Short physical performance battery for middle-aged and older adult cardiovascular disease patients: implication for strength tests and lower extremity morphological evaluation.
Tomohiro Yasuda, Kazuya Fukumura, Toshiaki Nakajima
PMID 28533623WHAT IT FOUND
Inpatients with cardiovascular disease scored lower on the Short Physical Performance Battery than outpatients and healthy adults, especially on chair stands.
Lower scores went with weaker knee extension and thinner thigh muscles.
Key findings
01Total SPPB scores averaged 9.0 of 12 in inpatients with cardiovascular disease, 11.2 in outpatients and 12.0 in healthy controls.
02Inpatients had lower knee extension strength (19.7 kg) and anterior mid-thigh muscle thickness (3.13 cm) than outpatients (34.9 kg, 4.28 cm) and healthy controls (37.4 kg, 4.34 cm).
03Knee extension and anterior mid-thigh muscle thickness were selected in the regression equation for total SPPB scores (R2=0.630, p<0.05).
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
Thirty-six participants were studied in three small groups, so the findings are narrow. Only 2 inpatients had total SPPB scores of 4-6 and none had 0-3, so the study says little about people with very poor mobility. The authors could not always measure function and muscle morphology during the same hospital admission for inpatients or the same hospital visit for outpatients, so timing of assessments was not uniform. The study compared groups and correlations; it did not test a treatment, so it cannot show that weakness caused low SPPB scores or that training would change them.
Declared interests
The authors have no conflicts of interest to declare.
The easy way to misread this
Do not conclude that knee extension weakness causes low SPPB scores or that strengthening the knee will raise SPPB. The study compared 36 people and used correlations and regression, not a treatment trial.