Healthy Aging
Conditions
Keywords
maximum strength, one repetition maximum, repetitions to fatigue, prediction equation, resistance exercise
Brief summary
Resistance exercise training (RT) is a key component of health related exercise programs. However, an accurate specification of RT load prescription is essential for effective and safe achievement of training aims. Proper specification of exercise intensity might be the most critical issue when designing RT protocols for adults. One repetition maximum tests (1RM) have been considered the "gold standard" of dynamic maximum strength evaluation. Although the argument of increased risk of injuries and adverse effects with 1RM testing in older people has been rejected by several studies , limited motivation to lift maximum loads, requirement for high test effort, time constraints, and interruption of the continuity of the training process aggravate the frequent application of 1RM tests particularly in non-athletic RT. 1RM prediction equations that use the load and number of repetitions completed to fatigue (RTF) to predict repetition maximum might be a reliable and feasible option to 1RM testing. Thus, the primary aims of this study were to evaluate the predictive accuracy of current RTF equations and to develop an equation that more accurately predicts 1RM from RTF tests.
Interventions
OTHERresistance exercise tests
One 1RM and three RTF tests (5-8RM, 9-12RM, 13-16RM) on seven resistance training devices
Sponsors
University of Erlangen-Nürnberg Medical School
Study design
Observational model
COHORT
Time perspective
CROSS_SECTIONAL
Eligibility
Sex/Gender
ALL
Age
18 Years to 85 Years
Healthy volunteers
No
Inclusion criteria
* 18 to 35 years old * 60 to 85 years old
Exclusion criteria
* Contraindication for one repetition maximum tests * musculoskeletal injuries that may prevent a reliable and safe assessment of the 1RM and RTF tests
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Maximum load, one repetition maximum, leg press | At baseline - no follow up tests | Maximum load lifted once (1RM, in kg) for the leg press exercise |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Maximum load lifted at 13-16 RM, trunk flexion | At baseline - no follow up tests | Maximum load lifted 13-16 times (RFT13-16, in kg) for the trunk flexion exercise |
| Maximum load lifted at 5-8RM, leg press | At baseline - no follow up tests | Maximum load lifted 5-8 times (RFT5-8, in kg) for the leg press exercise |
| Maximum load lifted at 9-12RM, leg press | At baseline - no follow up tests | Maximum load lifted 5-8 times (RFT9-12, in kg) for the leg press exercise |
| Maximum load lifted at 13-16 RM, leg press | At baseline - no follow up tests | Maximum load lifted 5-8 times (RFT13-16, in kg) for the leg press exercise |
| Maximum load, one repetition maximum, lat pulls | At baseline - no follow up tests | Maximum load lifted once (1RM, in kg) for the latissimus pull exercise |
| Maximum load lifted at 5-8 RM, lat pulls | At baseline - no follow up tests | Maximum load lifted 5-8 times (RFT5-8, in kg) for the latissimus pull exercise |
| Maximum load lifted at 9-12 RM, lat pulls | At baseline - no follow up tests | Maximum load lifted 9-12 times (RFT9-12, in kg) for the latissimus pull exercise |
| Maximum load lifted at 13-16 RM, lat pulls | At baseline - no follow up tests | Maximum load lifted 13-16 times (RFT13-16, in kg) for the latissimus pull exercise |
| Maximum load, one repetition maximum, triceps dips | At baseline - no follow up tests | Maximum load lifted once (1RM, in kg) for the triceps dips exercise |
| Maximum load lifted at 5-8 RM, triceps dips | At baseline - no follow up tests | Maximum load lifted 5-8 times (RFT5-8, in kg) for the triceps dips exercise |
| Maximum load lifted at 9-12 RM, triceps dips | At baseline - no follow up tests | Maximum load lifted 9-12 times (RFT9-12, in kg) for the triceps dips exercise |
| Maximum load lifted at 13-16 RM, triceps dips | At baseline - no follow up tests | Maximum load lifted 13-16 times (RFT13-16, in kg) for the triceps dips exercise |
| Maximum load, one repetition maximum, trunk extension | At baseline - no follow up tests | Maximum load lifted once (1RM, in kg) for the trunk extension exercise |
| Maximum load lifted at 5-8 RM, trunk extension | At baseline - no follow up tests | Maximum load lifted 5-8 times (RFT5-8, in kg) for the trunk extension exercise |
| Maximum load lifted at 9-12 RM, trunk extension | At baseline - no follow up tests | Maximum load lifted 9-12 times (RFT9-12, in kg) for the trunk extension exercise |
| Maximum load lifted at 13-16 RM, trunk extension | At baseline - no follow up tests | Maximum load lifted 13-16 times (RFT13-16, in kg) for the trunk extension exercise |
| Maximum load, one repetition maximum, trunk flexion | At baseline - no follow up tests | Maximum load lifted once (1RM, in kg) for the trunk flexion exercise |
| Maximum load lifted at 5-8 RM, trunk flexion | At baseline - no follow up tests | Maximum load lifted 5-8 times (RFT5-8, in kg) for the trunk flexion exercise |
| Maximum load lifted at 9-12 RM, trunk flexion | At baseline - no follow up tests | Maximum load lifted 9-12 times (RFT9-12, in kg) for the trunk flexion exercise |
| Maximum load lifted at 5-8 RM, leg flexion | At baseline - no follow up tests | Maximum load lifted 5-8 times (RFT5-8, in kg) for the leg flexion exercise |
| Maximum load lifted at 9-12 RM, leg flexion | At baseline - no follow up tests | Maximum load lifted 9-12 times (RFT9-12, in kg) for the leg flexion exercise |
| Maximum load lifted at 13-16 RM, leg flexion | At baseline - no follow up tests | Maximum load lifted 13-16 times (RFT13-16, in kg) for the leg flexion exercise |
| Maximum load, one repetition maximum, leg extension | At baseline - no follow up tests | Maximum load lifted once (1RM, in kg) for the leg extension exercise |
| Maximum load lifted at 5-8 RM, leg extension | At baseline - no follow up tests | Maximum load lifted 5-8 times (RFT5-8, in kg) for the leg extension exercise |
| Maximum load lifted at 9-12 RM, leg extension | At baseline - no follow up tests | Maximum load lifted 9-12 times (RFT9-12, in kg) for the leg extension exercise |
| Maximum load, one repetition maximum, leg flexion | At baseline - no follow up tests | Maximum load lifted once (1RM, in kg) for the leg flexion exercise |
| Maximum load lifted at 13-16 RM, leg extension | At baseline - no follow up tests | Maximum load lifted 13-16 times (RFT13-16, in kg) for the leg extension exercise |
Countries
Germany
Outcome results
None listed