or older people, as the risk of injury is too high. 1
Instead, the 1RM can be derived from the 10RM. The 10RM can be safely determined using the above protocol. 2
References
1. Pollock ML, Gaesser GA, Butcher JD, Després JP, Dishman RK, Franklin BA, Garber CE. American College of Sports Medicine Position Stand. The Recommended
Quantity and Quality of Exercise for Developing and Maintaining Cardiorespiratory and Muscular Fitness, and Flexibility in Healthy Adults. ACSM; 1998.
2. Jongert MWA, Koers H, Oudhof J. Poliklinisch beweegprogramma hartfalen. HIB, NVFH, TNO PG; 2004. (in Dutch)
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