17th Annual ECSS-Congress, Bruges 2012

Abstract details

Abstract-ID: 412
Session: [OP-PM36] Exercise training
Lecture room: Auditorium
Date & time: 04.07.2014 / 18:00 - 19:30
Title of the paper: DIFFERENT PARAMETERS FOR LOAD CONTROL DURING RESISTANCE TRAINING IN OLDER ADULTS: INTENSITY- VERSUS REPETITION-CONTROLLED
Authors: Morat, T., Luenzer, S., Mechling, H.
Institution: German Sport University Cologne
Department: Institute of Movement and Sport Gerontology
Country: Germany
Abstract text Introduction Older adults need sufficient strength to perform task of daily life, e.g. stair climbing, getting up from a chair (Brill et al., 2000). Within a training of muscular strength, objective (load intensity, number of repetitions) and subjective parameters (perceived exertion) are used to control resistance training (Froehlich et al., 2002). The aim of this study was to examine the implementation of different parameters of load control (intensity through percentage [%] of maximum strength [1RM]; number of repetitions; perceived exertion) during resistance training with older adults. Methods 14 (10 males, 4 females) older adults (mean age of 64.8 ± 3.1 years; mean body height of 176.3 ± 11.8 cm; mean body weight of 83.5 ± 13.5 kg) participated in this cross-sectional test-retest study and were measured in two sessions at an interval of one week with two different treatments in the exercise “seated bench press”. During the pretest (T1), participants executed 4 sets at 85% of their One-Repetition maximum (1RM) with constant load intensity (CInt), during the posttest (T2), 4 sets with 8 repetitions with a constant number of repetitions (CRep) were executed. Participants had to state their perceived exertion using the OMNI-RES scale (OR). Time-under-tension (TUT), physical work and OR were measured. At T1, the maximal number of repetitions (reps) and at T2, the maximum load and additional reps were recorded. Results Within CInt, means of reps reduced by about 49% (set 1: 10.3 ± 3.1; set 4: 5.0 ± 2.9 reps); in CRep the load was reduced by about 20% (set 1: 49.5 ± 13.4; set 4: 41.2 ± 10.9 kg). There was no significant difference with respect to executed reps and TUT between CInt and CRep, but between single sets (p<.001). In CInt means of OR showed a significant increase (p<.05). Physical work demonstrated a significantly (p<.05) higher amount within CRep. Discussion The older adults in this study reached a higher mean number of repetitions than younger adults in former studies (Froehlich et al., 2002; Hoeger et al., 1990), but showed a greater variability within single sets. The results lead to the assumption that repetition-controlled resistance training could result in provoking the desired hypertrophy effects in the form of adaptations in muscle mass. References Brill PA, Macera CA, Davis DR, Blair SN, Gordon N (2000). Med Sci Sports Exerc, 32, 412-416. Froehlich M, Schmidtbleicher D, Emrich E (2002). Deutsche Zeitschrift fuer Sportmedizin, 53, 79-83. Hoeger WWK, Hopkins DR, Barette SL, Hale DR (1990). Appl Sport Sci Research, 4, 47-54. Contact [t.morat@dshs-koeln.de]
Topic: Training and Testing
Keyword I: training control
Keyword II: exercise regimen
Keyword III: load standards